OMG! ZIRIA! ZIRIA!! ZIRIA!!! IT ACTUALLY HAPPENED!! 34 YEARS LATER!! The epic/legendary Tengai Makyou/Far East of Eden: Ziria JRPG has finally been localized! Supper the Subtitler struck again! Simply unstoppable, NOTHING can prevent him from TOTAL PCECD localization domination!!!! WHACHA GONNA DO BROTHER?!?!
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Messages - Duxcub

#1
Thanks for the reply, Keith.

I saw an older post here about Voultar fabricating mod boards specifically for the IFU, so I thought maybe there had been a new method discovered, or something I didn't know about to begin with.

Your work-around with the SCART cable is a pretty good idea. Up to this point I've just recommended people get a Duo instead, but the briefcase units do have a certain nostalgic appeal. I know when I first saw one in a magazine as a kid, I thought it was the coolest thing  8)
#2
I've tried RGB modding several IFUs over the years, but have never been able to produce what I consider acceptable video output. There are 2 issues I can't seem to eliminate, and I'm hoping someone will be able to provide some guidance. I've seen past posts about this, but never any solutions.

1) When I do VileTim's jailbar fix to the PC Engine, it looks great on its own, but when i put it into the IFU and use the IFU output, the jailbars return. This has been a consistent problem on all the PC Engines and IFUs on which I have attempted the mods.

2) There is always very noticeable image noise, usually diagonal lines moving across the screen. It can also look like swirling noise on solid colors. I have tried pulling ground and/or +5v from several places on the IFU board, and tried using a larger gauge of wire for power and RGB lines, but nothing seems to improve it even a little bit.

Thanks for any help you can all offer. Hopefully someone has success stories to share, I'd love to figure this out :)
#3
Thanks for the replies so far.

I did test with a multimeter, but maybe i missed something. Lots of traces between the slot and multiple chips. I'll go over it again.

I just wanted to make sure i'm not missing something obvious that only the hucard side uses.
#4
I mod and repair lots of Duo consoles, but I've never run into this. The CD part functions perfectly - SuperCD games play fine with no skipping or any graphical problems. The games actually run, I can control the character on screen and such. But no Hucard games will run, it's just a yellow screen. The slot is very well cleaned at this point, and the Hucards I'm testing with work on other systems.

I've tested continuity between the slot and huc6280, huc6270, and several chips on the bottom of the board (IC518,517,520,516, AND IC906). Based on simply visually following the traces, continuity seems good.

Is there a ram or other chip that is only used on the Hucard side that may have failed? It seems totally bizarre that the game part of the CD actually is playable if there's something wrong with a main chip.

Thanks everyone :)
#5
Are you using an official NEC power adapter for the IFU? Every third party adapter I've tried has caused nasty horizontally scrolling lines on the screen. I package an AD-IF30A with all of my IFU RGB mods for this reason.
#6
QuoteI have the console getting sync from the composite video. I did not hook directly to pin 44 on the Hu6260.
My Sony PVM will only accept a c-sync signal for sync. It looks scrambled like in your pics if it is trying to use the composite video signal for sync.

Edit: the mods i have done for my personal setup all use an LM1881 inside the console, and output the resulting c-sync signal on the composite video pin of the SCART cable.  However, this method means that i can't use the consoles on a regular tv through composite. 

So putting an LM1881 in the cable from the switch to the PVM is probably the best solution, imo.  That way he can still use composite video on all his consoles, but that single cable will strip the sync from the composite signal of anything connected to his PVM.
#7
Quote from: thesteve on 03/03/2016, 01:18 PMbypass them
they were removed in the duo-r, (tho the board is drilled for them)
they are reactors, reacting each signal against ground, unfortunately they actually add interference as they directly introduce crosstalk from other signals on the plug
Awesome, thanks so much for the quick reply!
#8
Hi all,

Longtime modder/repairist working on my first couple of DUOs.

I recently bought 2 non-working DUOs from a seller on ebay.  Apparently, they were someone else's mistakes, because they had both been recapped with very sloppy soldering, some pads missing, wires disconnected, etc.

Anyway, one was purchased as "no video out to tv," which i thought might be a fuse or something else easy.  Unfortunately, it must have been relegated to a parts machine, because the 3 coils near the AV Port were removed!  I swapped in the 3 from the other unit, and everything works great after the re-recap.

So now the other unit has none, and I need to find some.  I'm really not familiar with this part, which I assume is a filter for video and audio.  The only thing written on it is "TOKIN 10."  I found something on Mouser, but the physical sizes on the datasheet are about 3 times the size of what I need.

Anyone able to help me source them?  Thanks in advance!

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