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73 jmp50 problem

6/22/2003 8:50 AM
johnc	73 jmp50 problem removed a post pi mv i did and since then it wont go.when switching on the standby switch horrible really loud oscillating(?)hum ensues even with volume turned down.checked all connections involved in mod undo,tried different valves in all positions to no avail.while checking things noticed b+ voltage bleeds off almost immediately, something that didnt occur previously.the amp was going great before but as someone who is no expert this has me baffled.any help greatly appreciated

6/22/2003 8:50 AM

johnc

73 jmp50 problem

removed a post pi mv i did and since then it wont go.when switching on the standby switch horrible really loud oscillating(?)hum ensues even with volume turned down.checked all connections involved in mod undo,tried different valves in all positions to no avail.while checking things noticed b+ voltage bleeds off almost immediately, something that didnt occur previously.the amp was going great before but as someone who is no expert this has me baffled.any help greatly appreciated

Replies:

Chris ( CMW amps ) JohnHave you checked the PI... -- 6/22/2003 12:29 PM