Pure sinewave inverter motherboard control board/fet issue?
I have a pure sinewave inverter motherboard that i bought off aliexpress. It is rated for 24vdc input at 110vac 60hz 2000watt output.
I had it connected up to my transformer and operating for couple months now without any issue and out of the blue some of the fets just burst on the board and it is kind of strange as to how it happen as there was not a surge or short circuit in any form whatsoever.
Here is the link for it:
When i check the board out of the (8) fets. (6) of them got damage so i went ahead and change the 6 of them then hook it up back and when i switch it on i get the standby red led lite, the driver board red lite, the blue motherboard lite and the relay behaving eratic, multiple flashes and clicks from the lites and relay before the standby lite on the inverter turn from red to green and then the blue lite on the motherboard comes on to shows operating ok but yet still i am not getting any output. Sometimes the red lite that is on the control driver board comes on and flashes 3 times and off for 3 secs and then the process repeats and sometimes it does not comes on, playing with the on and off switch for the inverter causes the control driver board red lite to stay on constantly sometimes but still no output. Sometimes even the thermal fan comes on constantly as you turn on the inverter which should not have happen as the heat has not reach the set point as yet.
The control driver board is EGS002 + IR2110 as you can see in the link below.
I am wondering if the control driver board is the issue or do i need to also replace the other 2 fets too so in essence all fets should be replace once any amount got damage? Or what else could be the problem ?
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