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

Help to id Philco condenser block
#16

BTW, has anyone had success in cleaning the volume pots on these. I have a small amount of "scratchiness" which I'd like to eliminate, but the pot seems pretty well sealed. If it's a risky job, I'll just leave it as is.


Unsolder, pry up the 6 tabs on the front. Gently pull it apart. Spray inside with Deoxit(best but some guys use WD-40 )with good results. Reassemble with care that the tab that flips the off/on switch is in the proper position. Resolder and enjoy! If that doesn't fix it you have a worn spot in the resistance film inside the pot. This will require replacement to correct the problem.
Isn't radio repair fun!!!!
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
#17

Kiko, hi again. I have had bad luck trying to clean the Philco pots. On one I used a commercial contact cleaner and it disolved the resistance track. It may have been and odd circumstance but I'm leery with them. PL
#18

7estatdef Wrote:BTW, has anyone had success in cleaning the volume pots on these. I have a small amount of "scratchiness" which I'd like to eliminate, but the pot seems pretty well sealed. If it's a risky job, I'll just leave it as is.


Unsolder, pry up the 6 tabs on the front. Gently pull it apart. Spray inside with Deoxit(best but some guys use WD-40 )with good results. Reassemble with care that the tab that flips the off/on switch is in the proper position. Resolder and enjoy! If that doesn't fix it you have a worn spot in the resistance film inside the pot. This will require replacement to correct the problem.
Isn't radio repair fun!!!!
Terry
planigan Wrote:Kiko, hi again. I have had bad luck trying to clean the Philco pots. On one I used a commercial contact cleaner and it disolved the resistance track. It may have been and odd circumstance but I'm leery with them. PL


Well, I got the pot cleaned!

Leery about disassembling and reassembling with out damage, I removed it from the chassis and found a small hole on the front the pot with what looked like a hollow brass rivet. I gave it a couple of good squirts with NAPA electronic cleaner (used this for several years and it seems to work well and it's cheaper than most others) worked it back and forth about 25 times or so and then repeated and let dry overnight...and presto, I have a clean pot with all the "scratchiness" gone and better volume too.

Yep, radio repair is fun...when you can look back at your success. However, it sometimes can be really frustrating...before you get to that point! Thanks again guys, this forum is always a great help to those of us who are "electronically challenged" and still learning.

Best regards,
Kico

"I whisper, but my horse still doesn't listen."




Users browsing this thread: 1 Guest(s)
[-]
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.

>