[AMPS] MLA2500 Problems
Wed, 22 Oct 1997 17:34:56 -0400 (EDT)
I am trying to fix a MLA2500 amp that was zapped on the CY9AA expedition.
Having little more than a DVM, I am at an impass.
We do have:
o High voltage on the tubes
o Filaments (tubes get warm)
o Relays operating (time delay, T/R)
o Some cathode voltage
o Some grid current when excited
We DON'T have:
o Idling plate current in transmit
o Any plate current when excited
o Any output in transmit
The amp went "zap" and quit working, after 3 days of intense use.
I welcome any and all suggestions of what to check next and how and, is it
down to tubes?
Tom Taormina, K5RC/7
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