liquid spilled 820-3115 1/4 fan spin

roy.ruan

New member
having a 820-3115 board,minor spilled around u2600 area and near area.
so replaced u2600 and ultrasonic cleaned the board.
everything looks cool , no corrosion.

but board still the same condition when it was sent in. 1/4 fan spin, spin off, then spin on then off , repeat again and again.

check PPVRCT_G3_OUT= 3.3V , SYSCLK_CLK32K_RTC =0.3V

Other s5 circuits are all present

looking for some suggestion,thanks
 

roy.ruan

New member
no CPU Vcore plusing , check all other voltages jump around but CPU vcore is nothing , 0 all the time.
check R7402/03 are good resistance and traces are good
 
Top