820-2936-B PP3V3_S5 voltage not solid

(sample: before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v Variable )

I replace u7000 ok
replace u4900 ok
replace u7200 ok
replace u7941 ok

but same problem

thanks
 

dukefawks

Administrator
I would measure some voltages before randomly replacing parts. PPBUS, SMC_G2_EN? Are any other voltages pulsing too?
 
SMC_G2_EN no stabile before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v the same

PP3V42_G3H 3.475 V stabile
PPBUS_G3H 12V stabile
 
No voltage L7260..But l7220 a have voltage no stabile (sample: before 0.123v -2.255v- 3.453v after 0.123v -2.255v- 3.453v Variable )
 
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