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Tektronix MDO3014 failure, MDO3000 series

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Howardlong:

--- Quote from: stj on June 24, 2024, 12:27:56 pm ---interesting thread,
you should probably dump those 1wire devices and keep a note of their serial number and part id.
it's a bit lame though that a 1wire device-search failure didnt just result in a probe message on the screen!

--- End quote ---

Yes it isn't great if my hypothesis is true, although definitely better than some kind of internal failure!

I also have an MDO4000C at my other bench space that's lived out on the bench 24/7 for six years, also with TPP probes. It's not my go to scope on that bench though, it's only had 247 power cycles and 350 hours on, but it enjoys a couple features my daily driver doesn't have (e.g. 60ps MagniVu, USB-HS decode and waveform histograms). I do cycle the probe connections on occasion though with both high speed differential and single ended FET probes, so maybe that has some kind of cleaning effect.

northhants:
Just found that my (work) MDO3024 does not like starting when too warm (like me).

It refused to start this morning. It would get as far as the splash page and no further. It had done this occasionally recently, but previously did start on the 2nd or 3rd try. Not this time.

But today is also the hottest day so far this year, and I do not have air conditioning in my home office.

I also don't have a temperature chamber at home. But the 'scope just fitted in my fridge. After about 20 minutes cooling down, it started OK.

Howardlong:

--- Quote from: northhants on August 12, 2024, 02:44:56 pm ---Just found that my (work) MDO3024 does not like starting when too warm (like me).

It refused to start this morning. It would get as far as the splash page and no further. It had done this occasionally recently, but previously did start on the 2nd or 3rd try. Not this time.

But today is also the hottest day so far this year, and I do not have air conditioning in my home office.

I also don't have a temperature chamber at home. But the 'scope just fitted in my fridge. After about 20 minutes cooling down, it started OK.

--- End quote ---

I'm sure you may well have already tried this. but did you try booting it without any probes plugged in (cf my problem immediately above)?

northhants:

--- Quote from: Howardlong on August 12, 2024, 03:28:04 pm ---
--- Quote from: northhants on August 12, 2024, 02:44:56 pm ---Just found that my (work) MDO3024 does not like starting when too warm (like me).

It refused to start this morning. It would get as far as the splash page and no further. It had done this occasionally recently, but previously did start on the 2nd or 3rd try. Not this time.

But today is also the hottest day so far this year, and I do not have air conditioning in my home office.

I also don't have a temperature chamber at home. But the 'scope just fitted in my fridge. After about 20 minutes cooling down, it started OK.

--- End quote ---

I'm sure you may well have already tried this. but did you try booting it without any probes plugged in (cf my problem immediately above)?

--- End quote ---

Sorry - I should have included that I tried the other suggestions first (remove mains (and obviously reconnect!), then remove probes). Still stuck at the into display.

Error Log reports 0 system errors

Also, Powerups: 579
Operating time: 18988 hours

Just tried power cycling (I'm stopping now, so doesn't matter if it doesn't start!) - and it started!

Howardlong:

--- Quote from: northhants on August 12, 2024, 05:42:14 pm ---
--- Quote from: Howardlong on August 12, 2024, 03:28:04 pm ---
--- Quote from: northhants on August 12, 2024, 02:44:56 pm ---Just found that my (work) MDO3024 does not like starting when too warm (like me).

It refused to start this morning. It would get as far as the splash page and no further. It had done this occasionally recently, but previously did start on the 2nd or 3rd try. Not this time.

But today is also the hottest day so far this year, and I do not have air conditioning in my home office.

I also don't have a temperature chamber at home. But the 'scope just fitted in my fridge. After about 20 minutes cooling down, it started OK.

--- End quote ---

I'm sure you may well have already tried this. but did you try booting it without any probes plugged in (cf my problem immediately above)?

--- End quote ---

Sorry - I should have included that I tried the other suggestions first (remove mains (and obviously reconnect!), then remove probes). Still stuck at the into display.

Error Log reports 0 system errors

Also, Powerups: 579
Operating time: 18988 hours

Just tried power cycling (I'm stopping now, so doesn't matter if it doesn't start!) - and it started!

--- End quote ---

Has this gone away now (as mine did once I'd figured out I had a probe interface issue), or is it still a problem?

Once it's actually started, does it work flawlessly? (In my case, it would crash or reboot anything from a few minutes to a few hours after switching on, as well as on boot).

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