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Are the chili's for that "Hot" tone?

The Weicon's are made in Germany so IMHO would be higher quality than HF which is mostly Chinese knockoffs. HF has gotten better over the years but still isn't up to the standards if many of the original tools they copy.

I've been looking pretty hard at these.

Glad you got it fixed! Please mark this SOLVED

On Q4, you should have audio on the base and louder audio on the collector. What do you actually have? What type of transistor are you using for Q4?

Actually, the "C" in the middle denotes a non-antistatic switch. A "R" or "W" would be antistatic. It looks to me like the switch is wired correctly. If it were me, I would unsolder the blue and white wires from the switch, take it completely out of the circuit. Connect blue to blue and...

The switch's solder lugs don't seem to match anything on that datasheet. Do you have the part# of the keyswitch?

Do you have audio on either side of C14?

I get parts from them, all have been good quality. Then it may not be an issue. If the label didn't change it's probably a real part. If label totally washed off then more probable it's fake. But again TL072 is such a common low cost chip I don't see why it would be faked. Mouser has some...

This is good to know!

There is no way to check the vast majority of IC's with a multimeter in any mode. In fact you run a greater risk of damaging it through ESD (ElectroStatic Discharge) in doing so.

One way to remove an IC without harming the board is use some nippers or fine pointed cutters to carefully cut each leg. Once the IC is out of the way each leg can easily be removed individually. Bad thing about this method is it renders the IC unusable, even if it turns out it was not the...

I can't read the label on the TL072, did it wash off when you cleaned the board? That's one of the classic signs of fake components, the label easily washed off with alcohol or the like.

Possible. I'm trying to figure out everything common between the two pedals exhibiting the same problems. You might be onto something with the TL072's, I dont trust Amazon for any electronic components myself. Very few from Tayda, only the ones I cannot find from my normal sources. I don't...

Did you use the same power supply for both pedals? Have you tried different power supplies?

You can use a 5751, its basically a 12AX7 with about 30% less gain.

It took me a while to figure this out for myself, but since I did figure it out I really like Mouser now. The thing with Mouser is they carry so many parts it can be overwhelming trying to find the exact part you are looking for. The trick (for me) is to use the search and then the filters for...

Klein makes great Professional Electrician tools, I'm sure their meters are good quality. For capacitors I use a LCR meter that measures inductance, capacitance and resistance. The LCR meter is more accurate for resistance and capacitance than my Fluke.

When you did the second rebuild, did you use all new components or did you reuse some from the first build? The pic of the solder side of the board the board is out of focus, can't see any detail. The wood it's sitting on is in nice focus. When you have it unboxed, how do you have the...

Also try leaving it on at least 10 minutes then try it.