Repair

Tips for troubleshooting with Linux | Opensource.com

https://opensource.com/business/15/10/troubleshooting-process-linux-problems?sc_cid=7016000000127ECAAY Although it would be nice to believe that cars, home theater systems, computers, and Linux never break, the reality is that they do. Many people have no problems with Linux, but those who do want the best information and guidance possible. 

Hq Power adjustable PSU

Here is teardown of one failed power supply. What is inside Two 6.8 uF 400V capacitors had failed and burned the mains fuse. Good design that it was well protected. But again the failure was bad electrolytic capacitors. This device was not worth to repair.