[R-390] R-390A Restoration Progress (or lack of)

[rbethman]

Dick,

PLEASE check your microswitch.  This is a VERY normal occurring issue.

Bob - N0DGN

Richard W. Solomon wrote:
> I checked the Electrlytics when I replaced the not so wet any more
> Tantalum. They looked good on the ESR Meter. I tested all the tubes 
> and they checked OK.
>
> One thing someone mentioned I should look into. The Power Strip line
> is "fused" by a GFI breaker. So are all the outlets in the garage.
>
> I'll bypass the filter and see what happens.
>
> 73, Dick, W1KSZ
>
> -----Original Message-----
>   
>> From: rbethman <rbethman at comcast.net>
>> Sent: Dec 12, 2008 7:44 PM
>> To: r-390 at mailman.qth.net
>> Cc: "Richard W. Solomon" <w1ksz at earthlink.net>
>> Subject: Re: [R-390] R-390A Restoration Progress (or lack of)
>>
>> Dick,
>>
>> I know of NO line filters being "available".  C103 is either right next 
>> to the line filter OR is the line filter.
>>
>> You either HAVE to bypass it OR re-build it.
>>
>> Unfortunately this IS a reality of life.  The OTHER possible issue is 
>> that 1) the power micro-switch is STUCK closed.  2) IF 1 is true - then 
>> the two CAP cans on the Audio Deck could ALSO be bad.
>>
>> Check the circuit board under the Audio Module.  Sometimes an audio tube 
>> goes bad AND takes out one of the larger carbon composition resistors.
>>
>> My "best" guesses.
>>
>> Bob - N0DGN
>>
>> Richard W. Solomon wrote:
>>     
>>> I got to the point of putting AC to it. That's after replacing
>>> the "IF Killer" cap and the "Audio Leaking" cap. Tested all the
>>> tubes in a TV-7, replaced 3 of them. Cleaned off the 1" of crud
>>> from 10 years storage in the barn.
>>>
>>> So, now lets apply power or not !! As soon as I plug it in the
>>> breaker on the strip pops. (yes, the radio is in the off position
>>> when I do this). I assume it must be the Line Filter so tomorrow
>>> I shall bypass it and see what happens.
>>>
>>> There is also C103. Not sure where in the circuit it lies.
>>>
>>> Are replacement Line Filters available ? And no, I am not in the
>>> mood to rebuild it !!
>>>
>>> 73, Dick, W1KSZ
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>>>   
>>>       
>> -- 
>> Bob - NØDGN
>>
>>     
>
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>   

-- 
Bob - NØDGN