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

Philco 50-520 Fixing Silver Mica Disease
#1

Hello,

Thank you for accepting me on this forum. I am new to radio restoration and need help with rewiring an IF can. On the Z300 IF can, I took out the mica caps and added 2 new mica caps under the chassis. Pretty straightforward. On Z301 IF can, there are 4 mica caps and 6 lugs. I removed the old mica and put the can back in place. I know I need a new cap across lugs 1 and 2 and one across lugs 3 and 4. On the other 2 caps, i have been told to put one from lug 2 to pin 7 of the 14B6 and another one from pin 7 to the volume control lug on the potentiometer.  My question is do I leave the wires that were attached to lugs 5 and 6 unattached? Also do I need to relocate R302 which goes from lug 2 to lug 6 on the can? I am not good yet at reading schematics and would like to make sure everything is attached to the correct physical location. Here is a link to the schematics: http://www.nostalgiaair.org/pagesbymodel...013691.pdf

Thank you and I look forward to being a part of this forum!
#2

Hi and welcome,
I would rewire it so that c-302c and d so that they external. This make life easier to sort. I'm not sure if these two cap are located w/the ones that have the migration issue. If it is then both need to be removed caps as there is some likelihood that maybe some electrical leakage. This can cause popping sounds and or the volume to play louder and softer all by it's self.
GL

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
#3

All the caps were stacked together inside the can and I removed them all. The can is back in place and I just need to attach everything and put the new caps under the can.

Thank you,




Users browsing this thread:
[-]
Recent Posts
Correct model 84 Ac plug an cord type
From what I read Philco went to using brown rubber power cords in 1936, so cloth was used in the 1935 and earlier models...Arran — 11:25 PM
Correct model 84 Ac plug an cord type
Hi Bruce, I have not worked on an 84, but in general, power cords for almost any radio prior to 1938 was cloth covered...MrFixr55 — 08:34 PM
Restoring Philco 38-14
OK, well, so after staring at the sch again, I realized the problem had to be the #12/12A padder. I put a scope on the o...morzh — 08:15 PM
Correct model 84 Ac plug an cord type
Hello Bruce, I mostly use brown far as my cloth powercords go ! Here is the plug that I have used bakelite Acorn style...radiorich — 08:05 PM
Correct model 84 Ac plug an cord type
Looking for as correct as can find the right Ac plug an the correct colored cloth line. Ive seen many old photos but mos...Bruce — 04:13 PM
Restoring Philco 38-14
Rod Two Y-caps make sense if you use them from L/N to the chassis; this is only makes sense in the transformer radios...morzh — 10:11 AM
Restoring Philco 38-14
Mike, I'm curious about a specific use of he Y cap. Lately I've seen a single cap across the power transformer primary. ...RodB — 09:01 AM
Restoring Philco 38-14
hello morzh , That sounds like a plan ! Sincerely Richardradiorich — 07:45 AM
Restoring Philco 38-14
Richard, It helped some, but I still had the whining when engaging the rear power strip (I did not realize it was fro...morzh — 07:07 AM
Restoring Philco 38-14
Hello morzh, Yes , that dreaded hum in my room where i do alighment I have my cable modem and router plus desktop plus ...radiorich — 11:25 PM

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

>