Fixing a faulty USB power supply.

A friend got this power supply from gearbest and it arrived faulty. He had no luck with their returns system or email, so asked if I wanted it to make a video about. So let's see if we can fix it.
I'm not sure how the back of the case is supposed to be attached, it came off quite easily and that may hint at a rough shipping experience.
Note that the LCD display just says 5V whatever the output voltage is, and it's just the current that changes.

If you want a set of the desoldering tubes then here's a general ebay com search link:-
https://www.ebay.com/sch/i.html?_from=R40&_sacat=0&LH_BIN=1&_nkw=hollow+desoldering+needles&_sop=15

Note that the rectifier on the secondary side appears to be an active rectifier type circuit that uses a dedicated chip and MOSFET to achieve rectification with very low voltage drop and heat.

If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
http://www.bigclive.com/coffee.htm
This also keeps the channel independent of YouTube's advertising algorithms allowing it to be a bit more dangerous and naughty.

Видео Fixing a faulty USB power supply. канала bigclivedotcom