SOURCE: Aspire 5920 will not switch on.
It's more than likely a cpu / motherboard issue, but you should try:
reseatting / swapping the memory
booting without the cd, hard drive, battery plugged in.
Most of the time I see that problem when the motherboard has gone out.
Keep it simple- Use the flash light test to see if you have no back lighting in which case then you have to replace the inverter board. And if it is not that board then your issue probably lies with your t con board.
Inverter board powers the backlights.
Testimonial: "I changed the power board. my model has the inverter board and power board combined."
It is 12 volts and also 24 volts DC, never check it without a load on it as it can damage the inverter circuit.
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