GameCube not Powering on

G

GamecubePerson111

Active Member
Okay, so I just wired up a Wiikey fusion to a gamecube motherboard and am not able to power up the gamecube. I am just wondering which connections may be causing this issue. I am using zenlocs custom regulator and am getting the correct voltages into the corresponding pins on the cube (1.9, 3.43, 7). I don't know what else could be the problem as I have checked and double checked the wiring of the Wiikey fusion. Let me know if anyone has any ideas as to what might be the issue. Thank you.
 
5v is only really used for the DVD drive and for rumble in the controllers, so I'm sure it's not being used by anything on your board anyway.
Can you simply disconnect the Wiikey from the board to see if it comes back on?
 
Yes, at the moment I am not able to work on it but I will try disconnecting the wiikey. Before I had wired it up the cube was turning on so that must have to be the problem.
 
Okay so just disconnected the Wiikey and still no picture. I can feel the chips warming up and have checked and triple checked connections but still no video. Any ideas?
 
It should. Most times both processors get warm but there's no output it's a connection issue between your GameCube and your screen/amp. You could try several different displays if you haven't.
 
Alright, I've been using an av cable hooked up to a tv that I know works. I guess I'll try a different cable. Because it was showing video from this exact cubes motherboard only a week ago. Then once I wired the Wiikey I lost video. Guess I'll check the video connection and I'll check for audio as well.
 
Okay so I just tested for audio and video simultaneously and still nothing. Both chips are still getting warm. However, I just tested for voltage along the 1.9v line and my multimeter says 1.7, could that be too low?

Edit: when the regulator is disconnected it reads 1.9, while when it is connected it reads 1.7. Could there be some resistance along this voltage line?
 
That's normal because voltage naturally drops in a meter's readings when it's being used. That's a sign that the processors are working.

Maybe the ground you're connecting to the monitor is loose. Or it might not be ground at all if you accidentally connected it to the wrong point.

What's more likely is the 3.43v line is shorted. Did you ever check that? The AV chip and other components use 3.43v so you're certainly not going to get any output if it's not present.
 
Okay, so it can't be ground since so have the ground soldered to the gold strip on the outside of the cube motherboard.

As for the 3.43v line I am getting the correct voltage there and do not have a short there. Should I check elsewhere on the board for a short on that voltage line?
 
No, I don't think that would show anything. If the 3v43v line was shorted to ground it would be reading 0v... and I can't think of a reason 3.43v would be shorted to any specific data line.

Have you trimmed the board at all? Anywhere you cut the inner and outer layers can touch very easily and to prevent that you have to sand anywhere you've cut a great deal.
 
Okay so yes I have checked and there is a part that I cut, there may be a short there. Would sanding it hopefully take away the short? Also wouldn't the chips not heat up if there was a short on any of the data lines?
 
Just switched out motherboards completely and the problem seems to persist, all the chips heat up while I do not get a video or audio signal. I know I have the ions correct because the tv flashes when I power on the cube but then nothing. What could I possibly be doing wrong?
 
2cn8il4.jpg

You wired 5v to the thermal protection line. That's probably not good.
 
One thing that I always do when my power stops working is to get my multimeter and check both sides for continuity in voltage, amperage, and connection. It's only like 5 wires so it's not that hard. If that all checks out then make sure the values from the regulator are the same as another one. Otherwise it's the gamecube motherboard.
 
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