The first things to go generally on these old amps is the power filter capacitors and these are often all rolled into one single ‘Cap Can’. Here’s mine in place in a GA-5 Medalist. These are (IIRC) wax paper and foil capacitors and are sealed with wax. It is electrolytic but has a single ground […]
Entries Tagged as 'Cap Can'
February 20th, 2012 · 8 Comments · Amp Repair, Medalist Debug
March 28th, 2011 · 2 Comments · Amp Repair, Medalist Debug
As you might recall from two posts ago (“Scoping the Power Supply”) we were unable even to scope the power supply ripple at TP3 and saw a hideous deformed thing at TP5. The lack of filtering certainly indicates that C4A (the 20μF from the cap can) was blown. Since that big funky cap can itself […]