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Working on a JCM800 clone and am running into a weird continuity issue in testing. I am getting continuity between ground and both the tip and sleeve on the speaker output. Does anyone see any glaring issues? I'm sure that I am missing something dumb but would like some extra eyes to take a...

Does anyone know of the power amp of the orange super crush 100 is the same as the orange pedal baby? On the surface, they look the same but trying to confirm.

Have a muffin fuzz, green russian version, that I built a few months back. Worked well but then stopped working. Looking for some advice on where to start. I've reflowed everything and have started chasing voltages. Any thoughts would be appreciated. Think I am too close to it and frustrated 🥴

Really enjoyed building this one! Everything went together smoothly and it sounds great! Wish the rate was maybe a touch slower but that's not really a big deal. Forgot to order knobs and I haven't had much success in coming up with art work, so the labels are just temporary. Also learned...

I am getting ready to build a mojotone 100w British head and I have been trying to decide between building the super lead or the super bass version. Wondering if there is a reliable way to mod the design so that I can switch between the two? Has anyone done this or something similar that can...

I'm trying to get my hands on a couple of V3207Ds but all of my normal sources seem out. Has anyone seen these in the wild recently?

This comes out of a little Marshall MG10CF, which I can not find a schematic for. Looks like a blown up TDA2030A but there isn't enough left of the printing to verify. Can anyone let me know if I am chasing down the right thing?

See attached schematic for a power section. C27 (100n) is called out as being ceramic. Wondering if someone can explain why this choice was made and how it would affect the circuit vs using film?

Building a full sized parentheses. Wondering what the effect will be if i change the 100n at C4, C5, C2, C3 and C11 with a 220n?

Just got this Energy Concepts 30500 oscilloscope for free but there are no probes. I am familiar with the bnc connection kind but am not familiar with what type of probe connection this unit uses. Can anyone steer me in the right direction? See the picture

Just completed a Mofeta and I'm really loving it. Getting the JFETs biased was a bit of a pain but after a good bit of reading I think I got it right, at least it sounds great. I'm currently using it on the return in on an old Crate GX130c combo and it works really well in this way for my doom...

I am building a rev 2 wrectifier for my kid for Christmas. Got it all hooked up and got nothing but squealing. Squealing would go away if mids turned all the way up. No guitar sound. Did some tweaking and searching now it sounds like I have a grounding issue as well. Extra sets of eyes...

I have an old Crate GX130C combo that is a decent amp as a pedal platform, if you can keep the volume under control. It has a nice chorus built in but it recently went out. I'm looking for some help as to where to get started troubleshooting. I've attached the schematic. The chorus section...

Just finished putting together an Akronym for a Christmas present. Went to fire it up for a test run and.....nothing but an annoying squelching sound. Volume seems to adjust the level a little bit but gain does nothing to change the sound nor so any of the different modes. Looking for some...

First build in the bag (well first build on a pcb at least). Decided to go for the Kewpie as I had played a mayo pedal a few years back and loved it. Great pedal and a lot of fun to build. Please pay no attention to the backwards wiring on the switch breakout board! As it was my first build...