Voltage Readings Fluctuating

hoselio35

Junior Member
Sep 6, 2012
10
0
Hey everyone.
I've come across a problem with my voltages. Right after they were all soldered, I measured the voltages a few times and every point was correct in correspondence with what Martin C posted in the Nand-X troubleshooting thread. So I tried to read the nand Using the Nand-X and JRunner but got "Can Not Continue" error. So I went back and checked the voltages once again to see that some of them had changed.
Points 2,5, & 6 all had the correct readings still, but 1,3, & 4 seem to be fluctuating with readings. 4 seems to switch between 0V and 3.3V every few checks which would make sense for a bridge between 2 and 4, but I checked for that with the multimeter. As for 1 and 3, they seem to be changing anywhere from .01V to .60V now. I checked for bridging on every one of them, which there was none. I also checked for continuity from the points on the top to their counterparts on the bottom of the board.

Thank you for your help.
 

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hoselio35

Junior Member
Sep 6, 2012
10
0
Thanks for the reply Martin. Is the soldering bad on both QSB's or just the one with the voltage problems? Also would you recommend getting rid of the QSB's altogether and just soldering the points directly?
 

Martin C

VIP Member
Jan 10, 2004
35,981
0
Scotland, UK
www.team-xecuter.com
TBH they're all bad. I can even see you managed to lift the 'B' pad on the QSB, which takes some doing.

You cannot remove these QSBs cleanly, so I would advise either finding someone to clean up or getting them to finish the job (while the console still works).