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

116b Micamold capacitors
#1

I am working on a 116b, shouldered cabinet early version. The micamold caps are listed as micas. Four of them I pulled and tested are all leaking. The Cornell Dubilier caps check ok. I am wondering if they are really paper and if I broke one open could I identify which material was used?
Thanks Hank
#2

I have taken a cap and cut in half to see what it looked like inside. Paper caps  lots of layers of foil and wax paper and more wax. Think about the age of the set, do you want to trust caps that old to work for another 10 or 20 years. Myself I want to fix them once, good quality caps should out last all of us on the Phorum. Good Luck with your project. David
#3

Hi David.  Caps and carbon are the least expensive components to replace, and should not be relied upon just because they seems to be good.  REPLACE THEM.  That includes the Micamold picofarad caps as well. Take care, Gary

"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan
#4

If they are below 1000pf (.001) odds are pretty good that they were mica. That doesn't make them 'good', though! They are rather fragile now and twisting them on their leads to see the other side and messing with them in general often finishes them off. If they were paper then consider them 'done for' anyway, regardless of brand.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco model 38 code 121 not receiving signal.
Thank you sir. Yes I feel good and also relieved because this one's been weighing on me a bit.Stormlord5500 — 11:18 AM
Philco model 38 code 121 not receiving signal.
It feels good don't it? Good luck on the rest.Paul Philco322 — 11:06 AM
Philco model 38 code 121 not receiving signal.
I've reinstalled the coil. Now IT'S ALIVE!!!!!! I fired up my TinySA on signal generator mode and set it to 1400Kc and ...Stormlord5500 — 11:01 AM
Philco model 38 code 121 not receiving signal.
Yes, Walmart, right up there with Fluke.RodB — 11:00 AM
PT 6 chassis screws size???
it certainly won't be metric! SAE threads were all that was known then. Take care, - GaryGarySP — 10:58 AM
Philco model 38 code 121 not receiving signal.
I think this thing is way more accurate than my Walmart DMM. :DStormlord5500 — 08:19 AM
Philco model 38 code 121 not receiving signal.
Thankyou for the kind words sir. I double checked it with my component tester and it read 2.7 ohms at .02mH.Stormlord5500 — 08:14 AM
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

[-]
Who's Online
There are currently 865 online users. [Complete List]
» 2 Member(s) | 863 Guest(s)
AvatarAvatar

>