VK Logger Ham Radio Forum Archive

Does anyone have a schematic for this device? Mine has developed a fault. I've emailed the manufacturer in Hong Kong and received no reply. It's not mentioned on ModsDK. It was a good performer until it stopped. I suspect the manufacturer is only interested in dealing with big customers.

Sorted this one today. It turned out to be a dry joint on a 10UFD 50v electro identified as C17. This C appears to only be used to kick start the SMPS. After it starts it's not used until the next switch on. That made it harder to find as an intermittent. The hardest part was gaining access to the PCB underside due to board mounted power transistors attached to the heatsink. As a supply it performs well but not very accessible to work on. A schematic would have helped localise the fault.