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 >>
