Lenovo Y50-70 ( (LA-B111P Rev:1A) NO EC_ON

pcexpert8

Hi .I have issue with laptop ,I dont have 3.3 alw and 5 alw I notice signal EC_ON is not present I change multicontroller but same ..No short on board I check all coil ..3VLP EC is present .button to 3.3v ,What more check ?

--=Alex=--

ON/OFF, ACIN, LID_SW#.

pcexpert8

on/off- 3.3v acin-3.3v lidsw- 0v should rise after press powerr button

montekristo

VCIN0_PH1 ?

--=Alex=--

Raise 112 the foot of the multicontroller. Сheck the signal ec_on.

pcexpert8

I injected only present 3.3v no 5v ,but there is not short on 5v ldo is present

pcexpert8

I tried flash multicontroller by vertyanov but does not see ,is possible that is dead?

--=Alex=--

Check by replacement.

pcexpert8

now i dont have it ,aliexpress will take long time..

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Lenovo Y50-70 ( (LA-B111P Rev:1A) NO EC_ON

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