The Original Prusa i3 MK3 is the successor of the award-winning Original Prusa i3 MK2 3D printer.

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PSU clicks during bed heating up

I Just finished assembling the printer and cant seem to figure out why my PSU makes a clicking noise witch definitely sounds like a electrical noise only while the bed is heating up and at the same time my red led on the bed keeps flashing on and off during heating?

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Hi Chad,

while the bed is heated, the red LED flashes to inform the user. Regarding the clicking noise, there will be an update, which will change the PSU / HB behaviour and reduce it.

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When might we expect that update? I just got my i3 MK3 and it has this behavior...

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Chad will be eternally grateful.
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