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Default Alarm system transformer + power supply (would both go bad atonce?)

On 11/23/2013 1:07 PM, Danny D'Amico wrote:
On Sat, 23 Nov 2013 12:13:57 -0500, krw wrote:

I'd measure before replacing anything, though the battery is likely
toast no matter what else is bad. Don't replace it until you're sure
that's the only thing that's gone.


That's exactly how I'm (trying to) handle it.

I don't have any problem replacing anything that tests bad; but, just
throwing parts at a problem isn't what I'm trying to do.

Of course, that means I need to look closely at the circuit board, as
that's the first step of any diagnostic procedure.

Looking at the BOTTOM of the circuit board, I find something
interesting at each end of the electrolytic capacitor leads:
http://farm4.staticflickr.com/3677/1...1c6ff9ec_o.gif

It almost seems as if the capacitor overheated, but, it it not
an open circuit:
http://farm8.staticflickr.com/7397/1...a5301efd_o.gif


It actually looks like someone has replaced that electrolytic before.
Oh yea, looking at your other pictures, it now looks like the board was
manufactured in 1998. ^_^

TDD
 
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