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 77 Resistor
#1

Greetings everyone!

I recently was given a Philco Model 77.  Cabinet is in great shape, almost looks new.  I am going to replace all of the capacitors and that shouldn't be too tough once I get past the tar.  My question is in regard to one of the wire wound tubular resistors.  The shorter one is a two-stage affair and the 800 ohm winding is open.  Looks like someone was into it before me and about half of the winding is missing, so even if I could re-connect, it would probably be the wrong value.  I was thinking about attaching a power resistor between the lugs and was wondering if 5 Watts would be sufficient, or if I should go higher?  The schematic makes reference to all resistors being 1 Watt, with the exception of the two wire wound jobs.  

I was also thinking about rewinding it, but not sure what type of wire I should use or where I may obtain it. 

Any advice would be appreciated.  

Thank you and regards,

George B. Reisdorf
#2

There is a thread on this from last year containing answers to your question about resistor wattage as well as other advice. You may find it useful: https://philcoradio.com/phorum/showthrea...t=Model+77
#3

Thank you mancave! Good information.

gbr




Users browsing this thread:
[-]
Recent Posts
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
Philco model 38 code 121 not receiving signal.
Well why not! :lol:Stormlord5500 — 03:14 PM
Philco model 38 code 121 not receiving signal.
Good luck next thing you know you will be winding coils just for the fun of it. DavidDavid — 11:29 AM
Testing a speaker and output transformer Trutone A2-G
morzh Short-circuited turns can be considered as a half-dead transformer. But on this case transformer will hot and s...Vlad95 — 11:01 AM
Testing a speaker and output transformer Trutone A2-G
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM

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

>