Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Rehab of a model 41-285 on-off push button switch
#1

The push button on-off switch so well known to the model 41's can be troublesome. Mine of course was no different on my 41-285, which was intermittent, and smoked after a few minutes of play. After reviewing earlier posts on this topic, I decided to try rehabing the switch first. I carefully drilled out both rivets, and cleaned out any metal shavings. Upon opening the switch, I found my intermittent problems were due to both wires working loose from their solder on the copper contacts! reinserting the contacts into the switch's housing, just keep enough solder on the back of the copper contact to hold, too much and the contacts will sit too high in the housing. Ever so gently, enlarge the existing rivet holes with the same drill bit, then slightly enlarge the mounting holes on the metal frame of where the switch was mounted. I had good luck with metal screws, (4x1/2) pan head phillips. The lower mounting hole where both wires enter, you can use the entire length of the screw, the hole nearest the spring assembly, you may have to back out until the push button engages and disengages with no resistance. You can also trim the end of the top screw and reinsert it until it fits flush, both methods seem to work equally well. So far the assembly has worked flawlessly, with no smoking and crisp response. I also used the opportunity to clean the contacts and lubricate them. We'll see how it holds up over the long term. Just thought another input on this problem may help someone. BOBC CINCINNATI, OHIO
#2

Thanks for the detailed description. I'll try using self-tapping screws on the next one I work on. I should be getting a 41-255 any day now.

John Honeycutt




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
Tim, nice write up and thanks for sharing !! Sincerely Richardradiorich — 02:47 AM
HiFi (Chifi) tube amp build - but my own design.
Well, this was a real "Hum-Dinger" :lol: ! This will be kinda long, but hopefully it will help others having t...TV MAN — 01:55 AM
Shadow Meter Bulb
Phorum members, I am trying to find the bulb # for PHILCO Shadow Meter part number 45-2180 that is from a 37-640 chassis...georgetownjohn — 06:53 PM
Philco 41-608 changer coupler
3D-printing...short of machining, of course. Or molding.morzh — 05:20 PM
Philco 41-608 changer coupler
Thanks, Morzh. That solves the issue of the rubber pieces. Now, I need to find a way to replicate the pot metal piec...alangard — 05:07 PM
12' Philco
If it is 12', either Kareem or Andre would have to jump pretty high to look at the front panel. Kareem would have an e...morzh — 01:48 PM
12' Philco
And here's a story about the tires on the truck. Same "no-stoop" guy must have installed these! Take care a...GarySP — 01:17 PM
Hickok AC51 tube tester
I think they have only shown the secondaries of the transformer. Two of them feed the rectifiers' filaments.morzh — 12:58 PM
IF can wire size and Rubber mounts?
Arran If the wire inside cans is the gauges you mentioned, the sole reason for that would be mechanical, to stiffen t...morzh — 12:56 PM
12' Philco
Rod, Yes, I know, but the Giant Philco is not around anymore either, so I go by whoever was alive fairly recently. H...morzh — 12:54 PM

[-]
Who's Online
There are currently 6120 online users. [Complete List]
» 1 Member(s) | 6119 Guest(s)
Avatar

>