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[Console Repair/Mod Center / PCE GT repair help (super hard!) needed please o_o]

So my friend gave me his childhood PCE GT to fix.  Lots of sentimental value.  and man is it busted.  At some point the 5v rail I believe shorted and it fried the controller board IC.  ordered a new controller board, but I don't know what else it took with it.

I get a yellow and reddish screen, split in 2, with noise lines in the middle (attached).



- Fully recapped
- Fully cleaned in Ultrasonic and manually with 99.9% IPA
- No audio (I can hear speaker hum, and volume works.  I'm confident audio amp output stage is OK.
- +5V rail is good (4.85v)
- +2.5v rail is good (for audio)
- 24mhz clock is good on both ASICs (followed guide from TG-16 service manual)
- H sync and V sync outputting correctly
- Backlight circuitry all tested good, 30V and 24v OK.  All oscope probes of transformer check out too.  Screen seems to be fine.

What I did in addition to above:
- swapped in full Hudson ASIC chipset from working CoreGrafx (white)
- probe (diode) tested every on the Hucard slot.  Compared with working unit, and values seem to be as expected / close (bus pins within range of each other, no obvious shorts).
- swapped in one of the VRAMs from the CoreGrafx as well

I'm at such a loss with this one...the board looks *so* clean.  anyone know of other stuff to look at?  I've poured so much time into this one it hurts.

I'd be so indebted to a helpful benefactor.  Willing to send thank you gifts!
<3

Thanks in advance!

[Console Repair/Mod Center / Re: Schem for adding composite video to original PCE]

Not that anyone cares, but I whipped up the correct circuit.  Add these parts for correct A/V out on a white PCE (they are found in the Core Grafx II).



-Segasonicfan

[PCE/TG-16|CD/SGX Discussion / Re: First time in probably twenty years: a find in the wild!]

I love it when that happens! It's like seeing one of these:


One of the craziest finds I ever had was a US TG-16 box. I had never seen one before but coming home on the bus one day there was a box on the sidewalk... blowing into the street.  This was only a block away from my house!  I thought I was high/dreaming/something but sure enough, one of my neighbors must've thrown it out and didn't have the heart to stuff it in a trash bin. I cleaned it up and gave it to my friend who was an avid TG-16 collector