I HavE tRied remoVinG anD reinsertiNg The Ram and also started without batTery and also checke inveRter there is no sigN of aNy Burn of capacitor or resistor anD Hard Disk is gooD, i trIeD thiNK pad connecting to external monitor but still no display on screen what can be the problem if it is the inverter than how to check the circuit is good or not
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shridhar, if you have no image on an external monitor it is usually the GPU (part of the logic board) that has failed. It would require a replacement of the logic board. You do want to make sure that your computer is booted up.
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