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

Molded paper capacitors
#4

Chuck,

I spent some time rummaging around the component section of your site. I think the rectangular components I thought might be micamold paper caps are probably mica caps of body style 6 with pf values and RMA color code.

I traced a few of them down in the schematic as best I could, and they all corresponded to a cap with a pf value that matched the dot pattern.

Then I unsoldered a few and measured the capacitance. The results were not encouraging. Most had values very different from the dot pattern, so I think I'll be replacing them.

While I was looking, I looked over some caps that were similar but lighter colored, reddish instead of brown. Some have a six dot code and some have three. At least some are microfarad range caps that look similar to, but not exactly like, some of the other body types on your mica cap page. Two of them had "MFD" and "Type 2" stamped on the body near the 3 dots. I might need to puzzle the values out from your table or else find them on the schematic.

I had been hoping that I could leave the micas alone, but after I read some old posts on the subject, I guess I'll replace them, too.

The radio plays well and is sensitive on all bands, so I might take my time getting to this chore. With replacing rubber wires and figuring out what to do with an open push-button coil, I have plenty to keep me busy!

Thanks for your help.

John Honeycutt


Messages In This Thread
Molded paper capacitors - by Raleigh - 06-20-2007, 01:24 PM
[No subject] - by Chuck Schwark - 06-20-2007, 01:40 PM
[No subject] - by Raleigh - 06-20-2007, 01:56 PM
[No subject] - by Raleigh - 06-20-2007, 11:50 PM
[No subject] - by Poston Drake - 07-02-2007, 10:16 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
American Bosch Model 802 auto radio
Hello again;   I found a model 838 car radio on Nostalgia Air under United American Bosch, http://www.nostalgiaair.org/...Arran — 09:32 PM
New Philco Repair Bench
Morzh is correct. The repair bench on our website is an archived image of chuck’s original site. He no longer provides s...klondike98 — 05:32 PM
Made mistake & did not label connection
Excellent information. It is all starting to come together now and your explanation really helped since I noticed that ...georgetownjohn — 04:39 PM
Made mistake & did not label connection
Hi John, I don't have this radio, but I can supply some info: Based on your pic, pins 7,8 and 1 are used together, go...MrFixr55 — 02:02 PM
New Philco Repair Bench
As far as I know, the Repairbench does not work, and has not been working in a while. Chuck (we had that campaign looki...morzh — 01:33 PM
Radio city products 664 schematic request
Need a schematic or manual for the 664. The 663 may be similar.daveone23 — 12:38 PM
New Philco Repair Bench
Thanks Gary.dconant — 12:16 PM
New Philco Repair Bench
I tried accessing the site through our library and got the same response. It's reported to our tech gurus. GaryGarySP — 11:50 AM
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

[-]
Who's Online
There are currently 4247 online users. [Complete List]
» 1 Member(s) | 4246 Guest(s)
Avatar

>