I've got a Burns Orbit Three amp needing service on my bench. Don't usually do too much solid-state work, especially not of this era.
Schematic:
The whole amp is poorly handwired and is nearly impossible to navigate.
Anyway, I received it because the reverb wasn't working; couple bad solder joints. Now however, there is this audible ticking, about 6Hz according to my scope. For the life of me I can't determine where it's coming from. Could a bad capacitor start oscillating like this?
Then I started thinking maybe it was the LFO from the Vibrato bleeding into the signal path. Not sure that's the case since adjusting the rate of the vibrato doesn't change the rate of the tick.
I know there are some users on here who have experience with Burns amps and this model in particular so any advice would be appreciated!
Schematic:
The whole amp is poorly handwired and is nearly impossible to navigate.
Anyway, I received it because the reverb wasn't working; couple bad solder joints. Now however, there is this audible ticking, about 6Hz according to my scope. For the life of me I can't determine where it's coming from. Could a bad capacitor start oscillating like this?
Then I started thinking maybe it was the LFO from the Vibrato bleeding into the signal path. Not sure that's the case since adjusting the rate of the vibrato doesn't change the rate of the tick.
I know there are some users on here who have experience with Burns amps and this model in particular so any advice would be appreciated!
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