Philco model 18 (code 121) - HELP!
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Pith, something is wrong with your measuring. The only measurements that were somewhat close are the filaments (A/C). All DC measurements (the balance of them) are sky high! Of interest are the cathode to ground measurements on the 42s for example. These set at chassis ground and yet your getting 2.8V on them. Not possible. As a question, are you measuring these tube voltages with the tubes in? Obviously the 80 rectifier was in to provide DC voltage. Note in your voltage chart that the chart is based on measurements from the cathode as the minus point for the meter, not chassis ground.
Spot try a few measurements again and see how they compare to your original posting above. Your obtaining some high voltage readings that the power supply is incapable of making under load.
Jerry
A friend in need is a pest! Bill Slee ca 1970.
Messages In This Thread
RE: Philco model 18 (code 121) - HELP! - by jerryhawthorne - 04-22-2013, 02:16 PM
Users browsing this thread: 6 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 852 online users. [Complete List] » 1 Member(s) | 851 Guest(s)
|
|
|

|