1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
(Lack of) tracking on 41-255
BrendaAnnD
Phorum Expert
*****
Posts: 1,108
Threads: 89
Joined: Jun 2011
City: Tacoma State, Province, Country: Washington
#6

11-18-2011, 05:25 PM
Eureka! The problem ended up being a well-disguised broken ground strap from the tuner to the chassis. I should have gotten a clue earlier when I noted that getting my hand or a tool anywhere near the tuner caused frequency changes, but one doesn't think of broken ground braids..

It tracks a lot better now, but still won't drop in perfectly. It's up to 20 KHz off in the middle of the AMBCB if I align it to be spot on at 600 and 1440 (and it's way off at the top: 1600 comes in at 1660).
Find
« Next Oldest | Next Newest »


Messages In This Thread
(Lack of) tracking on 41-255 - by BrendaAnnD - 11-17-2011, 09:54 AM
Re: (Lack of) tracking on 41-255 - by 7estatdef - 11-17-2011, 04:28 PM
Re: (Lack of) tracking on 41-255 - by BrendaAnnD - 11-17-2011, 05:01 PM
Re: (Lack of) tracking on 41-255 - by exray - 11-17-2011, 06:16 PM
Re: (Lack of) tracking on 41-255 - by 7estatdef - 11-17-2011, 11:47 PM
Re: (Lack of) tracking on 41-255 - by BrendaAnnD - 11-18-2011, 05:25 PM
Re: (Lack of) tracking on 41-255 - by codefox1 - 11-18-2011, 08:05 PM



Users browsing this thread: 2 Guest(s)
[-]
Recent Posts
New Philco Repair Bench
I am sure this is the archive, and not the Chuck's site.morzh — 09:50 PM
Made mistake & did not label connection
It's not like we are good friends with that wire and can tell it from other ptetty identical looking wires. Why'n't you...morzh — 09:49 PM
Made mistake & did not label connection
I'm not sure why that wire wasn't covered in the video. I'm pretty sure the 6A8 won't work until that pin is grounded. Y...RodB — 09:47 PM
Made mistake & did not label connection
You'll have to forgive me, I am not sure what you mean.  Can you explain what you are really saying.  If anyone does not...georgetownjohn — 08:05 PM
Made mistake & did not label connection
Those are details better left to the ones who know. Maybe you disconnected the wrong end of the wire.RodB — 06:22 PM
Made mistake & did not label connection
Maybe this is starting to make some sense in my hard head.  Is this why the wire in question was not in the great Ron Ra...georgetownjohn — 04:34 PM
Made mistake & did not label connection
I was correct with the 6A8 pin connection's, 7 and 8 are connected to ground as well as the tube shield (the broken line...RodB — 02:41 PM
Made mistake & did not label connection
What does the dotted line representing that surrounds the tube in the schematic?georgetownjohn — 02:17 PM
Made mistake & did not label connection
Hello John, I have been there either label got lost or was not labeled ! Sincerely Richardradiorich — 02:15 PM
Made mistake & did not label connection
Sorry, it is a Philco 37-640.  Does that help?--Johngeorgetownjohn — 02:14 PM

[-]
Who's Online
There are currently no members online.

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration