Worklog Ashida build, 0 electronics knowledge, help much appreciated

Retro95

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What symptoms is it showing? Is it just not posting to the portable screen?

It could be a multitude of issues rather than the whole board being dead.
 

SartoZ

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Some days ago the wii started to boot only after some hours of rest, I thought that may be a capacitor unable to discharge after the turn off, but after some troubleshooting it began to not booting at all. Eventually I disconnected everything but the RVL PMS2 and the composite cable, tried to solder it on both sides of the mobo (ofc I removed the 3,3V mode cable before)
Now it doesn’t produce neither video output nor heat in gpc and cpu.
Not a big deal, I wasn’t really satisfied with this mobo anyways. I made a lot of mistakes in the process and there was that misterious critical error in the system menu
 

SartoZ

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Here is a couple of pictures of the current situation.
EA1C56A4-2924-402B-8429-894DD490E44A.jpeg
CEE87F5C-A5D7-43B2-B661-47868035B3D4.jpeg

When it was still working I set the pms to turn on with that kind of switch, so to do all my tests I kept the chip wired with the audio pcb as I dom’t know how to properly wire that switch directly to the pms
 

CrazyGadget

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Aside from the cold solder joints, it appears you soldered composite to the wrong side of the composite filter cap footprint. Solder it to the other pad and give it a go. I'd recommend redoing those solder joints with some extra solder and plenty of flux.
 

SartoZ

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Hello everyone. So as I said I got another wii, got it trimmed and tested, everything was fine, but as I installed it in the shell... nothing changed.
The restart issue was still there. Just like the previous wii it "worked" for like 30 mins, I was able to play something although the video signal was bluish and there was no audio from headphone.
After some swears ad cursing the day I came across this site I think I finally found the problem(s?): I changed a voltage ground wire position from one of those gold screw holes to the one in the 1,15v component, but more important I got rid of the battery cables which were too big and damaged and I changed with some better ones.
Now it works like a charm!!
Then I moved the rgb cables to the downside of the mobo and fixed the blue tone image too! (It simply was the ground and data wires inverted of the red cable :facepalm:)

photo_2023-10-17_02-15-58.jpg
 

SartoZ

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Now I'm stuck with the headphone problem. They are not detected at all.
I was testing the connections with rvl-amp chip but I noticed that ground and right channel are switched
Nuova immagine bitmap (2).jpg
So I desoldered the chip (even slightly damaging the pcb) and tested the jack pads below and I got the same result
photo_2023-10-17_02-29-01.jpg
That doesn't make any sense, in the diagram of 4layer gnd and hr sould be inverted. Am I missing something?
 
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