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RAMPS dead ?

Posted by ss002d6252 
RAMPS dead ?
October 23, 2017 11:52AM
This morning my power supply (stock psu with an A8) died. I connected up a PSU from a pc and I get 12v on both inputs at the RAMPS 1.4.

The board fans work, the extruder heats and the bed heats but I get no motor movement at all - I have disconnected all except the Z motors and tried a spare stepper driver but I'm not getting any movement at all.

The LED on pin13 blinks when firmware is uploading and the stays off (I can't remember if it should stay solid or not when not uploading ?)

I suspect the psu failure killed something on the RAMPS but any ideas on what I can try before trashing the board ?

Edited 1 time(s). Last edit at 10/23/2017 12:02PM by ss002d6252.
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