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Old 10-31-2020, 05:30 PM   #1
bakre
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Join Date: Dec 2014
City & State: Nederland
My Country: Zwolle
Line Voltage: 220VAC 50Hz
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Posts: 95
Default Hp la-d704

Hello gays

I have an HP 15 with mainboard LA-D704 is not turn on at all.
19v in is present
Acok is 3,3v
Acdet is 2.5v
ADP_ID is 1.75v
EC_ACIN is 3.2V
VCIN0_PH is 2,7v
EC_RST# is 3.25V

in the schematic it should give EC_ON to start the 5/3v always to start all the section but it not giving this signal unfortunately this line is not shorted to ground i have replace the i\O and the charging IC and 5/3v no change.
i thing i have one missing signal on i/o chip if any one can give an idea to solve the problem.
it is an HP 15-ay094nd reflash the bios also no change, if any one have an EC dump i can try to reflash it maybe will help.
When insert the battery is charging and it light orange.

Thanks. any idea
Attached Files
File Type: pdf HP_BDL50_LA_D704P_REV4.pdf (1.01 MB, 13 views)

Last edited by bakre; 10-31-2020 at 05:37 PM..
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Old 11-01-2020, 12:28 AM   #2
mcplslg123
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Line Voltage: 220vac,60hz
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Default Re: Hp la-d704

Check your dc jack or better replace it.
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Old 11-01-2020, 05:59 PM   #3
bakre
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Join Date: Dec 2014
City & State: Nederland
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Line Voltage: 220VAC 50Hz
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Posts: 95
Default Re: Hp la-d704

Thanks for answer

The problem solve with reprogram the i\o chip
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