fpsjl wrote:
Would it be logical to use a signal tester down the board? Perhaps identify the issue in a more obvious manner? I've been considering picking one up from my retailer here in Canada... but I'm not exactly sure how to go about testing the drive circuit.
A signal tester is a useful tool to have on hand, but it's really not particularly well suited for finding intermittent problems. I really think the "poke and wiggle" method I alluded to earlier is the best way to find that kind of defect. The fact that it worked out of the enclosure and then started acting up when re-assembled is pretty typical of an issue with one of the pots or switches--tightening them down in the enclosure puts stress on the solder joints or possibly internally within a pot. You might want to consider taking the "guts" back out of the enclosure to relieve any such mounting stress and then work through the poke & wiggle process.
fpsjl wrote:
Could it be any solder joint, or do you think only one somewhere down the drive circuit (since many of the dials and switches seem to be doing something, I assume they are working correctly?).
Well, it couldn't be ANY solder joint, but it could conceivably be at almost any point in the main signal path, since it results in a sound cut-out.
fpsjl wrote:
I noticed that two of my diodes seem to have a solder spot together... They were super close on the circuit, could this be an issue as well?
Not a factor. Those diodes are already connected together, which is why it doesn't matter if the eyelets are touching.
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