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

Philco 38-4 My first try at radio restoration
#1

Hello Philco Phorum; I'm new to radio repair and this forum, but from what i have been reading this seems like a great place to hang out. I have become the proud owner of a handsome Philco 38-4 floor model. After i started to t/s i believe the P/T is bad. I'm working off the schematic posted on nastalgia air web site trying to put together the specs. for the transformer but i think its over my head. It lists ohm readings for the windings only i dont see a high voltage output value. I would also need its current capacity for output windings in order to find a replacement. I have located a P/T from a Philco model 38-1 but its for a 12 tube chassis, the 38-4 is 8 tubes. It is much larger physically but would it work electrically? If not what be the best way to find a suitable power transformer so a get this radio to play again. Thanks Ed
#2

Will I think the first thing to do is pull the 5Y4 and measure between pins 3 and 5 you should have about 600v ac. If you do then your power transformer more than likely OK. If not you will be looking for a power transformer. What you will need to replace it is 120v primary Secondaries HV 600 to 650vac ct @ 90ma 6.3vac @3a 5v@2a. That will give you 250-300vdc.
Terry

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




Users browsing this thread:
[-]
Recent Posts
Philco Model 38-7: what caps & resistors do fail typically?
Hello Martin, Welcome aboard our little community what great Model 38-7 Sincerely Richardradiorich — 12:30 AM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum Martin. I count about 9 paper caps, the 3 electrolytic caps and 2-Y2 safety caps to replace th...RodB — 09:44 PM
Part numbers to model cross
Jim, We have this index put together by Dale Cook but I don't think that is quite what you are looking for. The Parts...klondike98 — 09:37 PM
Philco Model 38-7: what caps & resistors do fail typically?
Yep the dim bulb test is OK but I'd definitely replace all those electrolytics before I did it. Since those #47 conden...klondike98 — 09:18 PM
Philco 42-345 Restoration/Repair
The resistor is a 2.2 Meg, it was the last one I hadn't replaced. The broadcast is coming in after replacing it.osanders0311 — 09:09 PM
Philco 42-345 Restoration/Repair
What does the resistor measure? I think it should be 3.3 Meg. If the oscillator coil has continuity and the resistanc...RodB — 09:03 PM
Philco Model 38-7: what caps & resistors do fail typically?
Good idea to check the coils... then I'll get hold of an incadescent light bulb and see what happens when the unit is sw...Musaeum — 08:49 PM
Philco 42-345 Restoration/Repair
I have that same set, ain't too much shortwave I like anyway.....it is a good AM DX set. PaulPaul Philco322 — 08:32 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum, Martin! Open a new thread in Philco Electronic Restoration when you begin working on your 38-7. ...GarySP — 08:28 PM
Philco Model 38-7: what caps & resistors do fail typically?
Welcome to the Phorum! :wave: Here's the schematic for that radio from our digital library: Something to do bef...klondike98 — 08:05 PM

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

>