So, I picked this up last weekend, with the owner saying the usual "worked fine that last time I used it", but expecting otherwise.
So far, I've found:
Power button has a broken stud; will need to replace switch
Tape monitor circuits keep playing source when depressed
Volume control cuts out in weird ways*, and can be jiggled in position. Going to clean and hit all of the solder joints first, then tighten up and test again.
Even though there are no jumpers in the Pre-Out/Main In jacks, the signal passes thru. Are there internal jumpers that go into place when there are no cables inserted?
* Left channel has low channel and no bass, but wiggling it into the right position gets full sound back
Plans:
Full cleaning of switches, controls, and connectors
Replace power supply switch
Review volume control, clean resolder and test or replace
Relamp and replace vellum
Check bias and DC offset
Short of a full recap, what else might I be missing?
So far, I've found:
Power button has a broken stud; will need to replace switch
Tape monitor circuits keep playing source when depressed
Volume control cuts out in weird ways*, and can be jiggled in position. Going to clean and hit all of the solder joints first, then tighten up and test again.
Even though there are no jumpers in the Pre-Out/Main In jacks, the signal passes thru. Are there internal jumpers that go into place when there are no cables inserted?
* Left channel has low channel and no bass, but wiggling it into the right position gets full sound back
Plans:
Full cleaning of switches, controls, and connectors
Replace power supply switch
Review volume control, clean resolder and test or replace
Relamp and replace vellum
Check bias and DC offset
Short of a full recap, what else might I be missing?