On Fri, 22 Nov 2013 21:48:11 -0600, Hot-Text wrote:

Alarm system transformer + power supply
(would both go bad at once?)
NO

I'm not sure what to make of these measurements:

1. Battery hooked to power supply is 12.87VDC:
http://farm4.staticflickr.com/3675/1...62c93b69_o.gif

2. Yet, battery hooked to PWR and GND blades of power supply = 0VDC:
http://farm4.staticflickr.com/3671/1...db5107c8_o.gif

3. Battery hooked to just GND blade on the power supply = 12.87VDC:
http://farm8.staticflickr.com/7360/1...cb4a46a6_o.gif

4. Battery hooked to just PWR blade of power supply = OVDC:
http://farm6.staticflickr.com/5516/1...cf8b97f4_o.gif

This makes no sense to me; but I'm not an EE.

Does this (repeatable) information above tell us anything about
the power supply or battery?

Note: This dent in the capacitor was due to it being pressed
down against the transistor (I pushed it away):
http://farm6.staticflickr.com/5491/1...136e612d_o.gif