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Thankfully I was able to move just about all the files and pictures from the old group to here. Photos: 26 MB Files: 131 MB Including the famous guide to repairing your 8924 power supply.

Thanks for the tip, Ralph. I actually had an old PDF from an unknown source, probably the old Yahoo groups, that I had kept. Gives details of what appears to be the same cap you described. 47uF 50V.

I would replace all the electrolytics. The hard part is getting to them. Unless you just like removing all those screws. They are all the same age and once they start failing, they fall like dominoes.

Chances are it is some bad capacitors.? ?I do not know if the files made it over from yahoo, but there is some info on them.?? There is a small vertical circuit board that has a 14 pin IC and two

My 8924C Radio Test Set must have sensed the presence of the 8920B downstairs. It's gone in a huff and won't turn on :-( 4 Philips and 32 Torx fasteners later and I've got the PSU out. Nothing on the

I have not ran it in a long time, but there is some sort of self test/calibraton? that includes a jumper or two and an attenuator pad that is ran just using the menu on the test set. Ralph ku4pt

Good evening gentlemen, Thank you all for your contributions to this thread, and for your encouragements! I already spend quite some time digging in the cal data structure. I think I begin to

ik0ibi added folder HP8920 CRT module manuals

Hi, Hank, your HP group.io moderator here. I favor, for important documenation, data, and software, the use of file storage rather than attachments.? Several reasons for that, none of which I'll go

Hi CrazyFin, Your asks are welcome ! Using the Jeff's software, I attached two "full calibration data" (not only from s.a.) from two different 8920 sets of mine,?just some post before in this thread.

Hi @Angelo / ik0ibi I did not fully understand if you attached the cal data file in your post or into the files section? @Jeff and all others looking on how to calibrate the spectrum analyzer module.

Hi Finn, Hi Jeff, this in attachment is an Epson card, that I bought some times ago from an honest vendor on Ebay USA. Should contain S.A. calibration data to download in 8920. Of course serial number

Roberto Barrios has very good page where he has documented his LCD-conversion on his HP 8920A: https://rbarrios.com/projects/8920lcd/

@Jeff: First of all: Thank you very much for your hard work on creating that program that can download the calibration factors for the spectrum analyzer module in HP 8920A:s!! I currently do not own a

I am also hosting it on my website at http://www.fathermulcahy.net/HP8924C/ case sensitive.

Hi, Not really. Cal data is stored in EEPROM and this program is only there to get to this cal data (if you are curious about how it looks...). If I'm correct Lithium battery on 8920A is only there

RFI-EMI-GUY added folder HP8920 Instructional Video

I got into this thread late. Is this program something useful for backing up my 8920B before replacing the lithium Ion memory battery?

just happened to be looking at the CLIP ....there are only two MMIC's in that that like an MSA-0486 IIRC. Would just replace both and see what happens. The 8920? CLIP may be in the files area ....at

Wow, that really is counter-intuitive but it now makes sense. Thanks for the detailed explanation about the signaling paths. I’m inclined to leave well enough alone for now, then perhaps at a later