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Messages - JMart

#1
Thanks for the tips guys. I'll see if I can snap some picks and post them soon. I'm a newb to this so my knowledge is limited on the debugging with a probe. I'm slowly getting better and learning new things constantly. I've gotten 26 builds so far. I've had to debug quite a few of them, but 5 of them are still sitting in a drawer because it's something i believe is component related and not just a hidden short or wiring issue. I learn a good deal during the building process so I figured I'd get back around to those after I learn more about the circuits and what the components are actually "doing" to the audio signal, and not just "painting by number."  I've been reading up on how to build an audio probe to start that endeavor. I'm just waiting until I complete the little headphone amp + oscillator test rig I saw (on this forum I believe), and then I'll start trying to debug those 5 problematic builds.
#2
Tech Help - Projects Page / Re: Poindexter problem
August 01, 2012, 03:38:19 AM
I know this is an old thread and you've probably found your issue by now. But I was curious as to what you discovered. From my "untrained" eyes, it looks like your output jack is a little close to the back of the pot underneath it, and when a plug is inserted, the tip pole touches the pot forming a short to ground. I've made that mistake before and spent many many hours trying to figure it out! But mainly, I'm in the process of this build and was curious as to what issues people are running into.... Thanks
#3
Hello guys! I think I may have a bad diode, and was wondering if any of you that have debugged a build to find diodes the culprit could help. Everything seems to be correct with the wiring (how many times has that been said ;) and solder joints good - no shorts, etc.  But I'm getting a constant buzz with the pedal engaged. Its an Ibanez standard fuzz build Btw. Signal passes fine when effect is bypassed, but when engaged it just buzzes - pots, tone switch and clip switch have no effect on the buzz. I was just wondering if a cracked glass diode could potentially cause this type of problem? The reason i think its a diode is because two of these broke when I bent the leads down 90 degrees (with pliers). So I trashed them and bent two more.  After closer inspection, these two I installed look like they have a hairline crack on the underside- and like a dumb-a$$ I was too impatient to wait for the sockets to arrive in the mail (two days later I might add) and I soldered them in!!!  Any help is greatly appreciated! Thanks.