Topics

[Buy/Sell/Trade / Selling pc engine duo]

Almost forgot to post this,

I'm moving and getting rid of some extras I have.

http://www.ebay.com/itm/NEC-PC-Engine-Duo-Black-Console-/252464148595

I replaced the capacitors and added the region switch to this unit, I have had very little issues at all over the three years i have used it.

Every once and awhile the cdrom would not load but i think the spindle was just to low, I adjusted it before i posted and it seemed to work great.

also this is not the one i'm trying to fix "https://www.pcengine-fx.com/forums/index.php?topic=21208.msg463967", thats my last unit i'm hoping to keep.

happy bidding.

[Console Repair/Mod Center / Pc engine duo graphics glitch on cd]

Hi all,

It's been awhile, that's what happens when you have kids I guess..
I'm trying to finish repairing one of my duo's, it had a dead cpu that was diagnosed by thesteve, "thank you!" and I had put it in storage and did not get back to it.

I pop in a hucard and it looks great, no issues.


When I power it on with no hucard the cdrom menu is really messed up.


Currently the cdrom drive is not working because i need to replace vr105, so testing past the menu is not possible.
I was assuming the glitch was due to me replacing ic 520, apparently before I put it in storage when diagnosing the cpu I took out the ic but never put it back in. 

After looking at the datasheet I compared a sn74hc245 to this ic and I saw no difference, as such I used the sn74hc245 because I had some sitting on old parts boards.


I tried 2 different chips, same results on both.

I was wondering if this could be a ram issue, or I should just buy the ALS245A from ebay?

Any input would be helpfull thanks all!

[Buy/Sell/Trade / Pc Engine duo for sale on ebay!]

Hi all,

I wanted to post my listing for my recently repaired duo. "thanks thesteve for all your help!"
This is one that I had no issues with replaced the caps, and added the region mod, tested perfectly with us and jap hucard's as well as both regions cd's and backups!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251660043771

Check it out, I will answer any questions you guys have.

Have a good day!

[Console Repair/Mod Center / Dead pc engine duo]

Hi all,

I recived 3 duos from japan all with issues, i have so far fixed 2 of them..  O:)

But this last one has me stumped, I did some cleaning, replaced all the caps and all i get is a white screen mocking me when i power it up.

I replaced both 7805's and it reads 5v when the unit is powered on, i checked the cpu and all 5v pins are reading 5v.

There is no cards in the slot it should show me the load cdrom but it does not.

So i'm at a loss here, any input would be welcome..

Thanks

[PCE/TG-16|CD/SGX Discussion / Pc Engine Duo]

So I got 3 duo's coming in from japan, they are all in need of repair. "caps replaced, laser adjustment"

But my question to the forum is should I region mod if I'm going to sell one or more of them?

Or should i leave them pristine for my fellow collectors?

thanks for the input!