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PsyPher
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PC Engine GT / Turbo Express button trouble

by PsyPher Fri Oct 17, 2014 5:33 am

I bought a PCE-GT recently and found that the unit works 100% accept for the I an II buttons. i took a look inside and could see that the capacitor on the control board had leaked so i replaced it but still have had no luck. does any one have any ideas as to what else i could try to do to get this unit back up and running?
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SpoonyBard
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Re: PC Engine GT / Turbo Express button trouble

by SpoonyBard Fri Oct 17, 2014 11:20 am

Have you checked for any damage on the controller board ribbon cable?
PsyPher
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Re: PC Engine GT / Turbo Express button trouble

by PsyPher Fri Oct 17, 2014 9:24 pm

yea the ribbon is fine, it looks like the black traces are where the issue is some parts seem to have been eaten away by the leaking capacitor. any ideas on how to repair them? I was able to repair the I button but the one button has an issue going to the turbo section.
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samsonlonghair
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Re: PC Engine GT / Turbo Express button trouble

by samsonlonghair Sat Oct 18, 2014 9:02 am

I would say double-check your soldering. Also, make sure you used the right caps.
Also, electrical contact cleaner can work wonders.
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Ziggy587
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Re: PC Engine GT / Turbo Express button trouble

by Ziggy587 Sat Oct 18, 2014 9:29 am

Can you take pictures of both sides of the board? We might be able to determine what has been damaged by the leaking capacitor. A fresh set of eyes never hurts.
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My Sale Thread - I am selling around three quarters of my video game collection as well as some other odds and ends!

I want to buy Universal Game Cases, if you have any spares please PM me! I'm looking to only deal with members that have good BST feedback on this forum.
PsyPher
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Re: PC Engine GT / Turbo Express button trouble

by PsyPher Sat Oct 18, 2014 9:38 am

this is a picture i had on hand from before i started working on it. i think at this point I'm trying to restore continuity on the long black trace from the one (I) button. also i realize in the picture that the trace has fallen off connecting the button to that trace path but that part has been repaired already (i hope anyway). what is the best way to go about fixing those kinds of traces anyway seems there is no copper underneath them to expose?

thanks for the fast responses guys i really appreciate it.
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PsyPher
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Re: PC Engine GT / Turbo Express button trouble

by PsyPher Sun Oct 19, 2014 9:55 am

hey guys just wanted to let you all know that after laying down some new traces with some copper strands i was able to fix the issue but I'm still wondering if there is a better way. perhaps conductive paint or something? I've never used that before though.
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Ziggy587
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Re: PC Engine GT / Turbo Express button trouble

by Ziggy587 Sun Oct 19, 2014 10:05 am

I tried using conductive paint on a GM keypad, and it didn't last long. But those GM keypads are really shitty, so I don't know if it was a good test.

They make products specifically for this use, which might be better. Here's two I found on Amazon...

http://www.amazon.com/dp/B0081SGM8M/ref ... KI2PPUUA29

http://www.amazon.com/dp/B003D8G8SY/ref ... EC9GTCE6QF

I haven't tried either yet, but I've been wanting to.

Note that those are for the rubber buttons, not for these "black traces". But I can't see how that would matter.
Image

My Sale Thread - I am selling around three quarters of my video game collection as well as some other odds and ends!

I want to buy Universal Game Cases, if you have any spares please PM me! I'm looking to only deal with members that have good BST feedback on this forum.
PsyPher
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Re: PC Engine GT / Turbo Express button trouble

by PsyPher Sun Oct 19, 2014 10:17 am

yea i saw that stuff but wasn't really sure about it as i had heard mixed results. the other issue is I'm in japan and couldnt find it on the amazon japan site (but i also didnt really look that hard) but i think i might buy some of that stuff just to have on hand for some other projects.
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