when i tun the unit on it boots up fine but takes half hour for the lcd to come up.i tryed checking to see if thre was a faulty connection non. i also replaced the screen it worked fin for a while and back to the same.when it does come up its very faint in some selections.
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Your only alternative is to send it to the authorized service center. They will not supply parts or schematics.
If you are not keen on diagnosing the electronics inside, I would echo the service center idea.