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Scantronic 9751 Aux DC Fail keep blowing fuses?

Have replaced fuse twice. Blows straightaway when system reset.
How can I identify what is causing the problem



Chris
July 2019


Need to mend your Scantronic home alarm system?

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Answers - mend, repair, fix

Disconnect cables at aux + and - terminals. If system resets without fuse blowing then there must be a short circuit between one of the cores. If you have a test meter check for continuity between each pair of cores in each cable. There should be no continuity if there is then that is the faulty cable/ sensor or whatever is on that zone. If no meter reconnect each cable in turn until fuse blows, faulty cable found. Much easier with a meter though!

alan mckenzie
July 2019

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