[R-390] R390 EMI filter replaced.

[jkharvie]

Thanks for the picture, of the line filter, data sheet attached showing expected performance.John N3JKE




Sent from AOL on Android 
 
  On Sun, Jun 23, 2024 at 18:08, Barry<n4buq at knology.net> wrote:   I don't think I took that many pictures along the way but this is what it ended up looking like.

Barry - N4BUQ

> I seem to recall it was the caps.  Their leads disintegrated.  I reused the
> inductors and used new caps.  I may have pictures of that operation I can dig
> up.
> 
> Barry - N4BUQ
> 
> ----- Original Message -----
>> From: "R-390 Mailing List" <r-390 at mailman.qth.net>
>> Cc: "R-390 Mailing List" <r-390 at mailman.qth.net>
>> Sent: Sunday, June 23, 2024 4:04:19 PM
>> Subject: Re: [R-390] R390 EMI filter replaced.
> 
>> BarryWhat failed?  Shorted cap or open inductor?Jim
>> Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy
>> 
>>    On Sunday, June 23, 2024 at 03:34:34 PM CDT, Barry Scott
>>    <72volkswagon at gmail.com> wrote:
>> 
>> Looks good.  Mine failed a couple of years ago and I rebuilt it.  It wasn't
>> fun but it can be done.
>> 
>> Thanks,
>> Barry - N4BUQ
>> 
>> 
>> On Sat, Jun 22, 2024 at 1:09 PM Frank Hughes via R-390 <
>> r-390 at mailman.qth.net> wrote:
>> 
>>> An R-390 I picked up years ago at a local Hamfest stopped powering up.
>>> Traced the issue to the SPRAGUE AC line filter.
>>> Replacing it w/ a CORCOM 3EQ1, which fits in the space where the original
>>> filter was installed.
>>>
>>> I recovered the original 4-pin male R-390 power connector from the SPRAGUE
>>> filter,
>>> so that the original power cord and appearance can be maintained.
>>> 73
>>> Frank
>>> KJ4OLL
>>>
>>>
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