February 19, 2020 at 6:56 am #13026
As I’m waiting for more parts to complete the mini Emerson I found, I can’t help but be amazed that these radios are still capable of functioning (sort of) with so many failed components.
I had 5 out of spec caps to replace and I’m waiting for the 2 for 1 double cap 30/50 MFD replacements to arrive. My background is German Car repair and had my own shop in Port Moody B.C.
I can’t think of an instance that a car could still function with as many flaws as these old radios develop with time. So far, this seems to be a very satisfying hobby. I do miss going to the Sparc
museum in Coquitlam! That place was uber cool. here’s a pic of my dead double cap which reads O.L. on my meter on both leads!
- This topic was modified 2 years, 5 months ago by garykuster.
Attachments:February 19, 2020 at 5:55 pm #13029Sterling SpurrellCVRS Member
What are you using to test your caps? Are you testing in circuit or out of circuit?February 20, 2020 at 6:38 am #13030
I have a Fluke meter to test the caps. On any old radio, the first thing i do is replace all the caps regardless. I compare the readings to a new replacement cap just to see how far off it had become for fun.
I test the old one (in this case a 0.05 cap) and compare the reading to a new 0.05 which unless defective, should of course be 0.05. Still a rookie, but learning.
The double cap that I’m waiting on parts for, tests as shorted on both the 30 and 50 MFD leads. It was in a clip to hold it and over the years, the clip kinda crushed the cap distorting it quite a bit, probably caused the complete failure of the cap. I unsolder one end of the cap to test it, but have not compared the readings to a cap in situ. Good thing to try next time.
- This reply was modified 2 years, 5 months ago by garykuster. Reason: Added pics
- This reply was modified 2 years, 5 months ago by garykuster.
Attachments:February 20, 2020 at 11:07 pm #13046Gary AlbachForum Participant
Hi Gary – You say ‘The double cap that I’m waiting on parts for, tests as shorted on both the 30 and 50 MFD leads.’ Why are you using an expensive double capacitor as an exact physical replacement instead of two inexpensive single caps (30uF and 50uF)?
Gary A.February 21, 2020 at 6:25 am #13047
Hi Gary, I am waiting for 2 separate caps to replace the double cap. I was imprecise in my last email.
Thanks, Gary K
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