No sir, i dont have the schematics, but i will do a search for zaccaria powersupply..
i get what you mean now, you are saying that i have 5.1 volts in the connector and in the end of the circuit it could be that it has dropped to 4,6 volts
but i measure 5,1 without anything connected, and 4,6 when the board is connected
if the PC powersupply delivers 5volts and regulates that in combination with the current drawn from it, it should theoreticly mean that i will have 5volts on the board while its connected, wich is more than the 4,6 that i have now.
so i like to try it just to see what happens, it does not harm anything i guess ?
If that does not satisfy can i remove all the IC's and can you read and check them for me ?
Im curiouse if its a rom / ram or other problem..
@ robinholland:
If everything fails do you want to take a look at the boards ?
It looks like you are an expert on PCB's and you are the person more close to me