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Finally fixed a weird power drain on a 2012 panel that took me 3 days
Just wrapped up a job in a big old house in Springfield where the alarm panel kept going dead every 48 hours like clockwork. The owner said two other guys looked at it and just swapped batteries, but it kept happening. I spent a whole day just checking the usual stuff, wiring, the transformer, even the backup battery itself. On day two I started pulling every single zone wire off the board one by one to find a short. Turns out it was a motion sensor in the garage attic that someone had spliced into the main line with some really old, cracked tape. The wire was barely touching a metal joist, just enough to bleed power slowly. I redid the splice with a proper connector and heat shrink. Has anyone else seen a slow drain that tricky from a single bad splice? It felt like finding a needle in a haystack.
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thomas_butler1mo ago
My old boss in Tampa had a rule about checking attic splices first on any weird drain. He said the heat up there cooks the tape and wire over time. That garage attic find totally proves his point.
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robinp891mo ago
Slow drains are the worst. Had a similar one on a 2010 system where a wire run under a carpet was pinched by a bed leg. It didn't short out fully, just rubbed the insulation thin over years and leaked voltage to the floor. Took forever to find because the voltage drop only showed up with everything powered on. Those tiny, constant draws are way harder than a dead short.
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