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John, Engineer and electronic enthusiast for more than 12 years.
Category: Consumer Electronics
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A nutone 478 amplifier, it will not release front door. It

Customer Question

a nutone 478 amplifier, it will not release front door. It buzzes but does nto release
JA: Thanks. Can you give me any more details about your issue?
Customer: It is 4 zones, everything else works fine. Door strike just doesn't work. It is an Edwards door strike
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Submitted: 1 year ago.
Category: Consumer Electronics
Expert:  Wayde Alfarone replied 1 year ago.

Hi, Wayde here. I'll be glad to help you with this issue.

Expert:  Wayde Alfarone replied 1 year ago.

If the door is making a buzzing sound, and the door latch will not release, then usually this means the electro magnetic striker is jamned. You might want to visually inspect it to see if is bent, or needs lubricant. If you lubricate it, use only graphite spray.

Customer: replied 1 year ago.
That's not the issue, the striker has been replaced.
Expert:  Wayde Alfarone replied 1 year ago.

Can you give me any other details ?