Like for example on ZEUS's explanation in the picture below. He talks about measuring the resistance between pins 1,4 and 8.
First question: which ones are the pins 1, 4 and 8 exactly?
Second question: Measuring the resistance? Or does he mean measuring the Voltage? If not, what should the resistance be exactly in Ohms?
EDIT: Found quite some information through the chip datasheet in link below:
https://toshiba.semicon-storage.com/ap-en/semiconductor/product/mosfets/12v-300v-mosfets/detail.TPHR9003NL.html
First question: which ones are the pins 1, 4 and 8 exactly?
Second question: Measuring the resistance? Or does he mean measuring the Voltage? If not, what should the resistance be exactly in Ohms?
EDIT: Found quite some information through the chip datasheet in link below:
https://toshiba.semicon-storage.com/ap-en/semiconductor/product/mosfets/12v-300v-mosfets/detail.TPHR9003NL.html
This is technical and it seems you don't have knowledge about repairing boards.
It's not measuring the voltage it's measuring resistance like the capacitors(The orange/brown color) for me with an analog multimeter I don't use exact Ohms if I see there is resistance on both polarity then I'm sure it's shorted but if you see no resistance then the capacitor is not shorted. Another thing to find those shorted parts in my own experienced is by injecting voltage and find what parts are hot.
Without any knowledge about the basic repair, you will not understand the guide from ZeusBTC. You should learn the basic repair first
About your first question, since the image said downside then from the image, you need to start from 1 which is the first pin on the top left corner, and the 4th pin is on the top right corner then the 8th pin bottom right corner.