Somebody please help me to sort out this problem. My E4402B specie not able to start up as it is supposed to be... screen goes off before it start showing traces...(please see the video)
I have an 4404B that does exactly the same think. just gets to the measurement screen then shuts off. I now find that it works OK using the DC Input. My problem is in the AC input part of the power supply. It looks like one of the 680uF 200V capacitors has leaked, so hopefully that is the problem
Replacing the two 680uf 200V capacitors in the PSU fixed the problem
Retrieving data ...