[Heathkit] HW-101

[Mike Hyder -N4NT-]

When in the audio section, check the grid-leak resistors if any there be. 
They hook between a tube's control grid and ground.

Mike N4NT

----- Original Message ----- 
From: "KA4INM" <ka4inm at gmail.com>
To: "h" <heathkit at mailman.qth.net>
Sent: Saturday, July 06, 2013 5:52 PM
Subject: Re: [Heathkit] HW-101


>   On 07/06/13 13:28, Bob KB1OKL Young wrote:
>
>> Hi all, new member here, I just powered up a nice HW-101 I bought about 5 
>> years ago, it works well, except that the audio volume drops from (loud) 
>> normal to a very low level within about 2 seconds of warm up. I need to 
>> leave the volume on full. A very strong signal is audible but less strong 
>> signals can get very soft to the point of inaudibility, kind of like when 
>> you switch off the AGC in a receiver. Got some tubes coming for it but 
>> off hand does anyone have any idea where I should start looking? I've 
>> gotten good reports on the audio and strength of the signal. Speaker is 
>> fine.
>
>   Try replacing the tubes on the board with the audio output tube.
> -- 
>   Ron  KA4INM - Youvan's corollary:
>                 Every action results in unwanted side effects.