EEVblog

Dave repairs his Rigol DP832 Lab Power Supply.
Why did it need repairing? That's the FAIL part Rigol might want to look into...
UPDATE: I have an old revision board. Newer ones contain a much beefier MOSFET:
www.eevblog.com/forum/blog/eev...
The previous DP832 Design FAIL: www.youtube.com/watch?v=y-KkP...
Datasheet for pass transistor: web2.cet-mos.com/PDF/CET-MOS/T...
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[@battletoad6896]

It is 2021, almost 5 years after this video:

[@brucewoods9377]

Dave as a technician for over fourth years the saying in the trade was.... "Engineers can design, but have no idea of repair." The Fuse blew, that was the protection, what caused it to blow? You simply replaced the fuse without tracking down the cause. You never even measured the FET so you had to go back in again.

[@Smith8340]

You do a great job with these videos Dave. I love all your additional bits of info, as they can certainly help with repair of unrelated items. I learn so much from your efforts, and really appreciate you taking the time to pass on your knowledge.

[@FranLab]

Love that FAIL button!

[@garthhowe297]

This was one of my favourite videos. I really enjoy watching (and learning) your process of troubleshooting.

[@tmurphy26a]

One of the best videos I have enjoyed from you.

[@AldoBr549]

I believe this is the first video of yours I've watched where a repair was successful. Good job Dave! Love it. Also, I'm glad I'm not the only one that has equipment fail randomly and for no good reason.

[@craigs5212]

Dave,

[@memylastname9972]

Glad it’s not just me that starts to fix some thing and end up fixing two other things I’m using before the finish ! Great to watch thanks

[@pvc988]

Damn you Dave. It's 4 AM, I was just going to sleep but you had to upload new video.

[@ericclark9770]

Will be interesting to see what the folks at Rigol will have to say about this documented component failure or the "dodgy" solder job on that component. Keep us updated, Dave!

[@fuzzy1dk]

you should always screw transistor on a heatsink before soldering to avoid putting stress on the solder joints, so it makes sense if the transistor was soldered on manually after the big heatsink and transistor had been mounted

[@JimGriffOne]

Thanks for the video, Dave. I was thinking about buying one of these and the information will help if the issue happens to me in the future. I will still definitely buy one of these power supplies as they are within my price range and do the job that I want.

[@KustoRika]

Good job Dave. I learn a lot out of your videos.

[@duggiewest8181]

Love the troubleshooting , thanks Dave.

[@fimbles1015]

Cheers for all the amazing videos :)

[@imaginarypoint]

For those playing at home. Have the save PS. Same issue... but it was only the fuse that crapped the bed. Transistor was ok. Tested ok from min current to max current of channel1 using same 8500 electronic load. Thanks Dave!

[@traincrazyb]

Dave, I love your videos! Watch them even if it's 4 AM haha!

[@7head7metal7]

I really like the endcard! Thanks to KZbin my "watch later"-list is automatically playing the videos, so when I forget to give my big thumbs up, I have to switch back to the video. So, much better now! Also, nice ethusiastic talk, gave me some good smile :D

[@pratwurschtgulasch6662]

i bought a power supply a few days ago and thanks to your reviews it was neither the siglent nor the rigol.