Re: Alarm system transformer + power supply (would both go bad at once?)

[Danny D'Amico <dannyd@xxxxxxxxxx>]

On Sat, 23 Nov 2013 17:10:37 -0600, The Daring Dufas wrote:

> Looking at your picture, right above where the transformer leads connect
> to the terminal strip, there is an electrolytic capacitor right above a
> small bridge rectifier. I can't quite tell but the capacitor could be
> swollen and shorted. The 3 terminal voltage regulator is above that
> capacitor attached to the aluminum plate heat sink. Those are the main
> components of the AC to DC power supply and if one of them is shorted,
> that could kill the power transformer. ^_^

I'm surprised you knew *where* the transformer leads entered the board,
because I didn't say, so, but I see what you're talking about.

Also, I'm surprised you knew that was a bridge rectifier, because, well,
because I didn't - but - looking at it from the side, I can see four
uninsulated legs, which indicate it has four leads, one of which is
marked "+".

Here is the same picture, but, with a few things marked that I know of
(including the electrolytic capacitor I think you're talking about):
 http://farm6.staticflickr.com/5486/11018768016_8962578375_o.png

I looked and touched and that cap seems OK visually; but, of course,
it's probably 20 years old...

For the first time, I'm wondering if it's not just a new transformer,
but, that I probably need to replace the entire board...