Electronics > Repair
W&G sna-20/23 spectrum analyzer repair
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aseok:
Hi.
I have a sna-20 and sna-23 spectrum analyzers from wandel & goltermann, both facing problems and need repair.
sna-20 has hard drive controller failure error.
sna-23 has problem of sending incorrect lcd data and hdd related problem.
both have compensation data floppy disks but problem doesn't solve by running compensation software.
Has anyone experience of repairing these systems?

aseok:
After inspecting for a couple of days and replacing some parts, it seems that i need installation firmware of these SAs, say, SNA-20 and SNA-23.
Does anyone have the related firmware/floppy disks?
Thanks.
kyndbo:
HI aseok,
Can I get a copy of your  compensation data floppy disks ?
I have a SNA 23 , but no boot disk, I have changed backup battery, but would like to try to boot from floppy disk,
to restore my data in B: drive ,
I woud like to share our findings with our analyzers, and solve them,

regards helge

kyndbo@gmail.com
aseok:
As you know, all floppy data sectors must be copied and pasted in a floppy to work.
What is the hard drive of sna 23? does it boot from cf card?
Qw3rtzuiop:
Hello guys,

were you able to repair your analyzers?
Ive repaired one of these lately and uploaded photos and the hdd backup to xdevs.com.
But my SNA23 is from the H series without the ram. Just one HDD.

All the stuff is here:
https://xdevs.com/doc/WG/SNA23/
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