Faulty capacitors.

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Tue Nov 5 18:36:00 2002

> To: cctalk_at_classiccmp.org
> Subject: Re: Faulty capacitors.
> From: Stan Barr <stanb_at_dial.pipex.com>
> Reply-to: cctalk_at_classiccmp.org
> Date: Tue, 05 Nov 2002 09:02:14 +0000

> Hi,
>
> Brian Chase <vaxzilla_at_jarai.org> said:
> This is a well known problem among TV repairmen (my brother is one).
> Early failure of electroytics is becoming increasingly common. I've
> had to replace about half of them in my vcr power supply and it's only
> 5 years old! OTOH I'm using a 40-year old radio where they are still
> in good order...
> Early tantalums are another problem area. If one goes, replace them
> all.

Count me in, newly minted tv repairman and already have to replace so
many caps.

Usually that vertical retrace cap.

Otherwise any caps that had water broiled out (baked) from crowded
hot sources. But especially in CTC169 (RCA), two small ones next to
SMPS IC MUST be replaced no matter otherwise fly or HV divider fry
because of B+ overvolting as well as diode. Inexpensive insurance.

Then few remaining is simply bad quality, like leakers and load of
dud mitsubishi pip modules. Easy fix, remove & bypass with two caps.
Most people don't use pip or can stand losing it for less cost.
Mitsubishi sets are one of good ones.

Years ago, I did four recapping Asus P2L97 boards same kind of both
burst tops and popped rubber plug.

Cheers,

Wizard

>
> --
> Cheers,
> Stan Barr stanb_at_dial.pipex.com
>
> The future was never like this!
>
>
>
Received on Tue Nov 05 2002 - 18:36:00 GMT