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HP Test Equipment Logo Plates Wanted.
Greetings, I have a couple pieces of test equipment missing the HP logo plate. The kind that is held in place with the two bumps. One is an HP 5326B the other is the venerable 8640B. I¡¯d really like
By William Kibler · #122207 ·
Re: Convert monochrome 5454x scope to color
Just for informational purposes I had to replace the CCFL back-lights on one of my 54542C's and used: https://www.plazmo.com/products/ltm08c015ka?_pos=1&_sid=9044fceb4&_ss=r The LCD screen in mine was
By Jay Heine · #122206 ·
Re: HP 140A and 141A oscilloscope power supply issues
Chris, the main differences between the A, B and S, T models of the 140 Mai frame family are (1) the S and T versions have rear connectors (or access holes for spectrum analyzer plug-ins) for
By Jeremy Nichols · #122205 ·
Re: HP 140A and 141A oscilloscope power supply issues
Hi, Christopher! As I look at the schematic documentation that you supplied for a 140B frame and a 140T frame, these appear identical to me.? At least, I think so.? (The 140B manual is a bit rougher
By Neil Barlow · #122204 ·
HP 6012B power supply
Hello All, My 6012B variable power supply has been reading a "negative current display" when the unit is turned on, even though the current pot is turned fully CCW to zero. If I adjust the "voltage
By J. chang · #122203 ·
Re: 8673D RF generator_MPU connector (part of kit hp11726A)
Hi, For the MPU connector (part of KIT hp11726A) that I mentioned in the previous email, I finally did the loop assembly between J1 and J2 since I found parts available, and did the test. And it
By Yves Tardif · #122202 ·
Re: HP8753C Source Pretune after YIG replacement
Yes thats the one I was looking at. Great I might give this a try on the 8753.
By vk2bea · #122201 ·
Re: 8350B *restoration adventure?*
Hi Ruben, Glad it helps, I've attached the cross reference for T1 part numbers from my manual (which you may already have) and a scan of the A6 board main fold-out from the manual as well, I've not
By Adrian Nicol · #122200 ·
Re: HP 8601a Victim of Shipping Damage
Thanks Christopher, Thanks for the tip on DHL.? Overall, shipping in general? has been really disappointing the last 2 years.? In the 25 years prior to that,? I've purchased quite a bit of
By DB · #122199 ·
Re: HP 54645A internal battery
Hi Manuel, Open it up and take a look. If you find a battery, take a picture and share with us. In my standard old HP 54645A, there is only the battery inside the NV-RAM chip. It did of course run out
By Askild · #122198 ·
8673D RF generator_MPU connector (part of kit hp11726A)
Hi, I found an 8673D generator for my lab, and had to do some minor repairs (power supply, bad contact problem on a PCB). It is functional but I'm at the point of doing a more detailed check of its
By Yves Tardif · #122197 ·
Re: HP8753C Source Pretune after YIG replacement
From a private discussion I had on EEVblog back in 2018 about using the hpdisk project with an 8753C. I'll include the entire message for those interested in building the project. I italicized the
By Orin Eman · #122196 ·
HP 54645A internal battery
I just purchased a 54645AN scope. The N means it was delivered under a US Navy contract. ?It has a sticker on the back that says it contains a Panasonic BR2354 lithium battery. ?Are they referring
By Manuel Maseda <mmaseda@...> · #122195 ·
HP 3314A DC Offset issues
Hello folks, My very first post here.? I have been repairing and trying to do some very basic adjustments to the function generator.? Everything is fine until 5.13 DC Offset Adjustment. I set up as
By @AndyMok · #122194 ·
Re: 8350B *restoration adventure?*
PD: Well, evil is done... I just bought the 9100-4068 (8566B's) transformer. Can use it on 8350B or not, ?20 it's a few money for that monster. If finally cannot restore the sweeper, I'll can do a
By RubenRubio · #122193 ·
Re: 8350B *restoration adventure?*
Thanks Adrian! That helps a lot, my schematics are blurred! I am a bit confused now, reading the ratings of fuses in A17 and A18 boards from 8566B SA. The current figures are low, specially for the 10
By RubenRubio · #122192 ·
Re: 8350B *restoration adventure?*
I have a very quick scan of the change sheet including schematic from my printed manual if that might help. Sorry it's in parts but I only have an A4 scanner! I may have missed it but I didn't see the
By Adrian Nicol · #122191 ·
Re: 8350B *restoration adventure?*
In that case the serial prefix is important, the OSM can be different for different production periods. -Rik
By Rik Bos · #122190 ·
Re: HP 5090B Droitwich receiver documentation wanted
> > There haven't been any modulation changes like those affecting > wwwvb, the inconvenient hiccup when Europe and the UK switched to > 9KHz channel spacing for long and medium wave AM broadcasting,
By tony sayer · #122189 ·
Re: 8350B *restoration adventure?*
PD: To not bother you, I have already get the 8566B power supply readable schematic
By RubenRubio · #122188 ·