Hi,
I have a yoga 900 that recently started to turn off a few seonds after turning on. This happens every time - exactly like this (not my video, but identical behaviour: https://www.youtube.com/watch?v=4IsfofE4dBc&feature=youtu.be).
I have noticed that the fans don't start - sometimes one might rotate for a fraction of a second, but that's it. See video here: https://photos.app.goo.gl/Ty4GAb7BhEpzBUB19 - note when the light turns on by the power button for when the boot starts and turns off. I have measured 5 volts across the fan when the laptop is on (fan not spinning), but don't know if that implies faulty fan or if it received 5V always with on/off/speed controlled by signal cables. I have unplugged battery (with AC adapter disconnected) and held down power button for 30 seconds - this didn't help/do anything.
Does anyone know:
Thanks for any help,
DP
I have a yoga 900 that recently started to turn off a few seonds after turning on. This happens every time - exactly like this (not my video, but identical behaviour: https://www.youtube.com/watch?v=4IsfofE4dBc&feature=youtu.be).
I have noticed that the fans don't start - sometimes one might rotate for a fraction of a second, but that's it. See video here: https://photos.app.goo.gl/Ty4GAb7BhEpzBUB19 - note when the light turns on by the power button for when the boot starts and turns off. I have measured 5 volts across the fan when the laptop is on (fan not spinning), but don't know if that implies faulty fan or if it received 5V always with on/off/speed controlled by signal cables. I have unplugged battery (with AC adapter disconnected) and held down power button for 30 seconds - this didn't help/do anything.
Does anyone know:
- If the fans should always be on during boot (and therefore if I have faulty fans/replacing the fan unit would help)?
- What the issue might be if not fans?
- Anything else I should look for/test?
Thanks for any help,
DP