Philco model 18 (code 121) - HELP!
Posts: 1,562
Threads: 56
Joined: Nov 2008
City: Sedona, AZ/Placentia/CA
Sorry Pith but I guess I wasn't clear on the measurement across the two e-caps, I was looking for resistance. Might be easier to check from each to ground for some high DC voltages (power on). If you get good HV on the first one but nada on the second, it certainly looks like the choke has gone bye-bye. If you use the resistance scale at the same points as previously listed, across the + of the two caps (power off) you should get the value that Brenda suggested for a replacement resistor.
Your voltage measurement on the plate of the 78 certainly points to the choke being open.
Regards, 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 - 07-30-2013, 11:31 PM
Users browsing this thread: 30 Guest(s)
|
Recent Posts
|
Philco 16B Parts
|
The 16B's in the tombstone cabinet sport a 10 1/2" spkr vs the older cathedral sets which uses an 8". The p/p ...Radioroslyn — 12:58 AM |
Philco 38-7 Oscillation
|
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 11:16 PM |
Philco 38-7 Speaker
|
I know that when I first started working on this radio, I did not even have a speaker. Once I finally found one it was n...tludka — 11:00 PM |
Philco 60 Squealing
|
I seem to remember eliminating a squeal by changing the IF frequency by a few KHz. Not that you should put too much tru...fenbach — 08:48 PM |
Philco 42-390, code 121 speaker
|
These speakers pop up on eBay regularly, even if at bloated prices.
Honestly, have not seen many parts on swapmeets.morzh — 08:38 PM |
Philco 38-7 Speaker
|
The put-put is not like the speaker problem.morzh — 08:29 PM |
Mission Bell Model 19A Car Radio
|
Hello everyone,
As mentioned in my last post I was going to see if the vibrator / rectifier section could be persuaded...Antipodal — 08:21 PM |
Philco 60 Squealing
|
Wondering if I did it backwards.
If a coil was wound backwards, the oscillator would not work at all.
Old school...Chas — 07:23 PM |
Philco 38-7 Speaker
|
4-ohm speaker. Black, Green leads.tludka — 07:00 PM |
Philco 42-390, code 121 speaker
|
#87 on the schematic.
This radio had a 8" Zenith speaker attached to it when I got it. I do don't know the hist...Stevelog — 06:39 PM |
Who's Online
|
There are currently no members online. |
|
|