Author Topic: BK Precision 1735 power supply  (Read 3627 times)

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Offline EK701Topic starter

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BK Precision 1735 power supply
« on: November 21, 2014, 02:28:39 am »
I just got a BK Precision 1735 (not the 1735A) power supply (http://www.tequipment.net/BK1735.html) for cheap and I want to do some basic tests on it before I plug it in, so I'm looking for a service manual.  I did a web search, but no luck.  I can probably get by without one, but it's always better to have the manual.  If anyone knows where to get the manual online or if you have a hard copy, please let me know.

Thanks!

Eric
 

Offline matt6ft9

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Re: BK Precision 1735 power supply
« Reply #1 on: November 29, 2014, 02:02:17 am »
'repaired one of those a couple of months ago.  It had a bad bridge rectifier.
I was not able to find a service manual either.  But, on the bright side, the power supply was based around the LM723 voltage regulator.
www.ti.com/lit/ds/symlink/lm723.pdf

It's not too complicated of a circuit.
 

Offline t1d

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Re: BK Precision 1735 power supply
« Reply #2 on: May 16, 2019, 10:56:03 am »
Repair videos. Schematic and pix links in comments of first video. I am not the author. Good stuff.




Schematic Attached. Board pix too big to attach; see first video comments for link.

https://drive.google.com/file/d/1hPfrbPpVYsPpvWJyk9woXMio2SEN9Y1b/view

https://drive.google.com/file/d/1UTZf0lRMxIFOBGM3m2JKutHKFZUPHFZg/view

https://drive.google.com/file/d/1jZkXvO7JUSCr2tn8F2lbwndxn316j08r/view

Yes, I know this is an old thread, but this post keeps the information centralized.
« Last Edit: May 16, 2019, 11:29:25 am by t1d »
 


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