soundcraft ghost power supply

[romeojesus]

turned on my ghost yesterday and noticed nothing is working..

there are 3 indicator lights on the front of the powersupply:
+-17v +48v +5v

the +-17v led is off!

so I am hoping its maybe just the 17v regulator...!!??

somebody have any ideas!??

 

[gyraf]

there will be two regulators for the +/-17V.

Probably either fuse, as Jaakko mentions.

Or the transformer

Or the rectifier bridge.

Jakob E.

 

[Svart]

Hmm.. is the PSU a switchmode or linear PSU? If it's a switchmode it probably won't have linear regulators on the output but rather LCR stages especially at such high expected current ratings..

do the other lights pulse at all? Switchers usually monitor the highest current outputs, the +-17 rails, and will reset over and over if the the feedback system is faulty or the rails are being dragged down and such there won't be fuses for each output but rather just one for the mains.

Have you unhooked the psu to see if the +-17 comes up without the console attached?