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
41-240 Power Transformer
Radioroslyn
Phorum Expert
*****
Posts: 7,286
Threads: 268
Joined: Dec 2009
City: Roslyn Pa
#6

10-23-2016, 09:31 PM
I'd pull the 7Y4. Turn it on. Does the pilot lamp light? Is it's brightness correct, not dim? Check rubber filament wiring for shorts. If you leave it on for 5 or 10min does the transformer smoke or get hot to the touch? Has the transformer lost wax out of the bottom and smell burnt. Measure the HV and filament winding for proper voltage without the voltage fluctuation.

If it has any of these issues I'd look for a new one.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
Find
« Next Oldest | Next Newest »


Messages In This Thread
41-240 Power Transformer - by ccbaker13 - 10-23-2016, 04:11 PM
RE: 41-240 Power Transformer - by ccbaker13 - 10-23-2016, 08:42 PM
RE: 41-240 Power Transformer - by klondike98 - 10-23-2016, 09:04 PM
RE: 41-240 Power Transformer - by Radioroslyn - 10-23-2016, 09:31 PM
RE: 41-240 Power Transformer - by ccbaker13 - 10-24-2016, 07:13 AM
RE: 41-240 Power Transformer - by ccbaker13 - 10-24-2016, 09:34 PM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
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
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.  2A5...MrFixr55 — 06:48 AM
American Bosch Model 802 auto radio
I think it would come under either American Bosch or United American Bosch. American Bosch made sets for the American We...Arran — 05:53 AM
trying to identify this wire type
Thanks to all for the feedback. As Arran said, it is probably an older replacement and yes it has a grid cap so I will ...georgetownjohn — 09:32 PM
trying to identify this wire type
It's possible that the red wire, actually a grid cap lead, is a very old replacement, I can't remember seeing a pre 1939...Arran — 09:18 PM

[-]
Who's Online
There are currently 6064 online users. [Complete List]
» 2 Member(s) | 6062 Guest(s)
AvatarAvatar

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