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Old 04-01-2012, 07:24 PM
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JohnH
Member # 159

JohnH is offline
 
Join Date: Feb 2005
Location: NSW
Posts: 1,206
Replacement PCB arrived today - fitted - it works, great service from SBig.

And a word of warning about LAB type power supplies - these often allow the ground to float - that is the -ve pole is not a true ground (earth). This is done, I think, to reduce noise.

BUT

In my case the difference between +ve and -ve was 13.8V the difference between -ve and earth was 24.7V baaad.

Bottom line is don't assume - check.

Regards

John
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