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Had a door operator board fry on a call yesterday
It was in a 15 year old office building, just started throwing random codes. I swapped it out with a spare from the van, but now I'm wondering if there's a common power surge issue with that model. Anyone else seen a lot of these MCE-300 boards go bad lately?
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patricia_morgan1d ago
Check the transformer output first. Seen a few where the taps were wrong, sent too much voltage to the board. Fried it in a week.
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amy_reed792d ago
Ever check the ground connection on those? I had one last month where the ground lug on the board was loose, caused all sorts of weird faults before it finally cooked itself. Might be worth a look before you blame the power supply.
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