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

New Philco 41-225
#11

WWIIRadio, where did they put the toggle switch? Did they drill the cabinet to mount it, or was it on the chassis? I have a 41-280 with a toggle switch on the back of the chassis, so before I fixed it you had to reach behind the radio and feel around for the switch to turn it on. That was annoying.

I'm working on a 41-255 now. It's one that has a lot of miles on it. There are several screw holes drilled in the chassis where there aren't normally holes, maybe for modifications or repairs that have since been removed. Most of the tubes are replacements. The 41 and 84 tubes are not the ST type and are various brands other than Philco, so I conclude that it has been played, repaired, and tinkered with a lot.

Both the power switch and the output transformer were bad. I replaced the output transformer with a Hammond 125B. In retrospect, I think I'd use a 125C if I did it again because the "B" has six secondary wires, 4 of will be unused. I'll probably cut them off, but for now they are a nuisance. I think I'll probably use #1 and #3, but I don't want to cut them off until I have a chance to test that those are the best choice.

All the other 125 series transformers have solder lugs for the secondaries, which eliminates the admittedly minor irritation of the six secondary wires.

I repaired the on-off switch simply by drilling out the rivets, cleaning the contacts with steel wool and then reassembling with self-tapping screws. De-oxit without dis-assembly might have worked as well, but I didn't think of that until too late. Next time.

John Honeycutt


Messages In This Thread
New Philco 41-225 - by WWIIRadio - 09-13-2015, 09:41 PM
RE: New Philco 41-225 - by morzh - 09-14-2015, 11:31 AM
RE: New Philco 41-225 - by Steve Davis - 09-14-2015, 12:07 PM
RE: New Philco 41-225 - by klondike98 - 09-14-2015, 01:04 PM
RE: New Philco 41-225 - by WWIIRadio - 09-14-2015, 04:16 PM
RE: New Philco 41-225 - by klondike98 - 09-14-2015, 05:19 PM
RE: New Philco 41-225 - by codefox1 - 09-14-2015, 06:58 PM
RE: New Philco 41-225 - by WWIIRadio - 09-14-2015, 07:05 PM
RE: New Philco 41-225 - by Raleigh - 09-14-2015, 10:11 PM
RE: New Philco 41-225 - by WWIIRadio - 09-14-2015, 10:32 PM
RE: New Philco 41-225 - by Raleigh - 09-15-2015, 03:14 PM
RE: New Philco 41-225 - by WWIIRadio - 09-15-2015, 03:41 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Value of capacitor
OP is "original poster"klondike98 — 11:05 PM
Value of capacitor
What is an OP?  Looks like the “OP” mistakenly typed electrolytic.  Lets forgive him.Joe Rossi — 06:31 PM
Another amp build - here I go again!
How many amps a man can have? I say, as many as the space can hold.morzh — 10:01 AM
Value of capacitor
>>>It currently has an .005 1000 volt electrolytic that is at least 40 years old. That needs to go. There i...morzh — 10:00 AM
One irritating little amp - VM 557
The VM amps were kinda weird, but as you say, they did work well until they didn't. I just got a bag full of new tube so...TV MAN — 08:56 AM
Another amp build - here I go again!
I have a pair of Mk3 Dynas and they always sounded great with plenty of punch. 6550 is the same as a KT88 except usually...TV MAN — 08:45 AM
philco predicta
As Mr. Fix says, this is a live chassis so without an isolation transformer, it can be dangerous to work on. There's goo...TV MAN — 08:33 AM
Value of capacitor
If this helps you sort it out just remember 10,000 mmfd or pf = .01 mfd. So 5,000mmfd = .005 mfd.Radioroslyn — 04:23 PM
Value of capacitor
OP here- the parts list calls for an .005 1000 volt mica. It currently has an .005 1000 volt electrolytic that is at lea...bridkarl — 02:09 PM
Value of capacitor
Maybe it's one of those paper caps that is wrapped in a mica-lookiing case.RodB — 01:51 PM

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

>