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TG/PCE Repair/Mod Discussion / Re: Card slot problem or ?
« Last post by Lost Monkey on March 29, 2025, 04:50:54 PM »Necro alert...
I am reviving this 13 year old thread because I recently dug this broken console out and started trying to fix what ailed it.
To review - it would load and work fine with many HuCards, but not all. There was a definite pattern as to which cards would work and which would not.
Most of the ones which did work were TTI releases. This is still the case. Devil's Crush was one of the only NEC releases that would work on it.
Since things have changed a lot in the last 13 years, I decided to try something that I could not try back in 2012. I now have an Super HD System 3 (or whatever the fuck it is called) and figured that if this console worked with that, it would be the card slot that is the problem and I could replace it.
With the SHDS3, graphics were glitchy and games would sometimes crash after a short time. This led me to think maybe a ram issue.
I also confirmed that it would load the CD Stupid Card, and with the TGCD would load games, but they would be glitchy - missing graphics, crashing. Again - could be ram or ?
Here is what I have done so far:
At this point, it is still the same, with the glitchy graphics etc, and loading TTI releases (Devil's Crush and TV Sports Hockey load as well).
If I play Air Zonk, the game doesn't display any backgrounds and most sprites are the wrong colours, with the exception of the purple guys in the first level and the first boss.
New Adventure Island does display backgrounds and again most sprites are wrong colours. Sound seems to be normal.
I have a Hu6260 here - wondering if I should change it? I could also change all the caps, but they all look good.
I am reviving this 13 year old thread because I recently dug this broken console out and started trying to fix what ailed it.
To review - it would load and work fine with many HuCards, but not all. There was a definite pattern as to which cards would work and which would not.
Most of the ones which did work were TTI releases. This is still the case. Devil's Crush was one of the only NEC releases that would work on it.
Since things have changed a lot in the last 13 years, I decided to try something that I could not try back in 2012. I now have an Super HD System 3 (or whatever the fuck it is called) and figured that if this console worked with that, it would be the card slot that is the problem and I could replace it.
With the SHDS3, graphics were glitchy and games would sometimes crash after a short time. This led me to think maybe a ram issue.
I also confirmed that it would load the CD Stupid Card, and with the TGCD would load games, but they would be glitchy - missing graphics, crashing. Again - could be ram or ?
Here is what I have done so far:
- removed an s-video mod I had put in as a "practice run" - after taking this out, things got glitchier
- replaced the main RAM IC102, and this did nothing.
- replaced the VRAM chips with parts sourced from an old memory board IC110 and IC114 - no change.
- when replacing IC114, I found that two of the traces leading to it were broken - fixed and no better.
- replaced the crystal
- replaced the Hu6270 - no change.
- went over the whole board - toning out for continuity
- gave it a thorough scrub in an ultrasonic bath to clean up the board
At this point, it is still the same, with the glitchy graphics etc, and loading TTI releases (Devil's Crush and TV Sports Hockey load as well).
If I play Air Zonk, the game doesn't display any backgrounds and most sprites are the wrong colours, with the exception of the purple guys in the first level and the first boss.
New Adventure Island does display backgrounds and again most sprites are wrong colours. Sound seems to be normal.
I have a Hu6260 here - wondering if I should change it? I could also change all the caps, but they all look good.
