Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 643 restoration
#8

I'm slowly making progress on the chassis. I discovered that the audio coupling transformer is also a replacement but tests OK. The same cannot be said of the antenna coil though Icon_sad

[Image: http://farm7.static.flickr.com/6183/6106...ecdd_z.jpg]

What I find really strange is that every tap of this coil is open. Someone had connected a low ohm flexible resistor from one tap to ground. I assume that was an attempt to restore reception.

Surprisingly, the antenna coil in the modified chassis is good. So I have the option of repairing this one or swapping it out. Either way, it's not going to be fun. So many connections to deal with ...


Messages In This Thread
Philco 643 restoration - by Bob Andersen - 08-04-2011, 10:13 PM
Re: Philco 643 restoration - by Bob Andersen - 08-05-2011, 01:44 AM
Re: Philco 643 restoration - by Ron Ramirez - 08-05-2011, 06:38 AM
Re: Philco 643 restoration - by TA Forbes - 08-05-2011, 12:36 PM
Re: Philco 643 restoration - by Ron Ramirez - 08-05-2011, 12:59 PM
Re: Philco 643 restoration - by Bob Andersen - 08-05-2011, 07:28 PM
Re: Philco 643 restoration - by TA Forbes - 08-05-2011, 10:07 PM
Re: Philco 643 restoration - by Bob Andersen - 09-02-2011, 04:29 PM
Re: Philco 643 restoration - by TA Forbes - 09-02-2011, 11:39 PM
Re: Philco 643 restoration - by Ron Ramirez - 09-02-2011, 11:43 PM
Re: Philco 643 restoration - by Bob Andersen - 09-03-2011, 12:30 AM
Re: Philco 643 restoration - by Ron Ramirez - 09-03-2011, 07:59 AM
Re: Philco 643 restoration - by 7estatdef - 09-03-2011, 11:44 AM
Re: Philco 643 restoration - by Arran - 09-05-2011, 01:24 AM
Re: Philco 643 restoration - by Bob Andersen - 09-07-2011, 11:11 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM

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

>