The Analogue Turbo Duo clone shipped in time for Christmas 2023. Are you happy with yours ?? Find firmware updates here.
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Messages - D-Lite

#1
Quote from: rag-time4 on 12/20/2007, 01:43 PM
Quote from: turbo D on 12/19/2007, 06:04 PMSo I found this thing on ebay, haha. It seems to be a beefy memory base 128. What do you dudes know about it? Here is a link to the one I saw:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=290171712664&ssPageName=STRK:MEWA:IT&ih=019
I actually asked this seller to find me one of these a few months ago, and he said he'd check his "warehouse"

I don't know if he found it specifically for me or not, but the fact I asked for it may have something to do with the price.

Quote from: D-Lite on 12/19/2007, 06:56 PMHoly crap, $70 for that?  Then I have about $700 worth of those.  Anyone needs one let me know.  Cheap.
Dean, actually I've wanted one of these for quite some time.

I saw you also have Nobunaga-no Yabou Zenkokuban on your big sale list, but without a spine card. Toshi of DreamStarsJapan told me that originally the save-kun unit was available with Nobunaga Zenkokuban....

I've noticed that the spine card for my Nobunaga no Yabou: Bushou Fuuunroku has no barcode on it, so that may have been sold with save kun as well.

Nobunaga-flap-303559_top.webp

Anyway, I'm interested. How much do you want for a save kun? (I want the koei save kun and not a NEC mb-128, as I'm a Koei geek)
I'll get back to you tonight on that.  We're talking like $10-15 shipped I think.  Just need to check on it.
#2
Off-Topic / Re: best Rootbeer poll!
12/17/2007, 08:02 PM
Quote from: ceti alpha on 12/17/2007, 05:48 PM
QuoteI know that they can't have a big chunk of ham floating in it like the inferior brands do.
mmmm....pork cola...... =P~
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Seriously, am I the only Primus fan here?
#3
Lot of stuff to sell here.  This thread has no games, that's my other thread. 

If you have questions on any of this stuff, ask here or by e-mail at dean@multimods.com and I'll answer as soon as I can.
Same rules apply as other thread:
- PayPal accepted, money orders are fine too, international no problem
- Prices do include shipping only where indicated
- I prefer not to hold items.  Why?  Because it's already a major pain in the ass to keep an accurate inventory of what I have and what's sold.  And sometimes things on hold become things not sold
- Price matching:  I know it's possible that these prices may not be the absolute cheapest you can find and you're welcome to point me at a listing of a game (same condition and level of completeness please) and I'll try to at least match it Smile
- reach me at dean@multimods.com since PM's require me to get and e-mail and THEN check the PM box

Note all pictures are clickable for much larger versions.

OK, first modded gaming setups.
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Modded PC Engine Game systems
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Region and S-Video Modded Duo-R:  $275 shipped (priority)
My most popular set-up and still going with the lowered price I set a few months back.  The system plays both US and Japanese HuCards in addition to all CDs and SCDs.  It also is modded to output S-Video and includes a new 12 foot S-Video/Stereo audio cable (wrong cable in picture, sorry).  Comes with original AC adapter and DuoR controller.  System ships super well packed, as many can attest and is guaranteed for 90 days (including any shipping charges you may accrue).
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Region Modded PC Engine:  $55 shipped (priority)
The system plays both US and Japanese HuCards.  Comes with original PCE controller and 3rd party Rf and AC adapter.  Or if you already have a Nintendo AC adapter (NES or SNES should work) and Rf adapter, I'll knock $7 off the price.
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Region Modded CoreGrafxII with SuperCDRom2 setup:  $210 shipped (priority)
The system plays both US and Japanese HuCards and all CDs and SCDs.  Comes with original CoreGrafxII controller, original AV cable, and original AC adapter.  There are two pictured because I have two identical setups available.
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Region Modded SuperGrafx with SuperCDRom2 setup:  $260 shipped (priority)
The system plays both US and Japanese HuCards and all CDs and SCDs and also SuperGrafx games.  Comes with original PC Engine controller, original AV cable, and original AC adapter for SuperGrafx and new replacement AC adapter for the SCD2.  Also comes with Granzort to get you started on the SuperGrafx gaming. 
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Accessories
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Japanese Tap:  $5
Works with any japanese PCE type system.  Or the US Turbo Duo.

Tennokoe 2:  $7
Fits on back of the PCEngine or Core systems and gives you backup memory for your games.

