Philco model 18 (code 121) - HELP!
Posts: 4,867
Threads: 54
Joined: Sep 2008
City: Sandwick, BC, CA
The other electrolytic can, the one under the chassis, can be replaced by three poly film caps if desired as they are small values. Whether they would fit inside the original can is another story but they are available and will survive much longer then replacement electrolytic caps. They can be purchased from Radio Daze and Mauser.
With regards to a positive side going to ground this is something to be careful with, there are some filter caps that have a common positive with two negative sides where a bias resistor network and speaker field coil will be connected in series with the negative side, the field coil acts as a filter choke and the resistors as a bias voltage divider.
Regards
Arran
(This post was last modified: 02-08-2013, 10:56 PM by Arran.)
Messages In This Thread
RE: Philco model 18 (code 121) - HELP! - by Arran - 02-08-2013, 10:49 PM
Users browsing this thread: 4 Guest(s)
|
Recent Posts
|
Need Help to ID this radio 11 tube Philco
|
I did R73 RCA. It has a phenolic board with all stuff mounted on it.
And the wiring is deep under everything including ...morzh — 10:37 AM |
48-482 rear panel help
|
Hi Keith, here is an article that covers different FM detector circuits including a section on the theory and alignment ...462ron — 08:26 AM |
462ron
|
Well then Dan I guess this old man’s memory wasn’t too foggy :lolno: although I couldn’t remember where I saw that upgra...462ron — 08:08 AM |
Need Help to ID this radio 11 tube Philco
|
Fortunately, I did not have to do much to my GE S-22 (RCA R7A) Almost all caps and the 2 audio transformers packed into...MrFixr55 — 07:44 AM |
48-482 rear panel help
|
Yup Arran is correct it is missing the pushbutton covers. I don't know where they all go but it's a common issue on this...Radioroslyn — 06:48 AM |
48-482 rear panel help
|
I also have one of these, again it never had a back, and no trace of one. I have been told that the pushbuttons used to ...Arran — 03:29 AM |
48-482 rear panel help
|
Thanks Joseph. Hope you get to restore your 48-482 before too long!keithchip — 02:12 AM |
Need Help to ID this radio 11 tube Philco
|
RCAs ain't no cake either.morzh — 10:32 PM |
Philco 46-480 Electronic Restoration
|
After a couple of days worth of troubleshooting my signal generator, I gave up. The oscilloscope still worked fine, so I...jrblasde — 09:51 PM |
48-482 rear panel help
|
Yes, I can confirm. I bought one (haven’t restored it yet) which didn’t have a back panel.jrblasde — 09:37 PM |
Who's Online
|
There are currently no members online. |
|

|