1680 receiver hum

[mike bryce]

bruce...

check for proper ie. 13 volts, from the output of the pass transistor. it's
mounted on the large alumimin heat sink on the rear plug in board. this guy
goes bad and will cause the entire rig to be over voltage. it also makes the
rig humm....


--
Mike Bryce WB8VGE
SunLight Energy Systems
"Electricity at the speed of light"

> From: "John Q. Doe" <BIGWATER1 at AOL.COM>
> Reply-To: BIGWATER1 at AOL.COM
> Date: Fri, 8 Sep 2000 13:22:55 EDT
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: Re: 1680 receiver hum
>
> I recently acquired a HR-1680 receiver which appears to work with the
> following exception.   If the AF gain is turned up all the way it is OK.
> However, a hum appears when the gain is not all the way open.   I have no
> schematic or manual, but suspect a capacitor problem.   Can anyone help with
> a suggestion on how to fix this?
>
> Bruce
> Ocala, FL
>
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