Avenue 6 pad:  $12
Avenue 3 pad:  $10
Blaster pad:  $8
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System Cards and other HuCard accessories
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Arcade Card Duo:  $30 NEW, $22 Complete, $14 loose
Arcade Card Pro:  $50 NEW, $40 Complete
Tennokoe Bank:  $6 Complete, $4 loose
System Card 3.0 (japanese):  $18 Complete, $13 loose
System Card 2.1 (japanese):  $10 loose
System Card 1.0 (japanese):  $12 loose
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That's a big list.  Maybe eventually I'll add somethings like a couple of cordless pad setups, a complete and also loose RomRom Amp, and Print Booster....  Hmmmm :-k
#4
9/26/07 UPDATE:  I have finished a thorough guide for installing this PCB!  Please visit my website at www.multimods.com and click on the "New! PCE Region Modification" link on the left side of the page. 

First off, let me spend the top of this space thanking Ben Moran for designing and printing the first run of these PCBs months ago.
 =D> =D>
Although others had outlined the PCB method, he was the first I know to step up and get the damn things printed.  With that he opened the door for modding more system such as the CoreGrafx and Turbo Express due to the small size of the PCB.  And for that, as I mentioned previously, the "Moran 1.0" is still there on the PCB itself.  Thanks Ben, for designing this and allowing me to continue with the PCBs by sharing your layout.

OK, now the good stuff.

As the below picture shows, the new PCBs are identical except for the mask and screen now since I went with a production run of the boards.  Very nice quality and works great.  What these boards will do for you is allow you to switch the HuCard slot region on any NEC system.  Yes, ANY system, including Duo, DuoR, DuoRX, TG16, CoreGrafx I/II, PC Engine, Turbo Express, PC Engine GT, and SuperGrafx.  Even the LT?  Probably, but I'll let you do that.  Same for the LaserActive.  Note that with japanese systems you'll need to ground pin 29 on the processor, which if you're good enough to do the mod anyways, should be easy for you. 

Cost per board:  $15 +shipping ($4.60 for Priority mail, $1.50 for regular 1st class)
To install it, you'll need:
- SPDT switch (available readily at Radio Shack)
- wrapping wire (30 gauge stuff, also at the Shack)
- wire cutter, wire stripper
- drill and file for cutting and shaping the hole for the switch
- proper bit for opening whatever system you have

Oh, and I've decided to give back to Ben on this stuff.  Every board sold is $1 for Ben for just being a great member of the community. =D>

Sound daunting to do yourself?  Send me your system and I'll do it for $35 shipped for the small guys (PCE, Core, Core II), $40 for the bigger ones (Duo, SGx, etc).  I'm not yet doing the Turbo Express/GT mods myself yet due to a couple of factors, but probably in the future.

Best bet to reach me:  dean@multimods.com
I will be listing a ton of games later today/tomorrow and also some modded PCE/Core systems.  Stay tuned.

Now, here's a pic of the new board, next to the original board, next to an 8PDT switch that I still sometimes use:
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#5
Quote from: guest on 07/30/2007, 07:28 PM
Quote from: Keranu on 07/30/2007, 12:34 PM
Quote from: guest on 07/30/2007, 08:00 AM
Quote from: Keranu on 07/29/2007, 07:35 PMPersonally I prefer to avoid score numbers and such all together. A review is best "scored" from the text itself and adding a score number or something just seems to cause difficulty and contradictions with other game scores.
Thats why I put up a disclaimer/review guide explaining how to 'use' a review. Basically how the text is the real deal and the scores aren't to be used to pit games versus each other.
Hopefully it's a bold and noticeable disclaimer or else people are going to be like "OMG!" if you gave a game a 5/10 when really that just means it's completely average.
Seperate from the disclaimer(s), I also have a breakdown of what the scores generally mean. To me, even a game that earns a 4 overall isn't garbage.

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I love you.
#6
Quote from: Red Ghost on 07/04/2007, 08:14 PMJust trying to make sure I'm 100% with you here. Is the part circled in red the only part you're having issues with?  Or is it the whole spindle assembly or something else?
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Exactly that part.  Or should I say, that spindle and the shaft supporting it as a result.
#7
I'm outta damn space and need to move some stuff.  I have a metric shit ton of games here to move and this is the first blow.

