BKPreicsion 1672/3 triple output power supply

[Linearojg1976]

Does any kind soul have a service manual or schematic for this bench supply? I have the 1673 version. It is displaying random voltage and amps on the master side displays, Output I\V is fine referenced to the slave side display but I want to find and fix the issue.

Owners manual attached for model reference.

 

[BSST]

This is probably a long shot: BK Precision 1670A power supply repair help - Page 1

Good luck!

 

[tgreese]

I have a 1660 that needs some love; watching with interest!

 

[Linearojg1976]

I dropped bk a note requesting the service manual or schematics earlier. We will see if that gets me anywhere. Aside from the display issues it works well but the display coupled with the transformer looking a little worse for wear makes me want to be sure.

 

[1audio]

Are the transformer connections really exposed like that? Usually those would be under some tape at least.
The symptoms suggest a bad connection between the supply and the display system.

 

[Linearojg1976]

Yes they are, the plastic covering the transformer is brittle and starting to break apart however this looks like human intervention. Can I just tape the soldered connections and put them back under the plastic?

Thanks,

Owen

 

[BSST]

Heat-shrink tubing slipped over each joint occurs to me but tape should work.

 

[Linearojg1976]

Schematics and repair parts

Took a little while, but in case these are useful to somebody else in the future I have attached all of the documents from BK for this model. The parts use BK references numbers but still, it's a start. The service manual will be helpful for troubleshooting the LED screen, nice clear document.

Owen