prmprm

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#1
Hi guys, I'm new here and really hope I can get some help :)

I was using my laptop normally (Samsung np-sa31, Bremen - M motherboard), I turned it off, by pressing the power button and then closing the lid if I remember correctly since I was in a hurry.

After coming back to the device, the screen just wouldn't turn on! It just stayed black.

I tried everything. Messed around with the BIOS, reconnected the LCD cable, repositioned the RAM sticks and tried to run it with only one of the sticks, removed the CMOS battery and then placed it back, tried to clear static via power button, and much more, INCLUDING buying a whole new screen! The same problem still persists.

The laptop is fully working when connected to an external display via VGA cable, you can see everything on the screen when you flash with a flashlight on it (same for the original LCD and the brand new one I bought).

I have no idea what's wrong. I fully disassembled the laptop and I will add imaged of the motherboard, to me, nothing seems out of place and no fuses are burnt (the heat sink was removed for the sake of the photo), but maybe you guys will know what to look for and I'm just missing something.

https://pasteboard.co/ogkZ1xfYLAkd.jpg

https://pasteboard.co/P9Zqc2IouPl1.jpg

Thanks!
 

Laptop repair Latest videos

Latest threads

HOW TO UPGRADE DPOX180H-FNIRSI FIRMWARE TO FIX ALL ISSUES

HOW TO UPGRADE DPOX180H-FNIRSI FIRMWARE TO FIX ALL ISSUES
Digital Phosphor Dual Channel Handheld 180 MHz Oscilloscope


修复问题:
1:能够看到方波上升下降的垂直线
2:修改了垂直电压光标测量的名称
3:修复开机语言
--------------------------------------------------------------------------------
Fix issues:
1: When measuring a square wave, you can see the rising and falling vertical lines.
2: Modify the name of the vertical voltage cursor measurement
3: Modified the text of the switching language interface.
--------------------------------------------------------------------------------
修复3点:
4:信号发生器频率问题
5:个别固件升级变砖问题
6:暂停后只显示单帧波形,便于分析协议
----------------------------------------------------------------------------------
Fix the problem:
4: Signal generator frequency problem
5: Some devices cannot be turned on after firmware upgrade
6: After pausing, only a single frame waveform is displayed, which is convenient for analyzing the protocol
-----------------------------------------------------------------------------------

2023/09/27 V40 LATEST VERSION
------------------------------------------------------------------------------------
修复内容:
7:波形更细,更清晰,降低了波形粗细
8:方波垂直线更亮,更明显
-------------------------------------------------------------------------------------
Fixes:
7: The thickness of the waveform is reduced, making the waveform thinner and clearer.
8: The vertical lines of the square wave are brighter and more obvious
--------------------------------------------------------------------------------------

Upgrade steps:
WATCH THIS VIDEO

DPOX180H FIRMWARE DUMP FILE OK V4.0 W25Q128

DPOX180H FIRMWARE
DUMP FILE OK V4.0
W25Q128 CHIP (16MB FILE)

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