[AMPS] alpha89 and ft-1000d

[Kenneth D. Grimm, K4XL]

henry gillow-wiles wrote:
> Now, the amp goes into an hard fault, indicating a problem with the HV
> section, at random intervals. The transformer is tapped at 200 volts and
> the line voltage runs from 210 to 225 volts.
> Any ideas?
> Henry
> KB7RTA
> henry@pacinfo.com

I would change the transformer primary tap to 220 volts.  My guess is
that by having it set at 200 when you are actually getting 225 produces
a much higher voltage on the secondary than the protection circuitry of
the amp is designed for.  So when your line voltage occasionally hits
the 225 level, clunk, out goes the 89 with a HV fault.
Hope it is as simple as this.
73,
-- 
Ken K4XL
grimm@lynchburg.net
BoatAnchor Manual Archive - ftp://bama.sbc.edu

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