Quick Tech Tip Silver Mica Disease Repair 

Thanks for the video. Great job. On a side note I've seen what I think is a similar contamination on modern smd components caused by SO2 on silver. I worked in a modern paper mill that used gaseous SO2 for bleaching the pulp. Older equipment was not affected but newer lead free devices became intermittent and failed. The SO2 would react with the silver layers and cause a insulation layer to form.

Repairing these IF's for SMD is a pain for sure. Good video.

Thinking it would be better to solder those to the bottom of the connectors after it is reinstalled. Just a thought. Excellent video thanks for showing us how.

Nice video! Subscribed.

I've not had silver mica disease inside IF cans yet, but I have had a variable capacitor with it. I've only been repairing valve radios as a hobby for 3 years (although I was qualified as a radio and TV engineer 40 years ago). So I've probably not seen enough of them yet.

Too much heat can be your enemy but, flux can be your best friend. I've found if you've got the shakes try a sandwich. It pains me to say that cause I'd rather be working, but working hangry is counter productive. Nice job.

Excellent tutorial repair and check.

Thank you for the valuable information It’s really useful to me

Also see: *Jim Burns,* he really tares them down. I keep plenty of 100pF CAPs around just for this problem. In frame, in frame! It starts arching.

How do you determine the value to use of the schematic doesn’t tell you

Why not use a surface mount cap as opposed to a leaded mica cap?

How did you figure out the capacitor spec?

I would never get a prying tool. My luck i would snap the 70 year old plastic of the transformer. Might as well just throw the radio into the wall.

Half the video is done completely out of the frame of the camera. No thumbs up on this one.