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Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Thu Jun 16, 2022 3:39 pm
by Pepe
Impressive how much work you put into it. Congratulations for saving the pedal!
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Thu Jun 16, 2022 5:26 pm
by laurie
hah! It ended up being something that "I wasn't going to let beat me".
Plus it did save a really good vintage pedal. Heartbreaking for something like this to end up in the trash/junk.
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Sat Jun 18, 2022 1:02 pm
by laurie
Finished repair.
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- DF-2 01.jpg (390.62 KiB) Viewed 1908 times
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Sat Jun 18, 2022 3:20 pm
by Pepe
I didn't remember it having such a crammed board!
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Sat Jun 18, 2022 9:13 pm
by laurie
Pepe wrote: ↑Sat Jun 18, 2022 3:20 pm
I didn't remember it having such a crammed board!
Yeah... fault-finding was a bit of a grind
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Mon Jun 20, 2022 7:06 am
by fuzzbuzzfuzz
Superb job Laurie, great effort, Columbo-esque!
Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?
Posted: Mon Jun 20, 2022 8:46 pm
by bigtone23
laurie wrote: ↑Thu Jun 16, 2022 12:17 pm
This is the failed transistor. The gain (hfe) should be around 500.
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DF-2.jpg
Nice work getting that one fixed! Deep sleuthing!
I know where my pedals will holiday when the time comes.
*Raises glass* *Cheers*