New Capacitors Failing while still in the parts drawer........

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Janitor Tzap
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New Capacitors Failing while still in the parts drawer........

Post by Janitor Tzap »

This is strange issue.

I'm working on a old RCA 14" flat screen CRT set.
In the vertical section, I find a few Capacitors that have failed.
So, I go to my Parts Drawers to get new ones to replace them.
Here I find several electrolytic radial caps that are leaking a yellow oil out the bottom where the leads are.
These capacitors don't have any sort manufacturer marking I recognize: NRWA made in Japan.
I purchased these a just few years ago, and I have much older {New Old Stock} Caps, that are just fine.
I know they are not designed to last forever, but this is taking planned obsolescence to another level.


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dyarker
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Location: Izmir, Turkiye; from Rochester, NY
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Re: New Capacitors Failing while still in the parts drawer........

Post by dyarker »

Electrolytic caps need reforming after long idle. Though never heard of leaking in storage. The problem usually shows applying full working voltage to a cap not used for a time, then it has no capacitance or internal short.

Cheers,
Dale Y
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