Hi nForce, the pwm driver is "PF6005AG". I replace it with "PF6003AG" which has more driver capabilities.
It may be that R9113 is less than 1k because it is soldered.
The best practice to test diodes and resistors is simply to desolder them.
To verify the pwm controller, the correct and safe way is to use an oscilloscope + differential probe and a variAC.
If I don't have the right tools and I see that the R9101 has blown, it is certain that Q9101 is short-circuited or leaking.
First, I check the components connected between the Q9101 gate and the U9101 pwm controller: Check R9109, 9110, 9111 and D9104.
Then I check R9113 which is the one that connects R9101 and the CS (Current Sense) pin of the pwm controller.
I also take a look at D9105 and D9106.
If everything measures well, replace the PWM controller and damaged components.
If you do not have a variAC you can replace the fuse with an incandecent lamp. It is not the best but if you have a short circuit nothing will explode in your face.
In these smps the fuse never blows
Sometimes the U9102 (optocoupler) and U9103 (TL431) blowns.
I hope you understand me.
I don't know what is worse: the google translator or me