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 41-290 Chassis: Any Cautions?
#1

Hi! I just acquired a 41-290 console with an excellent-plus cabinet (yea!), dial group and grille cloth. Chassis (121) and speaker now have been removed and ready for refurbishment. Are there any major issues I should specifically look for or be very wary about that are/may be specific to this particular 10 tube chassis? Thanks! Frank
#2

Hello Pol-Cat. The major-issue with these particular yrs (WW2) era radios was the orig rubber-coated wiring. Most are always brittle & crumbly, so it is usually necessary to either replace some if not all of the point-to-point wiring, or cut one end loose, & re-sleeve the orig wires with heat-shrink tubing. If the power trans leads are brittle, can pose a serious high-voltage short to chassis & can be dangerous! Check to make sure none of your trans wires are shorted together, or to chassis! If necessary, you can either color-code,or mark numbers on all the trans wires, and remove the trans to re-sleeve all the wires then reinstall it. Replace all your electrolytic capacitors, & bypass caps, check all your tube filaments for continuity,tube pins and sockets cleaned best you can, then you will be ready for a test using a short pc of antenna wire.
Hopefully, you have a variac, so you can power the set up slowly after full electronic restoration. The power trans shouldnt draw more than about 1 ampere max, if everything is correct after restoration, & your orig rectifier tube isnt shorted internally. Have you serviced vintage radios before,.or is this your first attempt? In either case, theres plenty good folks here to help if needed! Best of luck restoring your vintage Philco! Icon_wink
#3

I certainly do not mean to dissuade you, Pol-Cat, but that radio and its siblings, the 41-250/255/280/285/287, are (in my opinion) the hardest radios to restore that Philco ever made. Tex has already mentioned the rubber-covered wiring. That is what makes this radio so difficult. Beware the wires going to the band switch! Nearly ALL of them are rubber-covered, and if you are not very careful, you could break the band switch! Don't ask me how I know. Icon_evil

But good luck to you and hopefully it will all work out well. Just take your time, don't take any shortcuts or get in a hurry, and please feel free to ask us here if you run into any problems.

--
Ron Ramirez
Ferdinand IN




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
PT 6 chassis screws size???
Hello bridKarl, that sounds right or maybe 8/32 . Sincerely Richardradiorich — 01:00 AM
PT 6 chassis screws size???
Have this done except for missing chassis screws. It looks like 1 inch 6/32 sheet metal screw may work but can anyone s...bridkarl — 10:32 PM
Philco model 38 code 121 not receiving signal.
Hello Stormlord, Well done on rewinding that coil it turned fairly good for your first one. Sincerely Richardradiorich — 09:12 PM
Philco model 38 code 121 not receiving signal.
Well here it is. It ain't pretty, but hopefully it'll work. I checked it with my DMM on continuity and it keeps and r...Stormlord5500 — 08:56 PM
Philco 42-345 Restoration/Repair
Yes, 57 is an electrolytic cap that should be 12 mfd 400 volts according to the parts list from the Phorum library schem...RodB — 06:01 PM
Philco 42-345 Restoration/Repair
Looks like if I am reading it correctly it looks like the silver capacitor#57 that appears to be a replacement is of a l...osanders0311 — 05:09 PM
Philco model 38 code 121 not receiving signal.
Thanks Arran. Yeah this plastic is pretty thin. It's a little thinner than the original stuff. It kinda reminds me of p...Stormlord5500 — 04:37 PM
Testing a speaker and output transformer Trutone A2-G
The equivalent of one short turn is basically the same as that of a shorted load. If it is the primary's turn, then the ...morzh — 03:53 PM
Testing a speaker and output transformer Trutone A2-G
I've never had an output transformer become shorted, the failure mode is usually an open primary, or in a center tapped ...Arran — 03:52 PM
Philco model 38 code 121 not receiving signal.
As long as the plastic sheeting isn't too thick, I think that the thickness of photographic film would be just about rig...Arran — 03:19 PM

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

>