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DeathsShadow
Paper Tape
Posts: 4
Registered: ‎11-02-2019
Location: US
Views: 397
Message 1 of 8

Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

I have recently purchased and installed a new battery for my old laptop hoping I could get away from the wall with it as it's previous battery had died some time ago and in order to use the computer I had to have it plugged in like a desktop. After installation I booted the laptop up while plugged into the wall. The battery was displayed as charging. I believed this was a good sign. I let it charge till it read "100%" and then unplugged it to test the battery. The moment I unplugged it from the charger the screen went black... But the computer did not die or shut off. The fans were spinning and I could turn volume up or down using my keyboard and find it different from before unplugging. It's as if the screen is just off. Like turning a monitor off on a desktop, you still have full access you just can't see anything. To answer some people's questions in advance; yes, I am sure it's not a brightness problem. The screen is 100% black and changing brightness on my keyboard will change the brightness but not visibly, only after I plug the charger back in will I see any difference. I have googled and youtubed this problem. I watched the following video(which is exactly my problem as seen in the video), but as you will see it's a Lenovo Yoga 90013 and has different drivers to change than my pc. https://www.youtube.com/watch?v=bGIQxdQrkpk

If I could receive assistance on this it'd be great! As I said it's not a battery problem, I recently bought and installed one from BestBuy

 

Thanks!

Support Specialist
Posts: 199
Registered: ‎11-04-2019
Location: US
Views: 313
Message 2 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged


@DeathsShadow wrote:

I have recently purchased and installed a new battery for my old laptop hoping I could get away from the wall with it as it's previous battery had died some time ago and in order to use the computer I had to have it plugged in like a desktop. After installation I booted the laptop up while plugged into the wall. The battery was displayed as charging. I believed this was a good sign. I let it charge till it read "100%" and then unplugged it to test the battery. The moment I unplugged it from the charger the screen went black... But the computer did not die or shut off. The fans were spinning and I could turn volume up or down using my keyboard and find it different from before unplugging. It's as if the screen is just off. Like turning a monitor off on a desktop, you still have full access you just can't see anything. To answer some people's questions in advance; yes, I am sure it's not a brightness problem. The screen is 100% black and changing brightness on my keyboard will change the brightness but not visibly, only after I plug the charger back in will I see any difference. I have googled and youtubed this problem. I watched the following video(which is exactly my problem as seen in the video), but as you will see it's a Lenovo Yoga 90013 and has different drivers to change than my pc. https://www.youtube.com/watch?v=bGIQxdQrkpk

If I could receive assistance on this it'd be great! As I said it's not a battery problem, I recently bought and installed one from BestBuy

 

Thanks!


@DeathsShadow

 

Welcome to the Community Forums! Glad to have you here.

 

We would just like to get additional details from you about this concern for this to be sorted out properly.

 

  • Have you already tried to connect the device to an external monitor?
  • Are there any updates that's been installed/downloaded on the device?

Let's try to identify if it's a hardware/software issue. We can perform some steps for this to be isolated.

 

Performing a power drain to your Y40-80 laptop is one of the steps that can be performed here. To do that:

 

  • Remove any accessories that's connected to the device
  • Press and hold the power button for at least 10 seconds until it's off
  • Connect it back to the AC adapter/charger and turn it back on again

If the issue still occurs, try to access your computer's BIOS settings, it can be accessed by:

 

  • Completely turning off your device.
  • Continuously pressing the F2 button as soon as you turn it back on again.
  • Once inside BIOS, try to connect/reconnect the adapter/charger and check if issue will still occur.

Please update us on how things will go through. 

 

Regards.



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DeathsShadow
Paper Tape
Posts: 4
Registered: ‎11-02-2019
Location: US
Views: 299
Message 3 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

Hello, thank you for getting back to me. 

 

I have connected my laptop to an externa monitor via hdmi. I duplicated it with the power plugged in and both screens we identical. But when i unplugged my charge cord my laptop screen went off. But not the external. It remained on as if nothing had happened. 

 

I do have the latest windows 10 updates. I have recenntly installed a new ssd in the laptop replacing the stock hard drive. Thus I have an entirely new set of windows. I have also reset my BIOS to default.

 

I have done 4 complete power drains. Including removing my battery to power drain the motherboard. 

 

While in the bios I have unplugged my charge cord and again the monitor turns off. Nothing dies. I can plug the charge right back in and it's as if nothing happened.

 

Anything else you need just let me know

Support Specialist
Posts: 199
Registered: ‎11-04-2019
Location: US
Views: 280
Message 4 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

 

Hi again @DeathsShadow!

 

Since you've also mentioned that the laptop's display also turns off inside BIOS menu after removing the adapter, you can try removing the adapter from the laptop again and may use a pen light to see if there's a faint image that'll reflect on the laptop's display.

 

If you're able to see an image after doing this step, this means that electricity signal that the laptop's screen is getting is not enough or sufficient to power on the screen itself. However, not seeing anything on the screen after doing this might indicate that the screen/display itself is broken.

 

With that, this could also mean that this is indeed a hardware issue, specifically with the motherboard and may require repairs for it to function properly again.

 

You can check this link to see the list of Lenovo certified repair partners that can assist or help you in repairing the device.

 

Thanks!

 



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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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DeathsShadow
Paper Tape
Posts: 4
Registered: ‎11-02-2019
Location: US
Views: 261
Message 5 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

Hello thank you!

 

I see now that when I unplug the charger I can still see a faint background of my screen. But not enough to read and do things on even on full brightness. 

 

What would you say to do at this point?

Support Specialist
Posts: 199
Registered: ‎11-04-2019
Location: US
Views: 246
Message 6 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged


@DeathsShadow wrote:

Hello thank you!

 

I see now that when I unplug the charger I can still see a faint background of my screen. But not enough to read and do things on even on full brightness. 

 

What would you say to do at this point?


Hello there!

 

Since you've mentioned that the display is still dim even when inside BIOS menu/mode, this means that your laptop's LCD needs to be repaired as it may seem that it is a possible LCD or backlight issue.

 

You can use the part number 18201580 to get/order a replacement LCD or you can go to this link to purchase one.

 

Please also check pages 74 up to 77 of your device's hardware maintenance manual to see the steps on how you can remove it.

 

Regards.



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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DeathsShadow
Paper Tape
Posts: 4
Registered: ‎11-02-2019
Location: US
Views: 232
Message 7 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

Right, but when I have the pc charging the screen works fine... why would that mean that my screen is broken?

Support Specialist
Posts: 199
Registered: ‎11-04-2019
Location: US
Views: 120
Message 8 of 8

Re: Y40-80 Laptop (Lenovo) - Type 80FA blank screen when unplugged

 

 

Hello again @DeathsShadow!

 

We can confirm here that there's indeed a problem with the LCD/screen itself.

It is still getting signal to show images on the screen but the power that it's getting isn't enough to power on the LCD backlight itself.

 

You can use the part number that I've given on my previous replies to check it's availability.
Please do use this link as well to see the list of stores that can also assist you on repairing the device since there might other parts as well that aren't working properly aside from the LCD.

 

Hope this clears up everything. Regards.

 



Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

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