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electronics troubleshooting help needed Options
 
benzyme
#1 Posted : 10/30/2018 2:55:23 PM

analytical chemist

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Is anyone (I know you are, Rivea) handy with an oscilloscope and multimeter? I desperately need help troubleshooting this +36 V/-28 V DC switching power supply. Once corrected, the reward is free analysis as long as I have the LCMS.
"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
 

Good quality Syrian rue (Peganum harmala) for an incredible price!
 
Jees
#2 Posted : 10/30/2018 4:08:54 PM

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Located in Canada, Paul Carlson (and his channel) is no less than GOD in electronics repair:
https://www.youtube.com/...r/MrCarlsonsLab/featured

just sharing...

 
dreamer042
#3 Posted : 10/31/2018 2:42:20 AM

Dreamoar

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#electronics on the freenode IRC network might be a good resource to check out as well.
Row, row, row your boat, Gently down the stream. Merrily, merrily, merrily, merrily...

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benzyme
#4 Posted : 10/31/2018 2:51:39 AM

analytical chemist

Moderator | Skills: Analytical equipment, Chemical master expertExtreme Chemical expert | Skills: Analytical equipment, Chemical master expertChemical expert | Skills: Analytical equipment, Chemical master expertSenior Member | Skills: Analytical equipment, Chemical master expert

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Normally I'd troubleshoot my own equipment..but down to the electrical component level, I don't have the time nor resources. I have an old Fluke 77 and Weller soldering iron, but that's it.

I'm looking to drop another G or two on a variable wavelength detector, as the RAM on mine is shot. The other one I have, needs
a new flowcell. Just found out today, the FTIR needs a new LCD. I don't know wth is going on..I thought it might've been a power surge, but my flash chrom is fine, so is the uhplc pump.
"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
 
Jees
#5 Posted : 10/31/2018 4:21:03 PM

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Jees wrote:
Located in Canada, Paul Carlson (and his channel) is no less than GOD in electronics repair.

He has some vids especially about repairing power supplies:

Repairing switched power supplies:
https://www.youtube.com/watch?v=pffOJdCQ7kw
https://www.youtube.com/watch?v=NoGl7oeh7eU

Repairing regular power supplies, less likely useful:
https://www.youtube.com/watch?v=qsrMkde23s0
https://www.youtube.com/watch?v=dXtSTpBXItI

There is something wonderful about him, the way explains things is quite to the hearth, I wish all my teachers were like him.



 
 
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