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I have a good scanning setup, I can scan without disassembling books. If anyone has a copy I will be happy to scan it for all to use.

I read everywhere that loosing the CAL data when the battery dies is like planning a ride through hell but nobody actually demonstrated what is involved when such thing happens. while troubleshooting

All those plugins alse have HW difference so they can be identified and fixed/restored even with empty eeprom by mainframe unit. I spent quite lot of time o this. Would be nice to have trigger only

This is a well-known NAND flash corruption issue. Call Keysight and ask for a free fix, if they don’t do it then report back. Read this if you want to do it yourself:

Can’t help you with the screw, maybe a attenuator mounting screw if the unit assembled right. Highly recommend you replace the battery asap. A new battery in place doing it’s job should read

You can call their customer contact center and ask. Worst thing that happens is they say no. Best thing is they say yes. Intermediate thing is they quote a reasonable price to fix it which will

My MSOX2024A had been sitting on a shelf for several months without being powered up. This weekend when I powered it up for the first time, it would not boot up and froze with just the REF and MATH

I would like to thank the group. My HP 8594E is now working correctly. I basically cleaned the attenuator inside contacts with deoxit then checked the attenuator by itself on a bench using a simple

The 7448 is "likely" to work fine, given the circuit you showed in the first post. Install a socket, and try it. Worst case, you have to plug something else in. Pete

Hi Greg, Thanks for the datasheets and Jameco information.? From your mention of the 9307 using active pull-up, I searched for more details on this. While looking thru the Jameco 7447/7448 Family

DB, My last message was rather haphazardly written and didn’t include as much information as I had intended. It was after midnight and I was trying to get some sleep before a 5:00 rise. Looking at

An EEPROM dump would be a great asset, saving much grief in people that lost the 54720 mainframe calibration due to a stinkin' dead battery. The 54717 "calibrator" hardware is just a brain dead pair

I looked for one a couple years ago with no success. They exist in printed form but it appears noone has scanned one yet.

Hi again On electric/electronic tests: I've changed three 2N2222 transistors on A6 rectifier board, one mising (due to transformer hit I presume), one leg broken and one corroded. Diode drops, fuse

My unit has a ton dust and some white and green powder coming out, as you can see in my photos. Nasty but no fatal, only surfaces afected. So, after all, this little fella was lucky. Tony,?definitely

Hi Ruben, Looks like you are doing a great job of bringing it back to life. I can sympathise because I went through more or less the same process a few months ago. I think my 8350B might have been

Hi Runin, Deoxit D5 works extremely well on all electronics, pcb with parts, edge connectors etc. the can is small and a bit pricy. I restored a HP-8663a with a 2 cans from the inside out after

Hi! Some updates and photos for those who are interested: - On the cleaning: finally?I disassembled everything because corrosion?reached many gaps and I found it necessary to sand and brush each

Hi Dave, I once fixed a 5086-7812 second converter with a 5021-8661 board. The only problem on this, was cracked solder joints on the feed through capacitors on the board. So I did not have to open

A rather rare one. Crosses to a industry part number 9307PC (plastic package) or 9307DM (ceramic package). Is currently stocked by Rochester Electronics but they want you to purchase a quantity of