Can a CRT Monitor Damage my GameCube?

[Blargaman91]

Hi, I've been having a problem with several GameCubes that seems related to my monitor. Ever since I started using a certain CRT monitor to test the output on my GameCube (video + audio), 3 motherboards have acquired very bright, glitchy composite video that for some reason even an AV transplant never fixed. S-video output and audio are not affected. The problem has happened like this: I cut the board to an OMGWTF cut, I prep it for the components I want to put on it, I get the preamp back to functionality, and the next time I turn it on, the picture is blank. Then I try to turn it on again, and the picture suddenly comes up very bright and glitchy. I made a post about this a while back, but now I'm concerned because it has happened again, and only since I've started using that dang monitor. Does anyone know what it could be?

 

[ttsgeb]

The best way to break a gamecube with a crt is to drop the crt on the gamecube.

Find a different screen for testing. See what happens. I supposed if the crt was messed up just right, it could be causing feedback to be send through the lines, potentially frying the cube.

 

[Blargaman91]

Tested on a large flat screen TV or the CRT, the video just looks ultra bright. On my small 3.5 inch screen, though, it's also very glitchy. The lighting is dark here, bright there, and it's very unappealing. I also noticed putting any amount of capacitance between the video line and your screen causes there to be no output at all. I'm not doing anything that I normally wouldn't but perhaps I'm cutting the board wrong? I just don't understand.

 

[ttsgeb]

Test first on a different screen. Like, with a fresh board.

 

[Blargaman91]

Do you think that I could fix my current board, though? I can't necessarily keep buying more, and I've got 3 semi-useless boards now with this problem.

 

[megalomaniac]

svideo works but composite has issues....
take a look to see if its a problem with the resistor on composite line...

posted on ashen's board cut thread...

 

[Blargaman91]

Okay, thank you. An update: S-video no longer works properly on one of the damaged boards. Chroma gives no signal and luma is now unusually bright as well. Removing all the components on the composite video line and drawing it straight from the chip does not seem to do anything different.

 

[Blargaman91]

Does no one really know what's going on?