The parts list gives make and model. I believe I found an equivalent at
Mouser or Digi Key the last time once I removed the old one and measured
dimensions.
Carl
KM1H
----- Original Message -----
From: "Jim Barber" <audioguy@q.com>
To: "Carl" <km1h@jeremy.mv.com>
Cc: <amps@contesting.com>; "CHUCK CULLIAN" <k6rf@aol.com>
Sent: Thursday, September 22, 2011 2:16 PM
Subject: Re: [Amps] Alpha 78 won't turn off
>I suppose in the case of my 76A it could be "sticky" contacts, since it
>only does it when warm after usage, and then only sometimes.
>
> Carl, you wouldn't happen to know of a good replacement off the top of
> your head, would you?
>
> Thanks,
> Jim N7CXI
>
>
> On 9/22/2011 11:11 AM, Carl wrote:
>> Sounds like K1 has welded contacts and it is a family affair as the 76
>> series has the same circuit.
>>
>> A semi PITA to replace as its down low and behind the front panel.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "CHUCK CULLIAN"<k6rf@aol.com>
>> To:<amps@contesting.com>
>> Sent: Tuesday, September 20, 2011 11:07 AM
>> Subject: [Amps] Alpha 78 won't turn off
>>
>>
>>>
>>> I have an Alpha 78 that wouldn't turn on and I found that a 10K power
>>> resistor that dropped the 220 down to 110 to turn on the main relay was
>>> open. When I replaced it, the amp came on but when the off button is
>>> pushed, it only turns off momentarily while the off switch is held.
>>> When
>>> I let up on the Off switch, the amp comes back on. Any ideas?
>>>
>>> Chuck K0RF
>>>
>>>
>>>
>>>
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