Scantronic 9943EN keypad crackling interference noise

[london_reet]

Hi, I have a Scantronic Eaton 9943 LCD keypad which has recently started to make a crackling, electrical interference type noise (almost like a crackling internal speaker?).

The noise is not constant and happens almost randomly with no rhyme or reason (i.e. not when setting/unsetting the system). The noise is not very loud, and can only really be heard when it's generally quiet with no other background noise around.

The keypad is physically 8+ metres away from the control panel.

Any idea what this could be and what my best course of action should be?

Thanks a lot.

 

[sparkymarka]

Dust in the keypad speaker ….keypad cable ran with mains cable….faulty keypad dry joint ….ect ect ect