Elektronika MK-52: The MK-61 big brother?

[jebem]

(08-21-2015 03:21 PM)clarke2001 Wrote:  The machine (DC-DC converter and the unit) is somehow defective.

Hi, welcome to our forum.
The dc-dc converter is quite sensitive in its operation.
I would make sure all the components are ok, not only the caps.

Also, the output is sensitive to the load, so the dc-dc converter should not run without being properly loaded by the pcb components.
The risk here is that if the voltage is too high, even as a result of a voltage peak caused by a power-off followed by a power-on operation, the ic's may suffer damage.

You may try to contact Sergei Frolov, see his messages above. He might add some more useful information, depending if he is reading this pages (usually he is a very busy person).