[AMRadio] Intermittent Filament Pin


A.R.S. - W5AMI ars.w5ami at gmail.com
Wed Dec 27 02:09:56 EST 2006


On 12/26/06, Bill Fondren <bill.fondren at sbcglobal.net> wrote:
> This may seem to be a simple question but I have a 100th modulator tube that has a intermittent filament pin.  I have resoldered it a dozen times and it may operate for 2 weeks or 5 minutes.  Its in a BC 610 that I have just redone and have had it on for about 2 weeks.  the tube is a new or nos.  Is there a special type solder that would be better to use than just regular radio type solder    Bill Fondren K5PML

Bill,

Those Johnson "twist" sockets are notorious for not making good
contact on the filiment pins.  Have you swapped the 100th's to see if
it's the tube itself?

73
Brian / w5ami



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