Weird Revision C problems

[hailrazer]

Just wondering if anyone had a clue on this one.

I've been tinkering with some Revision C's.

I found the points to input 12v , 3.3v, 5v, and 1.9v.

I removed a lot of the spare parts on the board related to the power supply that were not needed.

I wired in my custom regulators and everything works fine.

I then go to cut the board down using the safe method. After doing this there is the 12v audio line and a 5v controller line that needs to be re-run for the system to work.

But then I run into problems. When I hook up power without hooking up the AV (I left the factory AV plug on it and am using the factory AV wire) the system turns on , disc spins and starts reading the game just fine. Then when I plug in the AV the 3.3v line blows, becoming shorted to ground and I fry a board.

I have now done this 3 times.

Any freakin idea why plugging in the factory AV cord would fry the 3.3v line ?????

 

[Ashen]

Can you post pics of the cuts you are making Hail? Also with the connection points you are using for power. Are the GC's PAL or NTSC? I know PAL composite cords have a low resistance resistor installed between composite and ground, but I don't see why this would kill your board.

The connection points for power are slightly different on revC cubes when using a custom reg. You aren't connecting power to your rev C like my guide shows to connect a rev A/B are you? :/

Also, just to eliminate any other possibilities of error. Don't input 5v or 12v to the board to test functionality. 5v really isn't needed at all and 12v is only used to power the audio amp. Lets get your system running reliably before we mess with the extra voltage lines.

 

[hailrazer]

OK I finally figured out what has been going on.

Because of there being multiple layers on a Gamecube board when you cut it you need to be VERY careful of the edges of the board AFTER the cut.

A lot of times the different layers can be touching each other, which is problematic if the grounding strip is touching a power strip.

Apparently on some of the boards this has been randomly happening.

The solution is to sand the edges of the board with 100-200 grit sand paper.

This will reduce the possibility of random shorting.

 

[Ashen]

The GC mainboard is a 4 layered PCB!! What this means is that after cutting it you will need to sand ALL of the edges and make sure none of the layers are touching so you don't kill your little cube!

Like the 5th sentence in my guide.

 

[hailrazer]

The GC mainboard is a 4 layered PCB!! What this means is that after cutting it you will need to sand ALL of the edges and make sure none of the layers are touching so you don't kill your little cube!

Like the 5th sentence in my guide.

That's not even close to what I said.

 

[bud]

 

[Ashen]

What Bud said.

 

[hailrazer]

What Bud said.

But Bud really didn't "say" anything........

 

[bud]

 

[ShockSlayer]

"Are you serious?"

 

[hailrazer]

Does Christmas cause everyone to lose their sense of humor ?

 

[Seren]

lol sarcasm on the internet

 

[bud]

Does Christmas cause everyone to lose their sense of humor ?

To be honest, you really haven't painted yourself as the joking type. I see you as a to the point kind of guy so naturally I assume you're serious when you say something.

I apologize for the misinterpretation.