Right side not working on Extended Foreplay 3

[Doc B]

That very strongly indicates that you have a cold solder joint somewhere. Check the solder pads around the LEDS and R2 on the side that stayed lit after you turned the preamp off, and also check the connections of the wires from the board to the tube socket to make sure everything actually got soldered. If those connections all have solder on them, reheating them all may very well solve the problem.

 

[Bribase]

Thanks Doc

Just out of interest, what would cause one of the joints to fail? Would moving it be enough to cause the problem? It all doesn't speak too highly of my soldering skills!

B

 

[Doc B]

Actually if moving it caused the problem I would guess that it is most likely a joint that was missed altogether at some terminal. That doesn't reflect as negatively on your soldering skill as it does positively on your skill at attaching the lead so it conducts even without solder, which is classic military spec soldering procedure. I recommend a magnifier for inspection.