How to tell if mobo is working

[bouchandre]

So I have a spare GC motherboard and I would like to know what's the problem with it. It's still in it's original state without any trim done to it. I tried plugging it into the TV, and when I turn it on, the screen flashes once and stays blank. If I touch the processors, they are generating heat so current is going trough them. Does anyone know what's the problem? Thanks!

 

[chairsgotoschool]

Make sure you have good connections to ground and that the regulator is working properly. Otherwise I basically have a similar issue. My trimmed mobo heats up but no picture.

You can check resistance between G and 1.9v it should be around 25-30 ohm

 

[Blargaman91]

Make sure your connections between your mobo and screen are absolutely secure as well.

 

[bouchandre]

Thanks! I just checked ground and 1.9v on the motherboard and they seem to be bridged together, there is no resistance between them. I checked everywhere on the board but I can't find the connection.

 

[Tchay]

As a rule of thumb, you want to check all of your voltage lines when troubleshooting (before diving into anything crazy). With a multimeter, check your 1.9v line and see what it reads. Check the voltage while turning the GC on and off. It will quickly drop from 1.9v to 0 if there is a short.

Take some pics of your setup as well (closeup of the mob).

 

[bouchandre]

I found out what the problem was. After closer inspection I realized that I had removed the 2 mx chips from the motherboard a while back.