Tommy III crackle sound

[TillMack]

hey guys,
build my Tommy III today.
I already record with it and everything worked and sounded fantastic.
Then I leave my recording studio and the Tommy III was still on.
After I plug the guitar in again, I got a crackle sound, like a battery is dying.
Any suggestions? Visual everything looks perfekt.

 

[jimilee]

hey guys,
build my Tommy III today.
I already record with it and everything worked and sounded fantastic.
Then I leave my recording studio and the Tommy III was still on.
After I plug the guitar in again, I got a crackle sound, like a battery is dying.
Any suggestions? Visual everything looks perfekt.

Sounds like a ground, could be anything, though. Did you just finish building it or has it been built for a while?

 

[TillMack]

I finished it today. Used it for 3 hours without any problems, after that I changed the guitar to record again, then I got crackle sound.
The pedal is connected to a wallet. Every other pedal work. Also changed the guitars and cable. With my known working pedals everything is great, just the Tommy makes problems. I would also change the IC to check, but I don't have any LM1458 by hand right now.
As I said, visually everything looks good.

 

[jimilee]

I finished it today. Used it for 3 hours without any problems, after that I changed the guitar to record again, then I got crackle sound.
The pedal is connected to a wallet. Every other pedal work. Also changed the guitars and cable. With my known working pedals everything is great, just the Tommy makes problems. I would also change the IC to check, but I don't have any LM1458 by hand right now.
As I said, visually everything looks good.

Solder joints cooled down and one of them needs to be reflowed. That’s my initial guess.

 

[TillMack]

I will reflow everything.

 

[swelchy]

solder joint.... or uninsulted or bad insulated pot grounding out pcb?

 

[TillMack]

all pots have dust seals … I measure all ground spots with my multimeter and all looks good measurewise. Strange. What I wonder is, that I could record for 3 hours without any problems.