[Amps] HF-2500M Control Board
n2icarrl at gmail.com
Tue Jan 16 16:08:44 EST 2018
I am trying to troubleshoot a HF-2500M for a friend. After being
abandoned by the previous owner for many years, my friend fired it up
about 3 weeks ago. All was well until the big bang and flash. It was
just sitting there, idling at the time. The bang/flash seemed to be
coming from the control board.
Both of the fuses on the control board were blown. Nothing obvious,
looking at the control board. Everything in the HV PS area (under the RF
deck, of all places) looks fine. The control board schematic has me very
confused. Does anyone understand the circuit around the TIP2955, and the
relation to those fuses ? Anyone care to guess what the big bang was ?
Thanks and 73,
More information about the Amps