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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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![]() "Danny D'Amico" wrote in message ... 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: snip What are the voltage measurements of the pins by the capacitor? What connects to this connector? What connects to J1 and J2 (GND and PWR post, respectively)? That black object between J1 and J2 is a relay. This relay needs to be activated by something, and I am guessing a power failure deactivates this relay, enabling the battery back-up. So, are J1 and J2 inputs with the connector being the output, or vice versa? |
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