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how do I stop the mains light from flashing?

The mains light is flashing on the Melcom ST6500 security alarm
Collingwood, December 2012
Put the power to it back on, check your fuse board/Fused Spur.
Check the fuse with a meter or just put a new one in.

Alarm, December 2012
link Click here to see other fixes for Melcom ST6500.