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Lenovo Yoga 2 Pro wont turn on, won’t power on, no display, black screen problems

Laptop Lenovo Yoga 2 Pro won’t turn on, won’t power on, there is no display, just a black screen. This is a general diagnostic and repair steps to fix those problems.

Troubleshooting laptop Lenovo Yoga 2 Pro won’t boot, won’t power on, no display just black screen

When you push on the Power Button the Power led lights ON or NOT, your Lenovo Yoga 2 Pro won’t start up, and there is no display just a black screen. Possible problem and the fixes steps:

Battery has no charge left + AC adapter failed; you press the power button on laptop Lenovo Yoga 2 Pro nothing happens, laptop won’t turns on and there is no display, the battery has no charge left, the motherboard doesn’t receive any power, laptop cannot turn on. You plug in the AC adapter but that doesn’t help, your laptop Lenovo Yoga 2 Pro still won’t power on, there is a chance you have failed AC adapter. In this case try with another charger or check AC adapter with a Multimeter. If it’s dead, replaced with a new one.

Power circuit in wrong state or Over volt protection trips; you press the power button but nothing happens, laptop Lenovo Yoga 2 Pro won’t turns on and there is no display just a black screen, your laptop has static electric charge made power circuit in wrong state. Unplug AC adapter, take out the battery and hold down power button for 30 seconds, the static charge will dissipate. Plug in the AC Adapter and turn on your laptop Lenovo Yoga 2 Pro. This should restore the system to normal operating mode.

Hardware failure; the laptop powers on, but there is no display just black screen with Power led lights ON or your laptop Lenovo Yoga 2 Pro stock on logo or restart. In this case, it’s possible one of the Hardware failed. You can try to disassemble the laptop to bare minimum and try to reseat the hardware one by one and power on the laptop every time you reseat a hardware, to know the failed one, replace the faulty hardware.

Screen faulty or bad video cable connection; laptop Lenovo Yoga 2 Pro turns on, but screen is black, with Power led lights ON. Test the laptop with an external monitor connected to the HDMI port, VGA port, press the appropriate key to switch to it. If the external monitor works fine and load the operation system, most likely you have a faulty screen or bad video cable connection. Check them and replace the faulty one.

BIOS failed; Laptop Lenovo Yoga 2 Pro won’t turn on at all, if the voltage 19V, 3.3V, 5V OK  and electronics components on the motherboard are good, there is chance you have failed BIOS. There is a signal test confirmation on EC/SIO pin name RSMRST# . This pin must available 3.3V(tolerance 10%) than Bios Confirmed OK. If the test failed reprogram or replace the BIOS chip.

Laptop Power System has problem: Laptop Lenovo Yoga 2 Pro won’t turn on at all, probably some electronics components or chipset on the motherboard failed;  Disassemble the laptop and take out the motherboard. Ceck No burnt marks visible on the mainboard. Check chepset temperature (CPU,  GPU, Power-Supply IC …). Check power jack. Check motherboard receives 19V. with a Multimeter measure voltages on coils, check for any components shorted to ground.  checked 3.3v/5v is up and running?

If you  have 3VALW And 5VALW at coil. 3VALW should go to sio and from there you should get 3v at power button. Check SIO for corrosion,shorting or any componenets which looks suspect. Check 3 & 5v SUS voltage.

Will need an electronic boardview or Schematic Diagram for Laptop Lenovo Yoga 2 Pro. The failed electronic component has to be replaced.

Note: (In the comments we will be updated electronics components failure).

Motherboard dead; The Lenovo Yoga 2 Pro motherboard has to be replaced.

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For other Lenovo Yoga 2 Pro problems check the comments or write a comment.

Download Free Lenovo Yoga 2 Pro schematic diagram

The document is PDF format; include the electronic schematic diagram for Lenovo Yoga 2 Pro laptop. We are offering you this diagram free of cost. You can find also many other different schematics diagrams on our site which are free of cost. A schematic diagram is used to describe the design of equipment. Schematic diagrams are often used for the maintenance and repair of electronic and electromechanical systems.  As you know that in other various sites downloading any diagram is very difficult. But at our site, you can download it with great ease.

The electronic schematic diagram will help you to troubleshooting laptop Lenovo Yoga 2 Pro power system problems.

Lenovo Yoga 2 Pro schematic diagram Download links:

Download link 1: Lenovo Yoga 2 Pro Schematic Diagram

 

If you want any other diagram which is not available on our site you can leave the name of that diagram in the comments. We will update your required diagram as soon as possible.

Please: If any download link not working inform us by comment.

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Troubleshooting Laptop Power System

How to reprogram (Flash) Laptop BIOS

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