[NJARC] Bring it up slow on the VARIAC

Matt Reynolds mattr04 at hotmail.com
Mon Nov 7 11:04:51 EST 2016


I've heard the variac trick for forming caps too, and I've heard both sides of the story, and being fairly green when it comes to electronics repair, I'm not qualified to offer much of an opinion on this particular point.


I did want to mention that at one of the repair clinics at the suggestion of one of the experts we used a variac to troubleshoot a short that was blowing out tubes in a series string TV (a Pilot TV in this case).  Every time I would plug the set in, I'd blow a filament, and then once the string was broken, you couldn't measure anything.  By using the variac to "halve" the input voltage, it was enough to adjust the voltage chart, do measurements, and find where the issue was without losing more tubes.


I'm sure there is more than one way to troubleshoot issues like this, but it worked out well, and I thought it was worth mentioning.


Regards,


Matt

________________________________
From: NJARC <njarc-bounces at mailman.qth.net> on behalf of antqradio at sbcglobal.net <antqradio at sbcglobal.net>
Sent: Monday, November 7, 2016 10:51:51 AM
To: NJARC at mailman.qth.net
Subject: [NJARC] Bring it up slow on the VARIAC

Just remember
Reply = Poster
Reply All = Everyone

_________________________________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/mailman/private/njarc/attachments/20161107/eeac090b/attachment.html>


More information about the NJARC mailing list