[R-390] Capacitor Replacements Vitamin Q

[rbethman]

BBODs, Tiny Chiefs, and similar are INDEED paper caps.

So are the brown postage stamp ones of old.

I haven't had a single Sprague Vitamin Q give me an issue.

Bob - N0DGN

On 1/24/2011 2:43 PM, Barry wrote:
> Aren't BBODs paper?
>
> Barry - N4BUQ
>
>
>   On Mon 24/01/11 11:26 AM , Tisha Hayes tisha.hayes at gmail.com sent:
>> A good rule to follow is to replace what is proven bad and leave the
>> restalone, unless you have good reason.
>>
>> Good reasons to replace capacitors;
>> 1) They are paper
>> 2) They are BBOD's
>> 3) They are way out of spec
>> 4) It is the "killer cap" on the mechanical filters
>>
>> Wholesale replacement may sound like a nifty idea but you can end up with
>> aradio that is seriously out of alignment if those caps are in the RF/IF
>> deck.
>>
>> I have tweaked with capacitor values in the audio section to improve
>> frequency response and done a few AGC mods to eliminate the "moment of
>> silence". Sometimes I change cap values in the B+ supply to reduce
>> ripple(Chuck Ripple , ).
>>
>> To a large extent, there is a similar set of rules for the wholesale
>> replacement of resistors.
>>
>> -- 
>> Ms. Tisha Hayes/ AA4HA
>
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