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Still trying to find any information on these service notes microfiche sets. Seem to be really rare.? Thank you, Wolfgang, KI7PFX ----------------------------------------------------------

Tin whiskers in cavity? Sent from my 20" Texas sized iPhone....

Open the cavity and see if there are signs of corrosion -- frequent problem-- Put it out and try with a known good power supply. Did you change both capacitors ? Then the transistor in the cavity is

Hello, Yes, noted it. Don't know how much it will do to help in this case. Disconnected the bias lines and hooked the output to a spectrum analyzer. Output is either at 3.522 GHz and -16 dBm or 3.830

Hello, well. This is very strange, all of it. When your unit locks up, do the LEDs keep marching? Just powered on mine again, and he is a happy camper. IMHO, one of us needs to look at the schematics

Tam, I will try to replace the NVRAM when same issue comes back. but don't expect too much on it because my 53310A restores last panel settings at powering up. Jack

Bill and Robert: I spent a lot of time on this problem and got nowhere. If anyone could explain to me what I did wrong I would be very happy I tried lots of ways to read the cards. I do not recall

Hello, mine is made in USA, serno 3121A01960 I dont think it is the main board. In my case, what really gave me food for thought was that the rabbis grip fixed the problem. Probably the NVRAM has gone

Hi Bill, Tthe HP 892xB and E8285A series do not use PC format cards or even ATA hard disk emulation. They are "linear" cars that look like RAM or ROM. The test sets cannot write to FLASH cards, just

I have an original, write protected. ? I also have the files (thanks, Amtronix!!) I can't read or format the card in a USB PCMCIA card reader under Windows 7, or on an HP200lx. Bought a 2 MB flash

Wanted: ?the main ADC PCB board from a ?*non-working* ?HP or Agilent 54845 ?Or 54835 ?Infiniium scope. Need the plastic ADC sockets & other parts. Please contact me off-list (private). thank you,

Glad it's working!

Ahhhhh... Wait! You power cycle your 3457A??? -Chuck Harris Kevin Oconnor wrote:

I have a 3457A DMM that is missing the external square cap on the ON/Off power switch. It makes it difficult to power cycle. None of the switch caps I have are large enough to fit. The cap is of the

Hi Peter, I did check many things and all did look fine. But still error. Then I went thru the steps on p295 and p296 in this document:

Tam, The S/N of my 53310A is:?MY40000122 made in Malaysia I guess some component on the A1 main board is failing...... Jack

Bought a 3577A at auction: outward fault no display.? After some investigation I've discovered that the 1345A has been robbed of three (socketed) HP proprietary? chips: 2 off 1NB4-5003 analogue

In the 8359XX plug ins, the cavity oscillator is not phase locked and there is only a plunger adjustement with a screw. --------------------------------------------

Hello, I have an HP83592A (SN:2718A02469) where the internal LO (A11, cavity oscillator) for band 0 (0.01 to 2.4 GHz) isn't locking to the correct frequency. It is supposed to be locked to 3.800 GHz

Hello, that is indeed so strange - in your case, the LEDs kept running. Either way, I just reassembled mine. Let us hope it was just a temporal problem. Tam P.s. May I ask which serial number your