Hi,
I just got a dead LDT-5910B. It seems that I have a similar issue as Echo88: The fully potted Precision Inc. transformer which is supposed to supply voltage to the 7815 and 7915 is broken. Thus my +15V and -15V rails are dead. The second output which provides about 10VAC for the raw 13VDC output, from which also the +5VDC for the digital section are generated is still working. The second transformer (non-potted) seems fine and provides +UN as +10.7V and -UN as -10.7V (after the FBR, obviously).
Does anybody have any information about the transformer? I guess I need to find another 5910B which I can salvage the transformer from, any other ideas?
Thanks,
Michael
Edit: Got some stuff wrong, corrected it.