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Date
Re: VISA problems with ancient test equipment?
Hi Yves, sent you this message from two different email adresses but both could not be delivered: ============================================ Hi, thanks again for your efforts and your detailed
By dk1vi · #145076 ·
Re: Several problems with Agilent 54810
Check the supply circuit of back light itself. 從我的iPhone傳送
By Yiu On Tony C · #145075 ·
Re: Several problems with Agilent 54810
Hello, *Does anyone have the electrical diagram of the Mitsubishi AA084VB02 LCD screen? * I have found the service manual, but not the schematic. The screen is black, there must be an internal problem
By Gerard · #145074 ·
Re: k&s 1470 Wire bonding reconstruction
Hello Lehane, I was trying last year to send Iban EB3FRN an email but I cannot really find his email address. I am watching his blog site and also his youtube channel but I don't see how to get in
By Razvan Popescu · #145073 ·
Re: 8566B - Low signal on 2-22 GHz band
===== Red LED says heater is working hard to bring up temperature of YTX. It should turn on bright at power up, and turn off when YTX temperature is within target. I just checked on my 8566B, red LED
By Ozan · #145072 ·
Re: 8566B - Low signal on 2-22 GHz band
I have been reading with interest. At the LO output, you are measuring the YIG local oscillator, correct? However, this tells you nothing about the YIG tuned mixer, which, horror of horrors, I hope is
By Jeff Kruth · #145071 ·
Re: 8566B - Low signal on 2-22 GHz band
Hi All, Thanks again for the suggestions. I'm calling it a night, but I wanted to update this thread before turning in. I have already run the test on the LO OUTPUT, and I do get a mixed 321.4 MHz s +
By W4PJB · #145070 ·
Artek Manuals - vacation announcement
A message posting requested by Artek Manuals: Artek Manuals will on vacation from June 27th through July 5th, returning to answer questions, process orders on Thursday July 6th. regards, Ron -
By Ron · #145069 ·
Re: 8566B - Low signal on 2-22 GHz band
Follow this sequence: Right next to the 1st LO OUTPUT connector (front panel) is the IF jumper. Remove the jumper and check it for continuity. The one in the picture on EEVBLOG does not look like the
By pianovt · #145068 ·
Re: 8566B - Low signal on 2-22 GHz band
Hi Pete,you can check:if there is IF out (321.4MHz) from 1.5GHz LPF A6A16 and from ACLU A6A5 to LPF (jumper A6W22).if there is YTX A6A8 drive from current driver A6A7if there is resistance on YTX
By sv1aku · #145067 ·
Re: 8566B - Low signal on 2-22 GHz band
Thanks everyone, I tried running the Preselector Peak Routine, no success. Also, just for kicks, I swapped out the YIG with a supposed "tested good" unit. Also, no change, although I didn't expect
By W4PJB · #145066 ·
Re: k&s 1470 Wire bonding reconstruction
Hello Massimo, Thanks for the tip with the patents! As for the heater I already have some left over power resistors so I can build something similar to yours. I will most probably come to you with
By Razvan Popescu · #145065 ·
Re: k&s 1470 Wire bonding reconstruction
Razvan, to get an idea of the components of the machine try looking up the patent for that bonding model. I did the same thing for the 1470 and found these two patents: US4202482 US4239144 I suggest
By @iv3hed · #145064 ·
Re: HP 3852a extended memory modules info
Great job ! I would like 1 bare board, thanks, rick
By gren · #145063 ·
Re: HP 8566B - Can my high voltage transformer be faulty?
Saevar, I used to troubleshoot Solid State CRT power supplies. Replace the fuse and any shorted components that drive the HV transformer. Use a variable power supply and bring up the voltage slowly to
By David Balma · #145062 ·
Re: 3562A Help/advice
A goofed up character generator (ROM) or maybe a dodgy address line to the character generator would be my first guesses. Address buffer chip gone poof maybe? I do not expect this problem to be caught
By Wilko Bulte · #145061 ·
HP 8566B - Can my high voltage transformer be faulty?
I have a HP 8566B as the title implies. The CRT tube does not turn on and I believe I have traced (at least one) fault to A1A3 high voltage regulator board. The HV oscillator does not oscillate and it
By saevar · #145060 ·
Re: HP 8340B sweeper and 8757A Scalar Network Analyzer. Do they work together?
My pleasure, Marco! Let me know if I can provide any other information! Steve
By Steve - Home · #145059 ·
Re: HP 8405A Vector Voltmeter Probes
Hi Jeremy and group, any updates on the HP8405A probe repair ? I've bought now a bunch of MMBFJ176 from Mouser and found a source for the 5082-2835 diode here in Europe. In browsing thru Avago
By DG7RBN · #145058 ·
Re: HP 8340B sweeper and 8757A Scalar Network Analyzer. Do they work together?
Great! So it's time to retire the 8350B and hire the 8340B! Thank you for your time. All the best Steve
By Marco Marchesi · #145057 ·