SUN GTIL 1000W limiter Solar Power inverter dismantle and fix part 1

Part! 1.My SUN GTIL 1000W grid tied SUN solar power inverter gave up after almost two years of good service! Let's what's wrong and try fix it.
Ts100 soldering iron
YR1035+ Low Z meter

[ampere]

Thank you for the instructive video.
Like me, you always try to repair anything that blows up.
Congratulations.

[Wornout]

thanks viorel, always enjoy your delivery and content. I wish I'd worked harder at school .

[zaprodk]

Hi. It's very hard to see/hear in the video which transistors went bad, and you don't mention the part numbers. Is it QS1 and QS2? What's the part numbers in your devices? Thank you in advance.

[RBMK--vjrn]

Hi Viorel, nice video as always.
Mine still running, same Sun GTIL1000, haven’t done any improvement as well.
It seems that even the heatsink for those Mosfets are too small and not directly in contact with the rest of alum body. So large area of heatsink are just for diodes on the back. I am thinking to add extra alum on top of current Mosfets’ heatsink but space-wise a bit tricky not to interfere with the LCD board.
Btw is it all IRFB4227?
Thanks and goodluck.

[pkefvkef]

Hello viorel.I try to catch you on the phone is impossible....Hope you keep well

[typxxilps]

Might be worth to mention that you should be aware of the full capacitors and that it might be better to wait quite a while before opening that case.

[aaamarco]

HI,
I have a SUN-1000GTIL2-WIFI
and I couldn't set it up for the internet,
always gives me offline.
One question, is there software for Windows to view the data without going through the internet?
if so which software?
Thank you.
Marco.

[ioandruga]

Hello Viorel,
I've just order this inverter, hoping to install it for my parents for a small 250W panel. Do you know if the instructions also detail electrical safety instructions? Would I need to do anything in the electrical power box ? any new safety fuses needed?

[MultiPowerLoRd]

Hello everyone! I got 2000W version and each day i´m performing a decreasing in power production. At beggining the max production was 1850Wp, and day by day it is decreasing the production by ~20W less everyday, now is producing max 950Wp. Anyone has same problem?