First off, prices listed for the games are not including shipping and not including PayPal fees.  You may also pay by money order to avoid fees.  And realize that after like 10 games I can ship a good amount of stuff in a Priority mail flat rate box.  About the games, in many cases I have multiple games.  Please consider that the game shown is game plus manual and case (except in the loose HuCard case).  If it comes with a spine, reg card, etc, you'll find that out when you open it ;)  Condition is at least excellent and playable for all media and the manuals at least very good.

I won't even bother naming stuff for the games, just look at the pics and let me know what tickles your fancy.  Lots of $1 games here to be had kids.  Note that the pictures are clickable for much bigger resolution images. 
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Now for the systems. 

I have some region-modded (using grahf's IC board!) Core and CoreII systems up for grabs.  The systems will come with the proper matching controller, original AV and AC, and price includes Priority tracked shipping.  I want to just mention as well that the little PCB that grahf sells is top notch and works perfect in these little systems.
CoreGrafx:  $70 shipped
CoreGrafxII:  $75 shipped
NOTE:  included in the price listed:  Pick any 5 $1 games or 2 x $1 + 1 x $3 games FREE.  And shipping any other games you want is free and there is no PayPal (games fitting in the flat rate box with the system). 
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S-Video and Region Modded DuoR

I've made a couple systems (and have more available for modding) recently using my S-Video board and region mod.  All cleaned up and ready to go with blue power on LED in the little window.  Since it's been a while, I figured I'd lower the price for at least the time being.  Used to be $310 each shipped, but now $275 shipped Priority Mail with insurance and tracking.
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Questions, comments, PM or e-mail me at dean@multimods.com
#8
Even "broken" items should be packed moderately well at least.

Want to see a gem ?  I got this about a year ago and haven't even bothered to open it.  It looked really nice in the auction and I paid for priority/insured shipping.  You guys will love it:

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#9
Quote from: stevek666 on 01/30/2006, 02:33 PMIn fact, here is a working prototype that I own:
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This jumbo-sized HuCard (short for "Humungous Card"), would have been packaged in the same jewel cases, thankfully.

Apparently, NEC was considering a different name for this format (HuPancake comes to mind) before deciding to stick with the original term.
Holy crap that's cool.  I'm curious of where you got it, how you knows it's working, and if you'll sell it  8)
#10
Some sweet PC Engine and Turbo goods.

Prices include shipping within the US by Priority mail with insurance and delivery confirmation.  Other arrangements can be made.  I will ship outside the US.

I accept PayPal and would actually prefer money orders if possible.

Contact me by PM or (preferably) e-mail at dean@multimods.com

US Magical Chase NEW and SEALED!!!! $600
Yeah that's right.  New, nearly untouched.  You WON'T find a better Magical Chase.  The rarest US release for the system and a cool shooter to boot :)
Pics:
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US Bonk 3 HuCard $150
Beauty.  Excellent at least, all parts in beautiful shape.
Pics:
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Region and AV modded PC Engine DuoR $230
Nice system now setup to play both US and JP HuCards without any adapter.  Plays all US and JP CDs and SuperCDs too.  Comes with original AC and controller.  Will come with standard AV cables as well.
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NEW Turbo Express! $150
Brand new and boxed with untouched manual.  This unit has the sound fix by me and works beautifully.
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Boxed, Complete PC Engine SuperCDRom2 unit $175
Complete and in like new shape!  Styro is great, baggie intact, has the original AC and little connector for attaching to a PCE/CoreGrafx.
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#11
Yes, you read that right!!

Note that this is a fix for a SPECIFIC sound issue, but the big one.  For this to work you will need to PROPERLY identify the problem with your system.  There is more than one problem that can occur with Turbo Duo systems and I think this is going to work for many.

OK, the problem and diagnosis.  Here are typical issues with Duo systems:
1.  CD plays and loads fine, but all redbook audio (soundtrack, not sound effects) is dead.
2.  audio is scratchy and may fade in and out, but the CD games load and play no problem (well, except for sound, duh)
3.  CD play is sketchy and the drive sounds like it's struggling.  More than just a sound issue

This fix seems to work mainly for the #2 case and maybe for #1.  I need to test more systems though to be clear on what it works on.  It should work for both, but I won't commit to that without further study.

So, some of you may have seen my hypothesis about what the sound issue is due to and after struggling for a way to prove it, I've finally found a way to study it.  I blame the sound issue on overheating with the Duo model and have stated that the later DuoR and RX should be problem free due to placement of the audio components in relation to the heat sinks.  But how to study the problem when you need the CD drive running, yet the cover off?  The CD lid is required to keep the CD spinning.

