3DO ZONE Forums

kinda funny and kinda embarrassing... :oops: the problem was not in the power supply after all. The power board does a little buzz normally when its not connected and when its short-circuited this buzz becomes high pitched and louder. so my friend and I concluded that it should be something on the m...

ok then

Thank you again

Thanks!

just one thing... did you measure these voltages with the power board connected to the main board?

I think that the real voltages it outputs are read with it disconnected, or not?

Glad I could help.

BTW. I know a way you could actually thank me

Please, if you can, measure the voltages that the power supply provides and post them here pin to pin.

That should make things easier on my buzzing-power-supply-issue on the other topic.

this is strange...
this resistor (R733) is green and has a '0' on it... just this.

Would it be just a jumper?

Thank you a lot. A friend of mine and me were trying to figure out the problem yesterday. The main transistor (the one with the heat sink) is probably ok (not opened or short-circuited) as well as the capacitors. It seems that some diodes have a leak problem, we'll try to replace them with a similar...

I've got some knowledge in electronic stuff (not enough it seems :? ) so I've opened the console to see what could be wrong. This buzz is high pitched when I connect the power supply to the main board and low pitched when I disconnect it... Does anyone knows what voltages this power supply provides?...