Hi all this set power on and the ambient lamps lite but the screen is black and no sound i tried Samsung way to test backlight but it did not work i did also try to power of and hold power for some times nothing happened
on power supply big capacitor :394v on tcon the 12v and 3,3v even on Mainboard...

Hey guys, bit stumped with this laptop after replacing 2 blown components i.e., MP86493, MP2979A.

To begin with, this laptop was dead-dead.

Now with replaced (visibly) blown components, i do get some progress; after connecting battery or main cable;

• am getting white power led
• 5-long-flashes on CAPS Lock and NUM lock
• then, fan full speed
• CPU heats up some (smaller die PCH, does not)
• always constant black screen no matter what's tried
• no USB recognition
• no HDMI output

this is as far as I can get with it and not sure where to inspect next ?

I tried...

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