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Hiss/Buzz from HKC SW1070 Transformer

mickthewig · 2021-10-18 21:30:15

I've a spare SW1070 panel I haven't had running in a long while. I wired a keypad to it and put mains into it to test it. There's a hiss/buzz coming from the transformer. I know the solution is likely to replace the panel altogether, but out of interest, what's causing the noise in the transformer?

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18-10-2021 10:30pm

#1

mickthewig

Registered Users Posts: 20 ✭

Join Date: November 2018

Posts: 12

I've a spare SW1070 panel I haven't had running in a long while. I wired a keypad to it and put mains into it to test it.
There's a hiss/buzz coming from the transformer. I know the solution is likely to replace the panel altogether, but out of interest, what's causing the noise in the transformer?

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#2 20-10-2021 8:17am
KoolKid

Moderators, Home & Garden Moderators, Technology & Internet Moderators Posts: 24,789 Mod ✭✭✭✭

Join Date: August 2006

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Have you checked the transformer is not anyway loose or its not just the position the panel is placed in.
If it is the transformer they can be got seperatly and easily replaced.

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#3 20-10-2021 7:21pm
altor

Registered Users Posts: 11,713 ✭✭✭✭

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Posts: 11663

https://www.boards.ie/discussion/2058213728/hiss-buzz-from-hkc-sw1070-transformer

Some of the older transformers use to that if a battery wasn't connected.
Can you connect one and see if that works?

www.altor.ie

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