HP 6632B Needs Repair [UK] - SOLVED

[dans34]

i have this HP 6632B psu that when its turned on (after the self test) it shows 0.0007v  0.0004a  on the display , 
When you set a volatage and connect the load its fine for around 20~30s but then it switches to CC and the voltage drops

I lack the electronical knowlage to diagnose the issue , does anyone know of a repair place in the UK (preferably in the North Yorkshire Area) that could take alook at my unit  ?

[gerrysweeney]

Are you sure thats the right model number, I tried googling it but could not find it.

Gerry

[KJDS]

That's not an a HP part number.

[dans34]

sorry its 6632b

[KJDS]

The service manual is available here.

http://cp.literature.agilent.com/litweb/pdf/5962-8119.pdf

[dans34]

The service manual is available here.

http://cp.literature.agilent.com/litweb/pdf/5962-8119.pdf

thanks , i just realised it was you i bought it off

its been working fine for the last few months then i tried to charge an older 19v tablet pc with it (i stupid idea) since then ive had the issue above

i have followed as much as i could from that service manual , even checking that the output terminals are not shorted but still no dice

[KJDS]

I'm sure you've done this already, but have you set the current limit to 5A?

[dans34]

I'm sure you've done this already, but have you set the current limit to 5A?

i just set that up and now it seams to work fine , looks like it was an id 10 t error

however it still shows  0.0007v  0.0004a  on the display  after the self test (but thats not a problem)

[AndyC_772]

That's just a very slight calibration offset error, nothing to worry about. I have 3x 6632B's and 1x6634B, and none of them show 0.0000V and 0.0000A when switched off.

[dexters_lab]

Same on mine, figured it was a cal issue. Nice to know thats all it is