Dead motherboard please help

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Dead motherboard please help

Postby julypop » Fri May 05, 2017 3:48 pm

Hello all, we have a Toshiba L850 laptop and there is no power at all. The battery is good (new) the AC adapter is good (also new) The laptop has an intel i5 processor so we would still like to make use of it as we feel its still semi up to date.
When plugged in and the power button is pressed, absolutely nothing turns on, not even LED lights.
When the laptop is plugged in there is no LED indicating a charge taking place.
So we have taken the laptop apart and my husband has a multimeter so he tested where power goes into the laptop motherboard. There is power at the cable connection.
We read on some other websites to remove the CMOS battery for a few minutes (didnt fix it)
We also read that we should remove the battery and hold the power button for 30 seconds to drain any short circuits (still didnt work)
What else should we test on the motherboard and what voltages should we be getting at the points?
We don't see any removable fuses.
We understand that buying a new laptop may be our best option but we would like to at least narrow it down to what the problem is on the motherboard, at least for the learning experience.

I have included some pictures here
Thanks in advance for any input and advice
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Re: Dead motherboard please help

Postby evasive » Sun May 07, 2017 12:18 am

How did it end up in this condition with you? Has it ever worked before? If so, what happened to it before it stopped working?
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Re: Dead motherboard please help

Postby Karlsweldt » Sun May 07, 2017 5:36 am

Could the unit have been put in "sleep" or "hibernate" mode? May be a certain key combo or process to bring it back to normal use. Check the user manual about that feature.
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Re: Dead motherboard please help

Postby Copper » Sun May 07, 2017 7:38 pm

Ive Looked at the Pic, and that CPU is a Pentium processor its NOT an i5 CPU. the way you describe the fault sound like a memory module had failed or a memory channel on the chipset has failed, if its the latter then is a bin job
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