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I'm not sure if this works on the frequency reading but on the other ones there is the ability to average the gauge. If you highlight the units with the cursor as I recall the was an average key that

When reading a transmitter's frequency, the last few digits jump around so much it is hard to determine what is real.? Is there a setting to normalize or smooth that so I can warp it onto frequency?

Now I can confirm that the problem is on the A7DCU motherboard. I used 8922 motherboard installed on it and was able to boot up.

Hi. unfortunately I haven't tried to solve the problem yet due to lack of time. I hope for some response to your appeal :-) Maurizio

Hi Maurizio How did you solve this problem.

It happens to me too, same problem. I've never investigated. Maurizio

Hello everyone. No beeps after boot (Manual says bad Host DCU Controller Board), just some white noise on speaker. No led lighting on DCU (left corner 4 leds all dark) at all (Manual says DCU or

I must have repaired 8 or 9 of these now. I always double & triple check all power supply rails. I've seen all sorts of errors fixed by replacing all electrolytic caps in PSU & regulator board. Also

An update. I received the used A16 card and installed it. Now, I get a "Calibration hash sum incorrect. Writing to default values" message. Booting proceeds no further. The manual says than when

Thanks Yuri for the reply. Unfortunately, I don't have the proper equipment to do that. It seems that the prom chip wasn't bad after all. When I transferred those chips to the A16 card from my "E"

Re: [HP8920/8935 Family] HP8924C ROM Checksum error Few additional notes about "leaked" EPROMs data recovery. CMOS chips 27Cxxx allow quite deep lowering of Vcc, some to almost 3.3V level, and

Re: [HP8920/8935 Family] HP8924C ROM Checksum error Hello, Friday, July 29, 2022, 0:23:21, wspx472 wrote: After sitting a couple of months, my 8924C now displays a "ROM Checksum Error". I also have an

Check with Rick at http://amtronix.com/. He’s one of the best in dealing with these units. KE6CD

After sitting a couple of months, my 8924C now displays a "ROM Checksum Error". I also have an "E" model I bought mostly as an organ donor for the "C" model. I put the A16 card from the "E" model in

I have an 8924C with the same problem. Looking like it is the boot ROM. HP part number 08920-87168. They seem to be unobtanium. Anyone know where I might find one? I did try an A16 board from an "E"

the error 200 means that one of the boards is not communicating or holding the serial bus down. you may want to run the diagnostics and see what it says.? The?MSDIAGS3 will run the self test and you

If it no longer has the power-on settings saved, this suggests that the memory battery needs replacing.? Then with a new battery, to make it again act like an 8920 on power-up you can follow the

So I recapped my HP8924C power supply because I had the intermittent wouldn't power on issue. But since then I lost my power on default settings and was presented with the cell site call screen

Alberto, I hope you found the files that you needed. If not, just subscribe to the group. I believe A.18.10 FW requires a newer memory board than what I have. Let us know if you are successful. Greg

Hello Greg, Thank you for your kind reply. In fact, I was not subscribed to the specific group, hence I could not find the folder with files. Just in case you are aware of details, my 8920A is