1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration

Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Linear Mode
50-925 no FM
Radioroslyn
Phorum Expert
*****
Posts: 7,301
Threads: 269
Joined: Dec 2009
City: Roslyn Pa
#7

04-01-2015, 10:49 PM
Sorry to hear your HP died nice piece of gear. As mentioned the 12BA6 is the RF amp for the FM only. AM has no RF amp. Double check the the plate, screen, and cathode voltages at the 12BA6. Also do you have 135vdc at the cathode of the rectifier and the junction of the input filter condenser to B-?( across the input condenser)
Terry
Find
« Next Oldest | Next Newest »
Thread Closed


Messages In This Thread
50-925 no FM - by Eric Adams - 03-31-2015, 10:28 PM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 06:38 AM
RE: 50-925 no FM - by Eric Adams - 04-01-2015, 11:10 AM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 09:01 PM
RE: 50-925 no FM - by David - 04-01-2015, 09:10 PM
RE: 50-925 no FM - by Eric Adams - 04-01-2015, 09:42 PM
RE: 50-925 no FM - by Radioroslyn - 04-01-2015, 10:49 PM



Users browsing this thread:
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM

[-]
Who's Online
There are currently no members online.

>
  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration