- first check power supply by removing motherboard connection from power supply
- Then plug in then check back light glow or not . if back light glow means power supply is ok .
- Then i connect motherboard to power supply then i see my stand by led is not glow.
- Then i check 5vsb .
- Then i see my 5vsb is ok then i check 3.3v it show ok but this circuit two other regulator is also use for 3.3v.
- Then i seen those two regulator is not out 3.3v.
- Then i check out off two regulator one is show sorting with gnd.
- Then i apply external 3.3v supply by using dc meter.
- Then i see hdmi switch ic is heat.
- Then i have replace it my problem is solve.
I hope this Artical is helpful to you.