Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Unknown Tubes on a 42-327
#5

The hair tricked worked quite a bit. I was able to identify three of the four unidentifiable tubes. The fourth at least looks like the pictures on the internet of a 7c6 and it was in the 7c6 socket. the 7b7's were in not in the right place though.

I disconnected the antenna and the buzzing is still there, present with the 170vdc too.

I have the schematics and I definitely don't see any 170volts on this set. The highest voltage in the schematics is 108vdc across one of the electrolytics. I have no idea where the 170 is coming from. Maybe a ground somewhere? I can't find any grounds to the chasis and the I've replaces the wires that looked worn. I also rechecked all my soldering and all the connections to make sure there wasn't a short (at least as well as I could). The ol' ohmmetter doesn't register a ground either between the chasis and any connection I could find.

I'm going to recheck my electrolytics in hope that I put them in correctly. The foil caps don't matter which direction they go in, right? I did not check direction on the foil caps.

Thanks for all your help and I'll continue my pursuits and let you know what I come up with.

-Brandon


Messages In This Thread
Unknown Tubes on a 42-327 - by regel_1999 - 03-04-2011, 10:23 PM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-05-2011, 10:31 AM
Re: Unknown Tubes on a 42-327 - by Carl Travis - 03-05-2011, 10:44 AM
Re: Unknown Tubes on a 42-327 - by BILL - 03-05-2011, 12:46 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-05-2011, 02:28 PM
42-327 with grounds - by regel_1999 - 03-06-2011, 02:19 PM
Re: 42-327 with grounds - by Ron Ramirez - 03-06-2011, 02:45 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-06-2011, 06:26 PM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-06-2011, 06:51 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-06-2011, 07:06 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-06-2011, 07:35 PM
Re: Unknown Tubes on a 42-327 - by DeckApe - 03-07-2011, 01:11 AM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-07-2011, 08:50 AM
Re: Unknown Tubes on a 42-327 - by 7estatdef - 03-07-2011, 09:45 AM
Re: Unknown Tubes on a 42-327 - by Glenn Roberts - 03-07-2011, 10:24 AM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-08-2011, 11:49 AM
Re: Unknown Tubes on a 42-327 - by Glenn Roberts - 03-08-2011, 03:38 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-08-2011, 03:46 PM
Re: Unknown Tubes on a 42-327 - by 7estatdef - 03-09-2011, 04:52 PM
Re: Unknown Tubes on a 42-327 - by Ed Locker - 03-10-2011, 09:03 AM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-10-2011, 06:29 PM
Re: Unknown Tubes on a 42-327 - by rplackey - 03-13-2011, 11:36 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-14-2011, 09:09 AM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-16-2011, 01:47 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-16-2011, 05:09 PM
Re: Unknown Tubes on a 42-327 - by rplackey - 03-16-2011, 09:15 PM
Re: Unknown Tubes on a 42-327 - by Ron Ramirez - 03-17-2011, 10:38 AM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-17-2011, 11:08 AM
Re: Unknown Tubes on a 42-327 - by rplackey - 03-17-2011, 12:32 PM
Re: Unknown Tubes on a 42-327 - by regel_1999 - 03-17-2011, 07:39 PM



Users browsing this thread: 1 Guest(s)