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Why these relay issues? Answered

In my PCB ,AC voltage is passes under the relays(R).. relays too become heat up.

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Downunder35m

8 weeks ago

I don't know the specs but I do know things get hot either when they malfunction or when too much power goes through them.

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Downunder35m

2 months ago

Relays that stay energised heat up.
This however mostly only happens if the relay in question is not designed to stay on for long periods of time.
If the traces on the circuit board heat up and cause the issue then clean them up and add a good layer of solder over them.