Hey everyone,
I have a power amplifier that has not been working lately, more accurately it shorts hot and neutral together when I turn it on via the mechanical switch on the front of the unit.I used a multimeter to trace the problem to either the transformer or bridge rectifier.
transformer ratings:
I/P 0V-110V 0V-110V
O/P 59V-0V-59V/22A
62V-0V-63V/0.5A
17V-0V-17V/0.5A
22V/0.5A
bridge rectifier:
I'm not really sure the part number associated with this bridge rectifier, the only identifying marks on it is that symbol and "QL 14-3" which isn't giving very promising google hits.
A close up of the diagram on the label:
So by this diagram I shouldn't see a short on the to AC inputs but I do. I guess I could just desolder the connections and test for continuity.
I know that the transformer ratings are for 110 but this unit did have 220 applied to it's transformer input through miscommunication. What kind of damage would 220 do to a 110 transformer, did some of the enamel on the magnetic wire become faulty? or did I just most likely fry the input to the bridge rectifier?
I have a power amplifier that has not been working lately, more accurately it shorts hot and neutral together when I turn it on via the mechanical switch on the front of the unit.I used a multimeter to trace the problem to either the transformer or bridge rectifier.
transformer ratings:
I/P 0V-110V 0V-110V
O/P 59V-0V-59V/22A
62V-0V-63V/0.5A
17V-0V-17V/0.5A
22V/0.5A
bridge rectifier:
I'm not really sure the part number associated with this bridge rectifier, the only identifying marks on it is that symbol and "QL 14-3" which isn't giving very promising google hits.
A close up of the diagram on the label:
So by this diagram I shouldn't see a short on the to AC inputs but I do. I guess I could just desolder the connections and test for continuity.
I know that the transformer ratings are for 110 but this unit did have 220 applied to it's transformer input through miscommunication. What kind of damage would 220 do to a 110 transformer, did some of the enamel on the magnetic wire become faulty? or did I just most likely fry the input to the bridge rectifier?