Post
Topic
Board Mining (Altcoins)
Re: GridSeed 5-chip USB miner voltage mod
by
happydaze
on 28/04/2014, 15:50:33 UTC
re: troubleshooting 1 out of 5 chips working after voltage mod attempt

Is there anyway to trace things back from chip 4?  Chip four 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