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

Model 640 restoration questions.
#3

Tad,

Yes, the Sprague caps sound like replacements.

The shroud that goes around the bulb would probably look like the reflector from a small flashlight. Actually, that's not a bad idea - perhaps you could come up with one (preferably metal, not plastic) to use as a replacement. You could probably leave it in its silver color, or paint it a flat black. The material is fairly thin, so if you need to, cut it to shape as needed.

As far as other components go, resistors can often drift out of tolerance. Check them and replace any that are 20% or more off. When they do drift, they go up in value. Stay close to the correct wattage as best you can. The higher value resistors are the ones that are the worst (500K and up). Also, generally speaking, the smaller mica caps rarely go bad, so leave them be.

After getting it working, I'd recommend doing an RF alignment on the set. It should really sound great after that.

Looks like you have youself a winner! Icon_biggrin

Bill

Sent from my Pentium II on the AT&T Dial Network


Messages In This Thread
Model 640 restoration questions. - by Guest - 03-23-2007, 02:43 PM
[No subject] - by Chuck Schwark - 03-23-2007, 03:52 PM
[No subject] - by Bill Hutchinson - 03-23-2007, 03:58 PM
[No subject] - by Guest - 04-02-2007, 02:09 PM
The band that doesn't work...... - by AI2V - 04-02-2007, 07:48 PM
[No subject] - by Bill Hutchinson - 04-04-2007, 03:41 PM
[No subject] - by Guest - 04-05-2007, 08:09 PM
[No subject] - by planigan - 04-14-2007, 01:32 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 46-480 Electronic Restoration
At long last, it is aligned! I’ve uploaded a couple of new videos to YouTube to demonstrate. YouTube picked up on Hall a...jrblasde — 10:08 PM
Studebaker/Philco AC-2687 car radio
Hello Phil, Welcome aboard what is the model number of that radio ? Sincerely Richardradiorich — 10:06 PM
Studebaker/Philco AC-2687 car radio
Just speculating of course, but you could probably find another transformer from another car radio of the same era, pref...Arran — 09:00 PM
Studebaker/Philco AC-2687 car radio
Hello I am new here and I could use some advice. I am working on my 1955 Stude/Philco car radio and have determined tha...Pdouglaski — 06:43 PM
Philco 42-345 Restoration/Repair
Thank you MrFix55 and GarySP with helping with the Antenna, for now I am placing the Antenna on the back burner and work...osanders0311 — 02:24 PM
The list of my radio & TV collection!
Yes, Michael. But strangely enough, I managed to keep the original veneer. I must admit that I don't really like it, so ...RadioSvit — 02:21 PM
The list of my radio & TV collection!
Good radio. I bet there was a lot of veneer fixing.morzh — 02:16 PM
Philco 46-480 Electronic Restoration
>> it is because I am retired and a little demented. You have just the right amount of it. No perfectly sane p...morzh — 02:14 PM
The list of my radio & TV collection!
Old Zenith 5S-29 tube radio. First turn-on after repair and reception quality testing. Demonstration of the operation of...RadioSvit — 01:27 PM
Philco 42-345 Restoration/Repair
Welcome to the Phorum, osanders0311!  Regardless how far you intend to restore this set, first priority should be replac...GarySP — 11:51 AM

[-]
Who's Online
There are currently 2013 online users. [Complete List]
» 2 Member(s) | 2011 Guest(s)
AvatarAvatar

>