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15-n (DA0U93MB6D2) No Display
https://vlab.su/viewtopic.php?f=53&t=128890
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R EZ A [ 21 сен 2022, 10:43 ]
Заголовок сообщения:  15-n (DA0U93MB6D2) No Display

hi guys
this board has water damage and it was almost dead in first place
i turn it on and now it has all voltages on coils but there is no display. lvds or hdmi
post code is 01
SYS_PWRGD = 1.8V
RSMRST#=3.2V
RSMRST#_R=1.9V

how can i find is it cpu problem or what?
as i make it alive from total death i really want to repair it
ill be grateful of your helps
thanks all

mohammedsf [ 30 сен 2022, 07:46 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

Where was the damage in which area ?

measure and post the voltages and resistances across all the coils..

Serguz05 [ 30 сен 2022, 09:25 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

not enough information. few measurements.
and the resistance of the processor
https://comsystem-tlt.ru/obzori/soproti ... processoro

R EZ A [ 12 окт 2022, 19:52 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

mohammedsf писал(а):
Where was the damage in which area ?

measure and post the voltages and resistances across all the coils..


Serguz05 писал(а):
not enough information. few measurements.
and the resistance of the processor
https://comsystem-tlt.ru/obzori/soproti ... processoro


water damage was mostly around PU2 that doesn't let it to turn on
and allitle around pu8 (pr121) that doesn't make cpu voltage

i thought SYS_PWRGD = 1.8V means that all voltages are good
also HWPG= 3V
Voltages on all coils are good

resistance for pl16=32ohm and pl11=148
its amd E1 cpu

mohammedsf [ 13 окт 2022, 03:25 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

Does the voltages rise on PL11 & PL16 ?

if yes, did you try to flash the bios ?

do you have "U18" installed on the board ?

R EZ A [ 13 окт 2022, 11:19 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

mohammedsf писал(а):
Does the voltage rise on PL11 & PL16 ?

if yes, did you try to flash the bios?

do you have "U18" installed on the board ?


yes i flash some bioses and same result

PL11=0.90V
PL16=0.84V

no there is no u18

and my board is UMA

mohammedsf [ 15 окт 2022, 04:12 ]
Заголовок сообщения:  Re: 15-n (DA0U93MB6D2) No Display

Check the resistance of USB D+,D- lines,

if they are not in low resistance try the attached bios..

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