1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Linear Mode
Troubleshooting Open Coils - Philco 84B
bdi1976
Member
***
Posts: 82
Threads: 14
Joined: Mar 2014
City: Philadelphia, PA
#1

04-10-2014, 11:14 AM
Hi fellow members-
I am new to radio restoration but have been quickly learning about the process (although I have restored a couple of cars). I purchased a Philco 84B as my first project and am currently replacing the caps, resistors, and bakelites. I am slightly confused about troubleshooting the coils. For the oscillator and antenna coils, I get very low resistance values (2-8 Ohms) while checking continuity. I cannot locate the theoretical values and am hoping these are high enough values to indicate working coils(??)...does anyone know where can I locate these values for an 84? Also, the voice coil and output transformer shows OL so they appear dead. How do you guys figure out if these are good or need rewinding if you get values which are not OL or very high? Should I just assume they are OK and proceed with the rebuild? Thanks for your help-
-The schematic is attached
bdi


Attached Files
.pdf Philco84B Schematic.pdf Size: 107.45 KB  Downloads: 229
Find
« Next Oldest | Next Newest »


Messages In This Thread
Troubleshooting Open Coils - Philco 84B - by bdi1976 - 04-10-2014, 11:14 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 38-7 Speaker
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 — 05:34 PM
Philco 42-390, code 121 speaker
>>A closer examination of the very small print schematic indicates that the speaker is a PM type. This shows a ...morzh — 05:18 PM
Philco 60 Squealing
Litz is typically tinned by simply rubbing it with the soldering iron tip while immersed in solder (and a bit of rosin f...morzh — 05:14 PM
Philco 6K7
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND. I am not ...morzh — 05:10 PM
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM
Philco 16B Parts
Hi Dan, Mike is correct, there's a lot of painted stuff on the chassis but it looks pretty good. The sm is all there,sp...Radioroslyn — 03:50 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A...captainclock1988 — 03:43 PM
Philco 42-390, code 121 speaker
Using a 5W  1.5k  ceramic resistor in place of the field coil and using a 4 ohm PM speaker, I was able to bring the radi...Stevelog — 02:57 PM
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM
Philco 6K7
I am restoring a Philco 37-60. The am reception is very good, but the shortwave is very weak. Run 6 Philco removes the g...bobbyd1200 — 01:35 PM

[-]
Who's Online
There are currently 4735 online users. [Complete List]
» 4 Member(s) | 4731 Guest(s)
AvatarAvatarAvatarAvatar

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