Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

User avatar
Pepe
Posts: 1672
Joined: Thu Aug 16, 2018 2:19 pm
Location: Germany
SBZ: Multi Platinum
Bossarea: Double Platinum
Contact:

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by Pepe » Thu Jun 16, 2022 3:39 pm

Impressive how much work you put into it. Congratulations for saving the pedal!
Pepe at YouTube and Instagram

User avatar
laurie
Posts: 1633
Joined: Fri Aug 17, 2018 2:07 am
Location: Canada
SBZ: Multi Platinum
Bossarea: Multi Platinum

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by laurie » Thu Jun 16, 2022 5:26 pm

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.

User avatar
laurie
Posts: 1633
Joined: Fri Aug 17, 2018 2:07 am
Location: Canada
SBZ: Multi Platinum
Bossarea: Multi Platinum

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by laurie » Sat Jun 18, 2022 1:02 pm

Finished repair.
.
DF-2 01.jpg
DF-2 01.jpg (390.62 KiB) Viewed 1865 times

User avatar
Pepe
Posts: 1672
Joined: Thu Aug 16, 2018 2:19 pm
Location: Germany
SBZ: Multi Platinum
Bossarea: Double Platinum
Contact:

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by Pepe » Sat Jun 18, 2022 3:20 pm

I didn't remember it having such a crammed board!
Pepe at YouTube and Instagram

User avatar
laurie
Posts: 1633
Joined: Fri Aug 17, 2018 2:07 am
Location: Canada
SBZ: Multi Platinum
Bossarea: Multi Platinum

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by laurie » Sat Jun 18, 2022 9:13 pm

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 ;)

User avatar
fuzzbuzzfuzz
Posts: 489
Joined: Thu Aug 23, 2018 11:25 am

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by fuzzbuzzfuzz » Mon Jun 20, 2022 7:06 am

Superb job Laurie, great effort, Columbo-esque!

User avatar
bigtone23
Posts: 314
Joined: Mon Feb 04, 2019 6:33 pm
Location: Colorado, United States

Re: Whining Sound DF2, Does Anyone Have Suggestion Which Capacitor Could be the Culprit ?

Post by bigtone23 » Mon Jun 20, 2022 8:46 pm

laurie wrote:
Thu Jun 16, 2022 12:17 pm
This is the failed transistor. The gain (hfe) should be around 500.
.
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*

Post Reply