You’re right, I superimposed the number. That certainly doesn’t help at all.
Don Resor Sent from someone's iPhone > On Nov 23, 2022, at 10:50 PM, Don R via cctalk <cctalk@classiccmp.org> wrote: > > The data sheet lists H5892 through H5899 and H5900 through H5911. > > Don Resor > > Sent from someone's iPhone > >> On Nov 23, 2022, at 4:32 PM, Peter Coghlan via cctalk >> <cctalk@classiccmp.org> wrote: >> >> Don, >> >> Does the url suggest you may have searched for a H5901 rather than a H9501? >> >> Regards, >> Peter Coghlan. >> >>> >>> NTE seems to turn up these possibilities for a H9501. >>> >>> https://www.nteinc.com/search/search/search.php?ss360Query=H5901 >>> >>> Don Resor >>> >>> Sent from someone's iPhone >>> >>>>> On Nov 23, 2022, at 12:04 PM, Antonio Carlini via cctalk >>>>> <cctalk@classiccmp.org> wrote: >>>> >>>> On 21/11/2022 21:45, Antonio Carlini wrote: >>>>> >>>>> I have two more I can open up and look at, but I cannot get to them >>>>> tonight and I'm probably out tomorrow too. But I think I can get to those >>>>> other two supplies on Wednesday. Hopefully at least one of them will be >>>>> readable! Otherwise I can desolder the diode from one of the other two >>>>> and hopefully find a useful marking. >>>> >>>> >>>> Turns out I have three more PSUs ... and the diode markings are >>>> unfortunately invisible on all but one. That one is this one: >>>> >>>> https://drive.google.com/file/d/1TeGTcBBv7KecMJ2CmNcR0O-tb3jZigy6/view?usp=share_link >>>> >>>> >>>> It's not really visible there either but with the PSU out and one end >>>> desoldered I can see that it is marked H9501. I can also see that it >>>> doesn't conduct either way, which might mean that this PSU is the >>>> non-working one I know I have. Obviously the capacitor (820uF 250V >>>> electrolytic) is going to need replacing (might as well do both). But >>>> first I need to remove them and see what (if anything has happened) >>>> underneath. >>>> >>>> >>>> This now goes back into my queue (behind the MicroVAXes and the H7868B PSU >>>> modules) so if you fix yours before I get to mine, please let me know what >>>> you did :-) >>>> >>>> >>>> Antonio >>>> >>>> >>>> -- >>>> Antonio Carlini >>>> anto...@acarlini.com >>>> >> >>
