Hi!

Your procedure saved this laptop, it works now!
First i want to say, that of course i checked the screen with flashlight and there was no info on it. I also checked with external monitor on both VGA and HDMI outputs.
When i said "some kind of reset", i meant that from an angle the black looked different when it was off or on.
Now, the solution. CMOS recovery worked OK, but with a catch.
On a Russian forum i saw that someone succeeded after pressing the Fn + R keys.
I tried that and bingo! Beeps, etc and in a few minutes i got my laptop...

Hi!

I know it is an old thread, but i have the same problem and maybe i'm in luck.
So... I have a Lenovo G50-45 with AMD A8-6410 CPU and Radeon R5 graphics.
The laptop is turning on, power led goes on but the screen is black. From an angle, i can see some kind of reset on the screen when i power it on, but no backlight or any info.
I can turn off the laptop with a long press, but it turns of and restarts after 25 seconds. Fan does not spin, but USB ports are powered also.
To me it seems a corrupt BIOS, i would reprogram it, but my hot air soldering station...

Re: Sony KDL-48R550C, need comments is it Panel FAILURE?

Hi all!
I know this is an old topic but i have exactly the same problem.
Here's what i tried:
USB blind upgrade. I succeeded but still no joy.
I cut MON_R and MON_L as in the video. No picture....
I have the following voltages:
VIN_12V 12.4V
VCC_3.3V 3.3V
VCC_1.8V 1.8V
VCC_1.2V 1.2V
The secondary voltages are all missing. I can see a small spike when the backlight starts, but other than that, only a few mV stay there.
On the following lines i don't have voltage:...