Hp 54100A software failure

[barney]

Hi all,

I just purchased an HP 54100a digitizing oscilloscope with a faulty power supply and repaired it succesfully and all worked fine. After cleaning some dust around the cards i now have a software fault which reads `SOFTWARE ERROR!  Address error 0469BEH`

Can this be repaired? Would it be possible to get a backup of the eproms from Keysight maybe?

I am absolutely gutted and any help would be grately appreciated !

[Smith]

1. Are you 100% sure the PSU is still ok?
2. How did you remove the dust?
3. Have you tried reseating IC's / cards?

Software issues can have a lot of origins. Lots of times it's hardware related instead of eeprom / software related.

Maybe you can give some more info. You get an error, so I guess it boots? What does it do, and what doesnt?

[barney]

Hi,

Yes the power supply is fine all rails are good. I removed the dust with brushes and wipes after removing the cards one by one very carefully. The cards were pretty clean so i didnt actually do anything with them it was mainly around the back near the fan. I have tried reseating all the boards but not the ICs. The interface board was not quite pushed in all the way on one side but only by a millimeter. (Could this of caused the fault?)

By the time the CRT warms up there is the error i mentioned above, it is highlighted and on top of a grid background. When i press the reset button (on the interface card) it seems to do a test screen with the option to abort (which doesnt do anything) and then back to the error screen. No other butons respond at all and no other text.

I will carry on trying to reseat things and look for any bad connections and so on later today

Thanks for your help.

[VK5RC]

Sorry I am no direct help but it may be worth a try at the yahoo group
https://groups.yahoo.com/neo/groups/hp_agilent_equipment/info
Does the scope respond to HPIB commands?

[Smith]

You might want to take a look at the solder joint of the card connectors too.