[Amps] Alpha 78 won't turn off

Jim Barber audioguy at q.com
Thu Sep 22 10:22:00 PDT 2011


I have a 76A that does this once in a while as well. If there's a known 
cause, please post to the list!

Thanks,
Jim N7CXI

On 9/20/2011 8:07 AM, CHUCK CULLIAN wrote:
>
>   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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