Reflashing the firmware won't help if there are faulty components on the board.
You need to examine the power circuitry, though there aren't many parts there that are prone to failure. You should start by replacing the connector, then check the voltage at the inductors and the controller- or do it the other way around if the connector is actually fine.
I am aware that if there are bad components inside that flashing the firmware wont help. I have already opened it and the connector looks fine, it is not loose. There are no parts that look damaged or "blown" so before I start removing or replacing the connectors and parts inside - I will attempt reflashing the firmware first.
You could post a photo of the board showing the power connector and other components.
A faulty component doesn't necessarily look burnt. If you have a working unit, you can use a multimeter to measure the voltages in the power circuit after the capacitors and chokes, and at the PWM controllers and then perform the same checks on the faulty device.
I will take it apart and snap you the pics as for a multimeter - I have no idea how to use those - I am an electrical moron lol for all my mining setup stuff, I have an electrician that does all of that.
Measuring the voltage with a multimeter is very simple, but the main thing is to be careful with the controllers so you don't short-circuit the contacts.
Ask your electrician if they can do this to repair your devices using this method.
But take a photo first, I want to see the power circuit.
when I get time to talk to him, I will but I dont own a multimeter either.
as for the fw reinstall - I did the process, that was easy - it did not work.
Screen still shows a non-supported power error message. and app reads Power failure. it does turn on, can change all the lights colors on/off etc and wifi connects - it just does not mine.
I recommended you buy the most basic multimeter, which costs 4-5 dollars. Its only purpose is to measure voltage from 0 to 24 volts.
I don't know how anyone can live without this device. it's impossible to test a battery or accumulator without it.
Watch the video, and in 3 minutes you'll learn how to use it.
https://www.youtube.com/watch?v=UAuqZAvOmYU
