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Rigol red screen of death

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SkyMaster:

--- Quote from: prasimix on February 26, 2018, 11:42:43 pm ---
--- Quote from: SkyMaster on February 26, 2018, 11:24:07 pm ---There is also the yellow screen of death,

 and the snowy screen of death

--- End quote ---

Great, so over time we can expect a full rainbow  :-//.

--- End quote ---

Oh, sorry I was not trying to make fun of your situation  :-[

The DS1054Z that I had that was crashing randomly would boot normally (most of the time). Was your  DS1054Z still booting normally?

Maybe there are more than one cause that lead to a red/yellow/snowy display and unresponsive controls.

Pinkus:
As it is scrap right now anyway (sorry!) it might be worth to resolder it:
Wait until your wife is not at home. Remove the board and place it in an oven at max. temp for a re-solder of all parts / balls. The oven needs to stay closed all the time!!
After you are finished, make sure you cool down everything slowly (first open the door a bit, then after one minute completely; after another 2 minutes you may remove the board).

Caution: try this with another scrap board first!!! and check how long it takes until the solder melts everywhere.
Then add another 30 seconds as the Rigol board probably needs more time due to higher thermal mass.

Or (much much better) go and find a soldering company in your area and ask if they are willing to run your board through their solder oven.

Good luck!

prasimix:

--- Quote from: SkyMaster on February 27, 2018, 12:34:39 am ---
--- Quote from: prasimix on February 26, 2018, 11:42:43 pm ---
--- Quote from: SkyMaster on February 26, 2018, 11:24:07 pm ---There is also the yellow screen of death,

 and the snowy screen of death

--- End quote ---

Great, so over time we can expect a full rainbow  :-//.

--- End quote ---

Oh, sorry I was not trying to make fun of your situation  :-[

The DS1054Z that I had that was crashing randomly would boot normally (most of the time). Was your  DS1054Z still booting normally?

Maybe there are more than one cause that lead to a red/yellow/snowy display and unresponsive controls.

--- End quote ---

Hi SkyMaster, keeping a good sense of humor shouldn't hurt, actually situation is funny, on one power up it was worked fine, on another, it became unusable :). It seems that is not completely dead, since firmware (or what remained of it) can light on and off buttons and change red screen to black. And that's all. I already ordered another one from Batronix (DS instead of MSO, so I have to see how to compensate lost Logic Analyzer functionality) and this one is ready for auction for spare parts or maybe to put it in oven as Pinkus suggested.

frozenfrogz:

--- Quote from: Pinkus on February 27, 2018, 10:44:37 am ---As it is scrap right now anyway (sorry!) it might be worth to resolder it:
Wait until your wife is not at home. Remove the board and place it in an oven at max. temp for a re-solder of all parts / balls. The oven needs to stay closed all the time!!

--- End quote ---

No! Please do not reflow anything "just because".
Baking hardware in the oven without knowing what actually causes the problem is more likely to make things even worse.

Like with every board repair: Follow the power lines first. Might be something simple like a bad cap or transistor.

MadTux:
First, check all power rails for ripple, to exclude bad capacitors. Is there even a schematic available?

Otherwise, faults like these (sometimes it works, other times it doesn't, weird behaviour...) is quite typical for bad EPROM/Flash or rarely bad RAM. So I doubt reflowing will help. Unfortunately it's all BGA, so not easy to change or reprogram. Maybe try with JTAG?

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