At this point I'd like to take a moment to mourn the loss of a PC Engine Duo that gave it's life so others may live:
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https://www.multimods.com/images/Sales/R10x600.jpg

I cut the top up so I could test the components while running.  Don't worry, the unit itself was already dead anyways. 

OK, so, look at the area need the heat sinks:
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https://www.multimods.com/images/Sales/R9x600.jpg
In the yellow circle I highlight key components.  The 10 uF caps on the left and right are controlling the left and right channel pre and post amp.  The little 8-pin chip in the middle is an op-amp that is needed to process the sound.  After tapping around on these, I found that the POST op-amp caps are indeed the ones responsible for the sound level and the scratching you sometimes hear.  Sweet!  These come from an era in the early 90's when there was rumored to be a problem with capacitor production.  Dry cap likely.  This is the same issue as with the Turbo Express that I covered before.

So then I ripped the bastards out and soldered down a couple of brand new 10 uF, 50V caps:
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http://www.multimods.com/images/Sales/R12x600.jpg

Simple as hell and cheap, <$1 for the parts.  Of course you need a special screwdriver bit to even open the thing, but hey....

And that's that!  As said, I'm still working on what can and can't be repaired with this problem.  More details will come when I can figure that out too.

And as it turns out I am figuring out how to deal with problem #3, wonky CD drive performance.  Hallmark is the grinding, whining, whistling, stopping, grunting CD drive and game pausing, slow loading.  There are 5 little screws in the unit that directly effect the drive performance so hopefully that will be fruitful.

Major thanks to Saibot and monads for supplying Duo's to look at.  Hopefully I can fix theirs too.
#12
Quote from: "pcefreak"
Quote from: "D-Lite"NEW boxed PC Engine Duo Battery/Charger pack!

Unfamiliar with the Duo Battery?  Fits on the back of the unit, snapping into the slots on your Duo so it can be used on the road!  And this is the complete pack with the battery and charger (a separate battery-only pack was sold too).  The box may be worn, but the units are still sealed!  I'm not sure of the value (have an idea), so I'm taking offers on this really unusual item!
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http://www.multimods.com/images/Sales/DuoBatt1.jpg
http://www.multimods.com/images/Sales/DuoBatt2.jpg
http://www.multimods.com/images/Sales/DuoBatt3.jpg

Is this item still available?
Sorry I didn't see this post earlier.  Yep, it's been sold for a while now.
#13
OK, big new list here.  

Region modded SuperGrafx with SuperCDRom2 and Arcade Card Duo!!![/b]
The ULTIMATE PC Engine package!!  You can play ANY Turbo Grafx or PC Engine game with this setup!  All HuCards, all CDs, all SuperCDs, all ArcadeCDs, and all the SuperGrafx games!!  The SuperGrafx unit is complete with original AC, AV, controller, and both port covers and has a region modification switch on the front.  The SuperCDRom2 is fully tested and functional and in excellent cosmetic shape too!  Includes the original AC and the adapter cable (in pic) that plugs into a Core Grafx for power (not used with the SuperGrafx, you need the SGx plug for that, which as stated is included too).  And the Arcade Card Duo is HuCard only and works great!
Normally you'd pay about $325 for all that without any modification, but I'm selling if for $325 modded and shipped (priority, insured, tracked)!
Pic of setup (without accessories)

Samurai Spirits NGP Boxset![/b]
Looks new.  Box is excellent/NM easily and the game and system are NM.  Strap is unopened.  
$65 shipped priority, insured, tracked
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S-Video modded Genesis 3 systems (and one 50/60 Hz and JP/US modded)[/b]
4 systems available.  All have S-Video and RCA mounts added.  One has US/JP region mods.  Two have LEDs added.
Shipping prices are for priority, insured, tracked
System#1 With flush mounted violet LED - $60 System#1, pic 2
System#2 - $70
System#3 - $55
System#4 - $60
System#4, pic 2

