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Tektronix MDO3014 failure, MDO3000 series

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GridWork:

--- Quote from: m k on February 13, 2021, 09:59:54 am ---If you have a place where the machine can be in low ambient temperature maybe it is not resetting so eagerly.

Then if you downgrade far far away back maybe your corrupted part gets some new old code.
Assumpton there is that upgrade is upgrading only those parts that are included in that upgrade.

Are you back in square one but with new firmware?

--- End quote ---

Helpful hint: For Tektronix scopes if you create a "forceinstall.txt" file on the USB flash device containing the .img file, then the scope will do an upgrade, regardless if the version is newer or not.

I did this rolled it back to 1.18, and the front panel micro is still codeless. Also tried 1.26 and 1.30 (the newest).  Makes sense as there should be boot code to tell the microcontroller how to deal with the incoming code. If that got corrupted during the reset, then it wouldn't know what to do. Only the programming port or JTAG port would be able to load new code.

I'm still not sure if it's a thermal issue entirely. Since I cannot get the firmware to re-flash the front panel micro, the scope will either get the recycle bin, or sent back to Tektronix to get rejuvenated.

m k:
If you like somebody here will buy it from you for sure.

I don't know nothing about your specific device but don't let it disturb you.
Put device specifics aside for a moment.

Do you know what is in that image file, do you know that front panel code is there?
It's a good practice to upgrade all but do you know it.

I understand that bootloader is a special thing and is not changed during normal write operation.

Is the upgrade a script driven, can you edit it?
If you can find a spot where front panel is accessed you can add a flag how it is done, like is it skipped or actually written.
Maybe it's even saving write cycles and reads first, if that fails there should be a note somewhere.

GridWork:
So to add an update to the MDO saga, the tough decision was made to send the scope back to Tektronix for evaluation. There was apparently no way (for me) to get the code back on the front panel microcontroller.

To answer a previous question, the firmware updates are a .img file about 40MB for early versions and 60+MB for later versions. I tried loading several different versions (at least Tek makes them available, not just the latest), none would get the front panel working.

Replacing the scope with anything equivalent would end up costing the same or more than the repair, so I'm going to see if Tektronix sees this as a manufacturing defect or customer responsibility.

Thanks to all that had suggestions and put some time in trying to help!

kcbrown:

--- Quote from: GridWork on February 26, 2021, 01:12:16 pm ---So to add an update to the MDO saga, the tough decision was made to send the scope back to Tektronix for evaluation. There was apparently no way (for me) to get the code back on the front panel microcontroller.

--- End quote ---

Did they manage to do anything for you on this?

GridWork:

--- Quote from: kcbrown on March 21, 2021, 11:06:56 pm ---
--- Quote from: GridWork on February 26, 2021, 01:12:16 pm ---So to add an update to the MDO saga, the tough decision was made to send the scope back to Tektronix for evaluation. There was apparently no way (for me) to get the code back on the front panel microcontroller.

--- End quote ---

Did they manage to do anything for you on this?

--- End quote ---

The scope is still back at Tektronix, repairs are being finalized. The end damage was they are replacing the front panel board (I think) for $600, plus another $600 for Calibration (this one is required for any equipment going back) plus the cost of shipping. Half of what was originally quoted, which I can live with even though it makes me grumpy.
<Insert Grumpy_Cat meme>

I think that the speed things are moving is very much dependent on the times, capacity everywhere seems to be reduced.

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