Fault: Buzzing Noise and Power Problems When Moving Power Plug

This is a general information note regarding the electronics that control printers and other devices.

This fault is known as a Dry Joint and can cause a wide range of faults and errors.

I have come across this problem many times in my years servicing printers and appliances.

Shown below are before and after pictures of a power supply from a Kyocera FS-1010 that has suffered a couple of dry joints on the main power plug connector.

dry-joint-before

After re-soldering (I had to sand the connectors clean to get the solder to fuse correctly).

dry-joint-after

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