Rigol red screen of death

[helge]

Resoldered the bottom side passives on the secondary associated with the voltage feedback and checked voltages again:

Blue: 16.64 V
Grey: -16.51 V
White: 9.66 V
Yellow: 6.56 V
Green: -6.51 V
Red: 5.08 V

 

Let's see if that fixed it.


ps. in fact soldering the joints on the power supply PCB did resolve the issue and scope is back in operation. Hope this helps somebody out there at some point. As the mode of failure was likely an out-of-spec divider on the power supply, I'd expect a failure mode where overvoltage is produced. I'd need to go go back and check whether there is OVP on the mainboard. Without that, a faulty power supply would easily be able to blow up the PCB (many PoL DCDC converters have 6-6.5V abs. max. input and fail when driven above that. With a pass-through failure, the downstream parts are toast.

[BravoV]

Resoldered the bottom side passives on the secondary associated with the voltage feedback and checked voltages again:

Blue: 16.64 V
Grey: -16.51 V
White: 9.66 V
Yellow: 6.56 V
Green: -6.51 V
Red: 5.08 V

 

Let's see if that fixed it.


ps. in fact soldering the joints on the PCB did resolve the issue and scope is back in operation. Hope this helps somebody out there at some point. As the mode of failure was likely an out-of-spec divider on the power supply, I'd expect a failure mode where overvoltage is produced. I'd need to go go back and check whether there is OVP on the mainboard. Without that, a faulty power supply would easily be able to blow up the PCB (many PoL DCDC converters have 6-6.5V abs. max. input and fail when driven above that. With a pass-through failure, the downstream parts are toast.

Thanks for sharing, if I'm not mistaken, your post is the 1st one that reported Rigol DS1054Z repair.

How old is that scope ?

Also regarding the fixing by re-soldering joints, which joints exactly ? As this may be useful for future owner should they experiencing similar problem.

As this forum alone has quite some number of aging DS1054Zs. 

[helge]

recommend soldering joints / checking resistors for damage:

yellow: circuitry around the optocoupler
orange: more suspect circuitry around switch-mode controller IC? (SO-8 part)

scope is 2014 vintage.

[BravoV]

Thanks, how old is it ?

[tautech]

Thanks, how old is it ?

Don't think that matters unless the SMPS has a different layout/design in new units.

Here, the heaviest component on the PCB is the SMPS transformer and it would seem a bump has flexed the PCB resulting in cracked solder joints....hardly surprising considering it's placed near the middle of the PCB and the mounting points are only on the corners.

[BravoV]

scope is 2014 vintage.

So its 5 years old ... thanks.

[BravoV]

Thanks, how old is it ?

Don't think that matters unless the SMPS has a different layout/design in new units.

Statistically speaking, it is really matter, once other DS1054Z owner experiences similar problem, and fixed using similar method.

[helge]

failure of components and solder joints under shock- and vibration-induced flexure could have been mitigated, the main culprit in the design process could have been clearance / creepage distance.
When in doubt, I think a nylon hex spacer could have made all the difference over the lifetime of the product. The caps sure look the part and there is no other visible degradation or even accumulation of dust and grime on the PCB.

[NutuElectronist]

Hello All. I have DS1074Z  with red dead screen , i try all method but no succes .
When i power up and plug in stick with update file on front USB port and press HELP button Led from CHI blinking and led from stick blinking for 5 second and after all led s from right panel blinking but screen stay RED.
Any idea how i can give life again for my RIGOL ?

[wasedadoc]

Hello All. I have DS1074Z  with red dead screen , i try all method but no succes .
When i power up and plug in stick with update file on front USB port and press HELP button Led from CHI blinking and led from stick blinking for 5 second and after all led s from right panel blinking but screen stay RED.
Any idea how i can give life again for my RIGOL ?

Try a different USB stick.  Probably will not make any difference but worth trying.

[NutuElectronist]

Hi and thank you for your replay. I try with many USB sticks but not success . May be not working because have update before with last update ?
Any chance to find nand flash Dump ?
Thank you.

[beta-tester]

just another version of death - flashing lights of death:


after many attempts i could re-flash the firmware, Rigol emailed me, from an USB stick and that fixed the issue for a month or so, but then it happens again. happily it happen in warranty time so i got a new one.