开云体育

I’m kicking myself because a couple years ago I sold my parts unit to a friend. I’ll have to see whether he still has it or the power supply. Anyone recall how many 220uf caps it has? Thanks.

Does anybody know if there is a published specification for the video output signal on some of the HP equipment that is referred to as the 19.2 KHz signal.I have looked at the signal on a digital

Yup a PITA to get to, just did mine see 8924 thread useful info familiar but not exactly the same layout Shotgun the Large 220uF @450V caps with good black jacket nichicon105*C and that'll probably

Hi, 8935 PSU is completely differnt to the 8924C. Like most of this era it may suffer from failed electrolytics. I'm not aware of anything specific though. Robert G8RPI.

After sitting idle for a few months and disconnected from AC power, my HP8935 won't power up. It was just fine the last time I used it. Does anyone know whether its power supply suffers from the same

But only applies to parts of the instrument. Specifically, not the spectrum analyser.

It is in the instrument software, in the Service menus. Mike Stevens

Where can I find the Cal procedure?

My Reference DAC REF_DAC_COARSE $84 FINE was $9A YMMV

Thanks, lads! HP 8935 died 47uF read as 35uF would have started at the wrong end of it Also replaced the large Chopper caps and board and back panel battery while I was in there... Used DTV Pilot

Just bought an Agilent 8935 E6380A for Amateur radio and repeater use - test, repair, etc.? It is v0.02.02. Started with an AA Battery error, fixed.? But now the CR2477 battery is detected as

Robert G8RPI added folder */HP8920 Tools/8924C 8922M cal data G8RPI*

So I downloaded the Cal data from a 8924C and tried to on a 8920B without SA and that halted with an error. I then tried a 8922M opt10 with a SA and that worked OK. Thanks Jeff. Robert G8RPI

Remove all leads Remove rear feet (two Torx 15 pet foot) Remove strap handles (two phillips per strap) Remove M3 screws under strap (lots of Torx 10) Pull bottom edges of cover out sightly, slide back

Does someone have the disassembly proceedure for opening the case?

usually its just the one cap on the +15 volt standby supply which is on the daughter card. No green LED when plugged in which I think that document goes through. the standby supply is obviously on

Couldn’t agree more! Replace all the electrolytic capacitors in the supply.

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.