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Agilent 54835A scope (4 channel 1GHz / 4Gs/s) repair & uphack
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analogRF:
connected a speaker to the mobo, there are no beeps until right after the "Verifying DMI pool data...." and I get one short beep
and then nothing. :-// |O

shouldn't there be any beep earlier like after or before RAM test or right after recognizing IDE devices?
nctnico:
Can you check whether the disk drive is working? Suddenly I recall I had a mysterious boot problem when I disconnected it in my scope. It is a long shot but worth trying.
analogRF:

--- Quote from: nctnico on November 26, 2019, 10:06:38 am ---Can you check whether the disk drive is working? Suddenly I recall I had a mysterious boot problem when I disconnected it in my scope. It is a long shot but worth trying.

--- End quote ---

I tried 3 different disk drives including the one from my own working 54845A. I also tried the HDD of the faulty unit on my 54845 and it boots
I tried booting from floppy to DOS but it seems that it just does not access the boot device at all  :palm: :palm:

have tried different RAM sticks in different slots...all PSU voltages are good...

"Verifying DMI pool data...." and one short beep  :-//
nctnico:
Did you Google yet?

I have found this:
https://forums.tomshardware.com/threads/stuck-at-verifying-dmi-pool-data.501230/

It seems to have something to do with the boot device order.
analogRF:
yeah, I have been googling this thing for several days...i have seen that page,  too...have tried pretty much all their "solutions" ...

these people usually have done something to their system and then it failed to boot or they built a new system

the thing that is most irritating is that this unit had been booting fine before it was set aside for a few month and now it doesn't boot
nothing has happened to it during this time...

I am gonna clean the connectors for the 3rd time again and also move over the video card and interface board one slot (or 2 slots if possible)

I also tried another video card that I had for these scopes by the way, no luck. I do have another interface board but it is an older
model and the ribbon connector (that goes to the acq board) does not fit...but what the hell can be wrong with that board anyway?

I cannot even boot it from floppy to DOS. I will try to find a regular floppy drive (instead of the LS120) and try with that and see what happens
I must have one laying around somewhere....

EDIT: I have also moved the HDD to the secondary IDE channels just for the heck of it....of course the boot device and boot sequence in BIOS have been checked and re-checked 100 times...
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