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

Philco 46-1203
#16

It doesn't matter. If the value is small and you can omit using electrolytics, do so - electrolytic caps are a limited life part.
But if you do use them, observe the polarity.
#17

Thanks Skyscraper. The caps in question are 10MF and 40MF. Due to their higher value, would it be okay to use an electrolytic? Which would be better?

Here is the schematic and diagram: http://s270.photobucket.com/user/Colorad...ent&page=1
#18

Those have to be electrolytics I think. I also think it is a doubling rectifier so the voltage ratings you use have to be about 350V. That is 250V DC will not be exceeded if the load is disconnected (hence the 350V rating to have margin) and normally it is lower (175/110V for 40uF and 10uF respectively) but this is if the load is OK.

So, use electrolytics 40uF and 10uF 350V.
#19

Thanks to everyone for their assistance. The 60hz hum is now gone and the radio sounds pretty good for having the original (from what I can tell) speaker. Now on to the record player portion of the unit.
#20

The cap with the wire wrapped around it is a crude LC circuit intended to make the chassis have a low impedance connection to the radio B- supply line at the IF or RF frequencies, but have the impedance be somewhat high at 60Hz. Radio could oscillate without it. You could carefully slide the coiled wire off the old cap, keeping the turns spacing the same, and putting the coil over a new cap.
[Image: http://www.philcoradio.com/phorum/attach...p?aid=2757]




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 no members online.

>