Turbo Express Systems!![/b]
2 systems available.  These have had the sound repaired by myself and are otherwise brand new units!  The boxed one is beautiful with baggie and manual (still sealed with registration card) and styrofoam.  Box is torn a bit on the flap as shown.  $150 shipped for that one (priority, insured, tracked)
The other system is new as well and has the sound fixed too.  The volume adjustment works but in the repair process I had to remove and reattach it so if you push too hard you can accidently skip past the *end* point on it.  Doesn't affect how it works though.  Includes original baggie.  $100 shipped.
unboxed system, pic1
unboxed system, pic 2
Boxed sys, pic1
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Truly complete Boxed Bonk 3 HuCard![/b]
A true beauty and very rare.  This was my own from my collection, but recently upgraded to a sealed version myself.  So on the market!  This one is NM in everyway.  The HuCard is MINT, no insertion marks on it.  Manual, tray are NM/M.  The box is as good as it gets with the minor edge wear shown in the pics.  Looking to get $150 shipped.  Sold my other one on eBay for that before shipping and in less nice condition.
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Truly complete Boxed Soldier Blade HuCard![/b]
Another from my collection that I recently improved upon.  The HuCard is EX/NM and has typical insertion mark.  Graphics on front are NM.  Manual is great but has small dog earred corners only on the back (see pic).  The box is solid and EX/NM.  Has a crease on the side, but the front is sharp.  Shoot me an offer on this.
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PGM MoBo[/b]
Super clean and looks new.  No marks on the plastic at all and fires up perfectly.
$115 shipped priority, insured, tracked.
MoBo

PGM The Gladiator cart[/b]
Somehow, I ended up with two of these :spock:
Cart is in excellent shape as is the label, which is curling up on the ends as happens to all PGM carts eventually.  
Not sure on price as I got this a while ago, so shoot an offer.  I know how much is too little so don't feel free to lowball me or I'll have the roker kill you.
The Gladiator

A NEW boxed PC Engine Duo Battery/Charger pack
Unfamiliar with the Duo Battery?  Fits on the back of the unit, snapping into the slots on your Duo so it can be used on the road!  And this is the complete pack with the battery and charger (a separate battery-only pack was sold too).  The box may be worn, but the units are still sealed!  I'm not sure of the value (have an idea), so I'm taking offers on this really unusual item!
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http://www.multimods.com/images/Sales/DuoBatt1.jpg
http://www.multimods.com/images/Sales/DuoBatt2.jpg
http://www.multimods.com/images/Sales/DuoBatt3.jpg

Boxed TurboBooster:  $35 shipped
This is complete and boxed.  Even comes with the original AV cables!  Bagged too.  Manual seems to have never been opened from the bag.  Box has a tear in one end flap, but is EX otherwise.
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Boxed PAL TG16:  $85 shipped
A very unusual item.  Believed to be only released in Spain, this is a TurboGrafx that works on PAL TVs.  This comes with all the components it came with, which oddly enough came in a 2nd box.  Everything is NM, but the styrofoam has a broken off section and the box is VG/EX.  Coolest part is the system and controller have a red/blue logo combination on a gray console.  
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New/Sealed Zelda Collection for Gamecube:  $40 shipped
Yep, all the goods on one disc.  Still sealed and new.
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TurboBooster PLUS:  $35 shipped
In VG/EX condition and working fine.  For the uninitiated, this sticks on the back of your TurboGrafx-16 and allows you to use regular RCA audio/video like the TurboBooster, but this also has memory built-in to save games like Neutopia.
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want something?  PM me or e-mail to d-lite@neo-geo.com
All shipping is by USPS Priority mail with delivery confirmation and insurance included.  I accept PayPal and money order.  International shipping is fine with me, but will be a bit more.
#14
Haha, not the biggest news in my world, which would be the Turbo Duo sound fix, but this is the other scourge of the Turbo World! 

I was discussing the problems with Duo units with TZD's Steve and he mentioned that by far and away the biggest problem for them has been weak/no sound from Turbo Express units, even brand new ones!  So I asked if he could send a unit of two and I'd look into it.  Tried contacting RetroGames Bob Frasure, but no luck (still, if anyone has a way to contact him please let me know!).  So off I went with the multimeter.

So I sat with a TE with a weak speaker and started tracing the circuit back, looking for the culprit which I figured had to be a dead/dry capacitor or dead op amp IC.  Since there is a dense mask on the system, I had to do a lot of scraping and shining of light through the PCB to find the contacts.  Here's what that looked like:
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Notice the Op Amp for the sound highlighted and two little holes through the PCB.  These holes are the + and - of a capacitor that leads to the input into the op amp for the audio are also tied to the speaker line which is just above the "03" in L103 on the PCB.  Those holes are connected to this capacitor:
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So, I figured, likely culprit.  I tapped a new 100 uF, 25 Volt capacitor to the proper holes and SUCCESS@!!@!!   The sound amplified to a normal level!!!!!!  What I've noticed is that there are varying degrees of the sound issue from weak sound to no sound.  This mod works with both and even in the worse case it is amped to a satisfactory level.  Meaning there is likely another cap somewhere that needs looking at, but this fix will definitely work.

