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48-482 AVC voltage divider
#7

Thanks for the replies. I brought my set and my problem to the Vintage Radio Service class at the Pavek Museum today (great place, by the way, don't miss it when you're in the Twin Cities!), and with some help from the experts there, we zeroed in on the junction of C417 and R412 as the AVC test point. From there, we were able to determine it's working just fine, and that the actual problem is poor contact on the band switch. In fact most of the toughest problems I've had with this set have been because of that freakin' band switch! Distorted fingers making loose contact with the sliding conductor--that's what's to blame!

I did, by the way replace R507 with a fresh 4.7M resistor, which I think helped, because measuring the removed old resistor, it came it at barely 2.7M. Strange--I thought these old resistors tended to drift up, not down.

In any case, all is well, and the 48-482 is just about finished! Thanks to you all for your thoughtful comments!

Mike


Messages In This Thread
48-482 AVC voltage divider - by mgutierres - 04-12-2013, 04:30 PM
RE: 48-482 AVC voltage divider - by morzh - 04-12-2013, 05:12 PM
RE: 48-482 AVC voltage divider - by mgutierres - 04-12-2013, 05:21 PM
RE: 48-482 AVC voltage divider - by BrendaAnnD - 04-12-2013, 07:45 PM
RE: 48-482 AVC voltage divider - by morzh - 04-12-2013, 09:15 PM
RE: 48-482 AVC voltage divider - by BrendaAnnD - 04-12-2013, 10:30 PM
RE: 48-482 AVC voltage divider - by mgutierres - 04-13-2013, 05:15 PM
RE: 48-482 AVC voltage divider - by Eric Adams - 04-14-2013, 11:02 AM
RE: 48-482 AVC voltage divider - by mgutierres - 04-14-2013, 02:09 PM



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