Recent Posts

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TG/PCE Repair/Mod Discussion / Re: PC engine burning smell + green/white/ blue screen

« Last post by Tengugurl on Today at 07:27:44 AM »

Hi there!
Leaving it plugged in for a matter of seconds.
No chip is getting hot. (Felt the RAM, Felt the GPU/CPU) and nothing.

Checked the power rail getting a solid 5v off the 7805 and everything down stream is receiving 5v+ correct.

The PSU is a 9v unregulated NEC PSU that came with the console. It's pushing out 13v center negative but the step down is taking place correctly downstream.

It smells awfully and it is frying Hucards now
I bought a backup PC Engine and sure enough I put a Hucard into the damaged one it fries it and it gives me a white screen on the Good PC Engine. (not going to try that in fear of it spreading to my good console lol)

I've seen a few videos online and I am really thinking I need to logic probe this bad boy and replace a component.

Idk.. caps look good but it's not posting so I am thinking graphics arent being sent to the HUc6260 idk..

Sucks!

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TG/PCE Repair/Mod Discussion / Re: PC engine burning smell + green/white/ blue screen

« Last post by PDiggity on Today at 06:07:24 AM »

How long are you leaving it on - Is one chip hot after a time?
Which power supply are you using? How much voltage is it actually outputting?

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PC Engine/SuperGrafx Discussion / Re: Some important NEWS about the PC Engine!

« Last post by Necromancer on Today at 01:33:12 AM »

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TG-16/TE/TurboDuo Discussion / Re: Prince of Persia Inquiry...

« Last post by AkumajoTonyX on December 14, 2019, 05:03:45 PM »

I loved PoP, I still have great memories of playing through this beast. I wonder if I'd have the patience to make another effort to run through the whole thing...

Speaking of this style of game, I was always a bit bummed that Out of this World and Flashback never got a SCD release.  I think the Turbo Duo SCD platform could've easily handled those games and it's a shame they never got ported.

Even though PoP has a cool redbook audio score for the SCD, I absolutely adore the SNES soundtrack and prefer it over NEC's. You should definitely have another go at it. There aren't many games like it. The only other game that might come close is Nosferatu.

I agree, OOTW and Flashback should have absolutely been released on SCD. I own the 3DO version of OOTW, and I must say the soundtrack is breathtaking. I would imagine that NEC's would have used the same score.

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Chit-Chat / Re: Secret Santa 2019

« Last post by gex on December 14, 2019, 04:54:44 PM »

Just got my gift shipped out today. Super late but glad I was still able to participate in the festivities 

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TG-16/TE/TurboDuo Discussion / Re: How this guy named Dom shipped my CIB Duo

« Last post by gex on December 14, 2019, 04:38:45 PM »

i picked up the DH for $150
Power Golf was what i boiled

wtf what did i miss in discord now

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Chit-Chat / Re: Draw a game with MS Paint quiz

« Last post by Gredler on December 14, 2019, 01:07:06 PM »

Hahaha ya i am down to sub in an sloppily sketch something if someone guesses correctly and passes.

Tailspin was correct, thanks BT!

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Chit-Chat / Re: Draw a game with MS Paint quiz

« Last post by _joshuaTurbo on December 14, 2019, 12:53:47 PM »

i got it.  BUT, like galam, if i guess it, i probably won’t do one next.

Everyone should feel free to guess- even if you don't drawz a new one a few of us (even me?) chummers will step up to fill in for ya!

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TG-16/TE/TurboDuo Discussion / Re: Prince of Persia Inquiry...

« Last post by _joshuaTurbo on December 14, 2019, 12:45:50 PM »

I loved PoP, I still have great memories of playing through this beast. I wonder if I'd have the patience to make another effort to run through the whole thing...

Speaking of this style of game, I was always a bit bummed that Out of this World and Flashback never got a SCD release.  I think the Turbo Duo SCD platform could've easily handled those games and it's a shame they never got ported.

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TG/PCE Repair/Mod Discussion / PC engine burning smell + green/white/ blue screen

« Last post by Tengugurl on December 14, 2019, 12:31:55 AM »

Hi!

bought a White (original) PC Engine off ebay and was sad to see it was faulty.

Overview:
I am greeted with different color screens each time I power the console on and off with a game inside.

Also, it smells like burnt electronics every time the console is turned on. (Especially near the back extension port). Which is odd as I am using a stepdown converter that I have used on all my Japanese consoles.

Mitigation steps:

Having done some research on this in my late-night repair video searching (We all do it if we enjoy fixing things lol) and I had found out:

Problems:
1) The Green/White/ Grey/ Blue Screen boot screen (One color or the other depending on the consoles mood) means
* Game is not read and the AV works on the console

2) Checked the Fuse (Fuse does not shown blown)

3) Checked the Caps and they don't show any corrosion nor bludging.

4) Check the 7805 (checks out 5v no issues)

5) Check the traces for cuts, and or damaged CPUs, or GPUs . (All looked fine, though I have not seen a schematic to find shorts)

6) Clean with IPA while searching for issues (Done and still no issue, even tried removing the HuCard a bit while powered on and no change

7) Felt for heat/ hot parts to see if something was shorting but nothing got hot?

Questions:
1) What could be wrong with the console? If the following look good:

A. Good caps
B. No burns/scorch marks
C. No blown fuse

If this thing is smelling like burnt electronics, yet nothing is hot, what could be causing this?


Looking forward to any assistance that can be provided.

It's super hard to find PC Engine/ Turbo Grafx16 documentation/ fixing examples on the internet.