Here's step-by-step instructions on how to do this.  I can't make linking pics here to the bigger versions of these, but if you copy the location of the image I have and simply remove the "a" that's after the number, before the ".jpg", then you will get the 800 x 600 version.
All these are in this folder on my site:
https://www.multimods.com/TEsound/

OK, on the back of your TE, remove the 4 screws on the outside and the two inside the battery compartment:
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CAREFULLY separate the front and back of the unit enough that you can disconnection these connections.  The flat cables should be wiggled gently back and forth to make them loose.
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On the rear part of the unit, remove the screw indicated in the pic.  Note that the two holes we're soldering too are located where the arrow is pointing:
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Closeup of the holes with + and - indicated.
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Here's the culprit.  You can twist the cap off with a pair of pliers but leaving it in is no problem.
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Now take an electrolytic 100uF cap (25 V is what I used, but you can use 10V, 15V, etc) and connect two wires to it, preferably close to the cap body as shown so most of the wire and terminals are coved by insulation.  I used wrapping wire (30 gauge), but you can use 22 gauge, which is pushing it on how small the spots you're soldering too are.  Wires should be about 1.5-2" long.
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And now connected:
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Here I've tucked the cap under the PCB where there is ample space to hold it.  Note in the picture I have also added a short wire between two places on the PCB.  This is connecting the right and left channels on this unit since the right channel was dead.  I'm sure the issue with it can be solved, but this works great for addressing the problem at hand.
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Now with the PCB reset to it's place, note the location of the wires.  All you have to do now is screw in the proper screws and reconnect the cables (carefully!  I use needlenose pliers for the flat cables so I don't bend them) and you're done!!!
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So, there it is.  You can buy the capacitor dirt cheap in packs of 10-100 from DigiKey or Jameco and even Radio Shack has the capacitor.  All you need after that is 3" of wire and soldering equipment.  Oh, and a small Phillips head screwdriver.

If you need yours fixed, I will probably start offering to fix them for people shortly.  Shipping plus maybe $10 for the fix.  So about $20 shipped back to you (you pay shipping out, and then it's about $10 back to you).  I figure there are a lot of people that are nervous about soldering such small connections and opening anything electronic like this, so I'll probably offer to do this.  We shall see on this, but most importantly I wanted to make this available for everyone! 

Next biggy, and the one I'm most passionate about, the Duo sound issue!!!
#15
Yes, you read that right!!!  A NEW boxed PC Engine Duo Battery/Charger pack, as well as a boxed PCE Duo!

Unfamiliar with the Duo Battery?  Fits on the back of the unit, snapping into the slots on your Duo so it can be used on the road!  And this is the complete pack with the battery and charger (a separate battery-only pack was sold too).  The box may be worn, but the units are still sealed!  I'm not sure of the value (have an idea), so I'm taking offers on this really unusual item!
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http://www.multimods.com/images/Sales/DuoBatt1.jpg
http://www.multimods.com/images/Sales/DuoBatt2.jpg
http://www.multimods.com/images/Sales/DuoBatt3.jpg

NEW ADDITION:
Region-modded PCE Duo-RX!
Very nice condition with only normal wear marks and no yellowing.  I modded this to play both US and JP HuCards so now you can play anything except SuperGrafx with this!  Note that the original AC adapter and AV cables are included, just not shown in the pictures.
Up for grabs at $265 shipped priority, insured, tracked!!
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http://www.multimods.com/images/Sales/DuoRXRM2.JPG
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And a perfectly functioning japanese PC Engine Duo.  Boxed, with accessories, and styrofoam.  Serials do not match and the cardboard small box that contains the accessories is gone.  The Duo is in very nice shape with almost no scratches and plays great!  Includes manual and other paperwork in bag.  No sound issues here at all.
I'll sell it for $175 shipped priority, insured, and tracked

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http://www.multimods.com/images/Sales/PCED1.jpg
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http://www.multimods.com/images/Sales/PCED6.jpg

Interested?  Contact me by e-mail at d-lite@neo-geo.com

I take PayPal and money orders and will ship internationally. 

I also have some TurboBooster Plus units available.  Will sell for $38 shipped (priority, tracked) each.

Check my feedback at eBay ID dragsy and at neo-geo.com where I'm a moderator.