Hello I have a Samsung NP350E7C laptop. The laptop don’t boot. When the laptop is plugged : I have a green led light When...

I have an Canon MG7150 printer with some printing trouble. The printing head looks to be misaligned. As you can see on the...

I have an audio amplifier (FPL 400) which constantly blow its fuse when started. I reproduce it even without speaker...

I finally succeeded to fix it ! The two transistors where broken, but also the 4 resistors close to the transistors. I changed all the components with an arrow. Those with a red arrow were broken. Those with a yellow arrow were functional but were changed as a precaution. Now, everything is working, thanks !