HP used rubber feet as standoffs and they literally melt over time making quite a mess. But reasonable to clean up. Can't comment on the sparks. Regards Paul WB8TSL
On Wed, Dec 8, 2021 at 5:54 PM Marek Doršic <[email protected]> wrote: > Hello, > > while taking a measurement my HP53131a counter sparked and became > quiet. After tear down I found both 3A/240V fuses in the PSU burnt. Before > pluging a new set of fuses, is there a knowledge of a common problem that > couses a shortcircuit at the HV side? > > The counter has also a spilage at the bottom side of the mainboard, but as > it is same as in Gerry Sweeney's youtube video (HP 53131A Teardown and > Spillage Clean-Up <https://www.youtube.com/watch?v=czCLXrUPX0o>) and his > counter still works I assume it is not related. Is it a good practice to > get it cleaned? > > .marek > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send > an email to [email protected] > To unsubscribe, go to and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
