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Update... First off, thanks Rick for those files. They match the files that I used to program the eproms. I removed the hardware down to the CPU, memory and CRT controller as suggested (but forgot to

Sure, ?? Here attached are the 14.14 files from a chipmax programmer (6 total) Rick

Hi, Rick. Could you email me the A.14.14 firmware files??Thanks,GregSent from my Galaxy

Will do. Thank you!

Hi Casey, I have all that hardware. If you contact rick at amtronix instruments (lab4@...)? - I can ship the hardware to you. ? rick

I recently re-acquired my old HP8924C from a friend's estate who passed a couple of years ago. When I found it the device would not power on and all the outer case and inner power supply case screws

Hello to all, If anyone is interested I am selling my CRT display that was just removed from my 8920B a couple weeks ago. It has a crisp, clean display with no issues at all. No excessive screen burn.

Long story short... I think that you got it right. I swapped some stuff around including a firmware board with the extra memory and everything is working now. Thanks so much for the help!!

This looks terrific. Is there a link showing how to do this? Thanks Dave KA6BFB

Looks great! Steve Flory W9KOP sflory@... "I like climbing towers because people look up to me"

Hello to the group, I know the LCD conversion is nothing new for the 892x series. I recently, thanks to member "DCFluX" mentioning this, added external VGA out the back of my 8920B. I wanted to share

?I’m about to clear the bench and undertake the task of repairing/replacing caps in the PS of my 8920A. Someday, maybe Rick will get the opportunity to turn it into a “B” model. ? tnx Mike

Thank you for the info Rick, greatly appreciated! I managed to score a soft carry case for my 8920B for free from a friend, also renewed all the caps in the power supply, and new memory battery. I

Thank you Rick, much appreciated. While trying to analyze the circuit, I concluded that was part of the start circuitry and replaced it first up. Unfortunately it wasn't the problem. I'll try the heat

The following files and folders have been uploaded to the Files area of the [email protected] group. * /Agilent HP 8920A 8920B 8921A Power Supply Capacitor Renewal/Agilent HP

Rick - Is that the same power supply that is used in the 8924? John K

Dave, ?? That "daughter" board is near the middle of the rear most power supply board. It's NOT the board with the (2) potentometers. rick

Hi Dave,? Look for a 47uf/ 35V radial capacitor on a "daughter board" that is on the board closest to the rear of the 8935. That is usually the problem. A good test to see if that's the problem is to

I posted this in another group and it was suggested I post it here. I have a HP 8935 that I’ve used for a while with no issues. Turned it on recently and it shows no signs of life - nothing. I’ve

Update... 14.14 FW still will not boot (non-recoverable firmware error) even with S1 in the non-protected position. My eprom programmer, a BP1148, seems to have no problem converting Intel hex to