Turbo Express - Button 1 does not work

[Amerika]

Hello!

I recently acquired a Turbo Express that was listed as "powers on but you only get a black screen".  So, I took a gamble on it thinking it might be an easy fix.  Well, it turns out that not only was the LCD cracked during shipping somehow (box looked fine and it was packed extremely well) but it did have the issue of no image.  I replaced the single cap to check if I could still get video on the cracked screen to see what other problems the unit might have.  And it had virtually every issue haha.  Along with the no video, it also had no audio at all, power connector was flakey and button 1 did not work.  I fully recapped the unit and all of those issues are no resolved...except button 1.

This is a link to a bunch of extra pictures just in case somebody wants a different angle - https://photos.app.goo.gl/p1y8TQbUKeH4k9Tx7

However, this is what it looked like when I got in there - https://photos.app.goo.gl/TkXyCH3Zgh6ADuxWA

What it looked like after I cleaned it up - https://photos.app.goo.gl/tvBj3LXkdmeYRcd5A

And what it looks like now after reinstalling a new cap and cleaning it up more - https://photos.app.goo.gl/hbjjonGTNt4ExYNJA

My guess is that under the carbon or w/e that black stuff is on the trace next to where the capacitor is (and where there was some corrosion, there is a cut trace.  As you can see, that line goes directly to button 1.  What would be the best way to repair this?  My assumption is that I get past that black carbon stuff and reflow the trace if possible.  If not, I did find this website that has what appears to be a pretty slick solution to my problem - https://nfggames.com/forum2/index.php?topic=4238.0

Should I do what is stated on that website or is there a better way?

Thanks!

[Keith Courage]

Yeah, those black traces can go bad. Go ahead and try tapping a wire for button 1 to see if it gets it going again. Hopefully that works. Sometimes in a worst case scenario the contact for the pad on the board itself needs to be repaired in which case conductive copper tape can be used to make new connections.

[Amerika]

Yeah, those black traces can go bad. Go ahead and try tapping a wire for button 1 to see if it gets it going again. Hopefully that works. Sometimes in a worst case scenario the contact for the pad on the board itself needs to be repaired in which case conductive copper tape can be used to make new connections.

Is the black stuff the actual traces themselves?  Or are they just covering the traces underneath?

[Amerika]

I got it taken care of but thanks for anybody who took a look.  I went ahead and did the fix recommended in that article I linked.  But since I have proper wire for the job, I decided not to drill through the board as I am trying to be as non-destructive as possible right now (I say that now while I'm considering an 3.5" lcd and a battery mod).  This worked quite nicely and button 1 is now fully restored.

https://photos.app.goo.gl/Roo3wJECsKGuBKtV8

[thesteve]

worst case i designed and turbokon sells complete replacement controller PCBs