Quote:
Originally Posted by Electronic M
Only lytics and IIRC Tantalums are polarized.
.the flyback doesn't need replaced it just needs recoating with wax, tar, corona dope or sensor safe RTV (which one is a matter of personal preference).
The positive grounded lytic probably filters a negative voltage rail.
Don't replace paper caps with ceramics in TVs, ceramics aren't stable enough for video and sweep applications that originally called for paper.
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Thank you for the info, I'll keep that in mind. I didn't know that about ceramics.
I'll pickup some blue sensor safe RTV from the store this weekend.
Out of the TV Chassis capacitors I replaced so far:
13 replaced with Film caps
1 with a Lyitic
2 with
Mica (Hard to find value & tolerance) -
Mica seems to be okay? - From what I can find online its not considered a ceramic.
.0039 uF @ 200v +/- 10% (
Part of the Horizontal Hold Circuit)
.0051 uF @ 400v +/- 5% (
Sits between the Sync Phase inv & AGC Clamper)