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11-26-2020, 04:14 AM
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#1 |
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New Member
Join Date: Nov 2013
City & State: Amarante
My Country: Portugal
Line Voltage: 230VAC 50Hz
I'm a: Professional Tech
Posts: 5
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Sony SVF152A29M DAOHK9MB6D0 Dead
Hi,
Laptop completely dead and don't react to power switch. +3V_WAKE, +5V_WAKE, +3VPCU present Checking NUVOTON NCPE985LA0DX line "NBSWON#" (power switch ) wont rise to 3v. After replacing EC NCPE chip the problem mantain exacly the same. Question. Does this chip need to be programmed ? Does anyone have a power up sequence for this board ? Any help at all ? Thanks |
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11-26-2020, 05:27 AM
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#2 |
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Super Moderator
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 5,702
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Re: Sony SVF152A29M DAOHK9MB6D0 Dead
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11-26-2020, 05:37 AM
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#3 |
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New Member
Join Date: Nov 2013
City & State: Amarante
My Country: Portugal
Line Voltage: 230VAC 50Hz
I'm a: Professional Tech
Posts: 5
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Re: Sony SVF152A29M DAOHK9MB6D0 Dead
I have schematics! There is no Power up sequence.
I have struggle to identify why NBSWON# does not rise. Thanks anyway. |
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11-26-2020, 07:56 AM
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#4 |
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Moderator
Join Date: Jan 2016
City & State: Valbonne, 06
My Country: France
I'm a: Knowledge Seeker
Posts: 2,735
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Re: Sony SVF152A29M DAOHK9MB6D0 Dead
Confirmed it's not a power button problem?
Did you try toflash the BIOS? +5V_S5 and +3V_S5 present? |
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11-26-2020, 08:22 PM
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#5 |
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New Member
Join Date: Nov 2013
City & State: Amarante
My Country: Portugal
Line Voltage: 230VAC 50Hz
I'm a: Professional Tech
Posts: 5
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Re: Sony SVF152A29M DAOHK9MB6D0 Dead
Hi Piernov
Power button checked and OK +5V_S5 and +3V_S5 present! After flashing Bios chip "NBSWON#" becomes high board starts up. Many Thanks for your help. Best regards |
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