[Amps] AL-811 AMP.

[carl seyersdahl]

Ray. It would seem that the op/stby switch has failed , because if that
switch doesn't work you wont get a transmit lite , and the antenna relay
can't operate either.It's also possible you've lost the gnd connection that
keys the amp . Also, you shouldnt have any grid current in stby anyway.
There is peculiarity in the metering which I've seen before, but that's
another story and has no bearing on the current problem.
    carl / kz5ca
----- Original Message ----- 
From: "Ray" <w8cnl at mindspring.com>
To: "AMPS" <amps at contesting.com>
Sent: Sunday, February 06, 2005 2:46 PM
Subject: [Amps] AL-811 AMP.


AL-811 AMP.
Three 572b's
AC on,  Opr off.
Tubes light up
HV shows about 1800 volts
Ip shows no grid current
Opr to XMIT
Nothing, no red xmit light, no standby grid current,can not key amp.
I don't believe the antenna change over relays are operating.
Turn off at night, was working great. Next morning nothing.

Nice little amp when it works. Sucks when it doesn't.
Any ideas ?? What breaks by turning it off ( or on).
Any mods for this thing? Meter lights last about 4 or 5 months.
My 751A keys it perfect. First thing it did was burn relay contacts in my
761.

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Raymond H. McClure - W8CNL
5 McKenzie Circle
North Augusta, S.C.
29841-4319

Meddle not in the Affairs of Dragons, for Thou Art Crunchy and Taste Good
with Catsup or BBQ Sauce

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