Heath electrolytic problem

[Dick Blaney]

This is why I have always "re-formed" all "new" HV electrolytics before
installing.  Even those Orential jobs we get today.
73 de
Dick, WB8MHE

-----Original Message-----
From: Edward Swynar VE3 CUI <gswynar at DURHAM.NET>
To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
Date: Sunday, April 25, 1999 8:25 AM
Subject: Re: Heath electrolytic problem


>Most any edition of the ARRL HANDBOOK gives details on how to properly
>"...restore" those electrolytic capacitors that have sat idle for some
>time.
>
>I recently acquired a bunch of "cans" for future use in an HV power supply
>from a Hamfest, & proceded to restore them as described therein---I was
>amazed to see how quickly some were restored, while others took
>considerably longer (upwards of 20-30 minutes!).
>
>I imagine those slow "healers" would have surely erupted electrolyte from
>their wax-sealed vents, or worse!
>
>NOTE: the ARRL Handbook technique DOES NOT require the services of a
>variac...
>
>~73~ Eddy VE3CUI - VE3XZ
>
>
>---------
>> From: WB2TBB <ham at CYBERCOMM.NET>
>> To: HEATH at LISTSERV.TEMPE.GOV
>> Subject: Re: Heath electrolytic problem
>> Date: April 25, 1999 7:26 AM
>>
>> Had these caps been used lately??
>> Perhaps all would have been ok if it were brought
>> up slowly with a variac.
>> If nothing else, you may have received a warning in the form of
>> a hum or buzz that all was not well.
>> ...Dave
>> -----Original Message-----
>> From: , Bob Ensminger <bens at VALINT.NET>
>> To: HEATH at LISTSERV.TEMPE.GOV <HEATH at LISTSERV.TEMPE.GOV>
>> Date: Sunday, April 25, 1999 2:31 AM
>> Subject: Heath electrolytic problem
>>
>>
>> >I just replaced all electrolytics in SB101 using my other PS from SB102
>and
>> >all worked fine.  I then replaced the 2 small (20 mfd/150v) and the 40
>> >mfd/450V.  I fired it up and all worked for abt 1 minute then the 40
>> >mfd/450v blew sending smoke signals and parafin type wax came out.  I
>had
>> >checked the cap and it was 44 mfd but I don't have a checker for
>leakage.
>> >Could I have another problem or did I just have a bad cap I installed.
>I
>> >have several more used caps to replace.  I will appreciate any help on
>> >this.
>> >Thanks,
>> >Bob, KQ7J
>> >
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