Quote from: happydaze on April 28, 2014, 03:50:33 PM

re: troubleshooting 1 out of 5 chips working after voltage mod attempt

Is there anyway to trace things back from chip 4? Chip for is either the last or the first. 0,1,2,3,4 depending how things are connected.

How can I tell if power is getting to chip 3 for example? How can I tell it is getting a signal to start?

Cpuminer shows it is sending the command to set the frequency for all chips and start mining but maybe that is more of a com chip function. Maybe the other chips aren't even on. I can't figure out what to look for from the pdf schematic.

Could a break after chip 4 stop the other chips from working? Chip 4 is closest to the 12v power jack I think. Chip 2 is in the center. Chip 2 had the solder oozing out from under. I've been mopping that up but might need a better magnifying glass or even a microscope to inspect.

Are there any test points on the board to check for general working condition?

I want to work on it but I don't know what to do next. Sad

i glad you mentioned that as i was wondering myself which physical chip on the board corresponds to sandors111 0,1,2,3,4 chips. Im assuming that 0 in the cpuminer corresponds to the M1 in the schmatic through to m5 (being chip4 in cpuminer).
And looking at the PCB

	M1
M3	M2	M4	Power Supply
	M5

Looking at the PCB -from above - with the power supply on your Right

so M1 = CPUminer chip0
M2 = "" "" 1
etc etc
M5 = "" "" 4
If sandor could confirm that itd be great