Weird spring reverb problem

An audio community like no other.

Moderators: rick, Mark Bassett

Weird spring reverb problem

Postby Text_Edifice » Tue Apr 18, 2017 11:35 pm

Hi all,

mid mix tonight my vesta-kaza spring reverb started humming and then feeding back with any input applied.

I don't really know where to start with troubleshooting as it looks like the unit feeds back when any signal is sent to the input (even if nothing's plugged in to the output). I think maybe something is oscillating (opamp maybe) but not sure.

Before I go swapping out components - has anyone had a similar problem / have any advice for trouble shooting?
Dave Carter

http://www.twitter.com/davecarter
Text_Edifice
Frequent Contributor
Frequent Contributor
 
Posts: 955
Joined: Sun Nov 27, 2005 12:00 pm
Location: Hobart

Re: Weird spring reverb problem

Postby a.d.a.m. baby » Wed Apr 19, 2017 10:00 pm

is there a schematic around??
User avatar
a.d.a.m. baby
Registered User
Registered User
 
Posts: 197
Joined: Tue Sep 15, 2009 11:49 pm
Location: Gold Coast

Re: Weird spring reverb problem

Postby Text_Edifice » Thu Apr 20, 2017 8:52 am

That's the problem, I can't find one. I think it might be an issue with grounding as the shield on the inputs feeds into the circuit (seemingly by design) for some reason. But I can't find a schematic to check where this might be occurring.

I think next step is to just replace the various caps and look for any blown resistors / diodes.
Dave Carter

http://www.twitter.com/davecarter
Text_Edifice
Frequent Contributor
Frequent Contributor
 
Posts: 955
Joined: Sun Nov 27, 2005 12:00 pm
Location: Hobart


Return to The Turtlerock Forum

Who is online

Users browsing this forum: No registered users and 2 guests