Hi and welcome to Just Answer. I am sorry to hear about your TV.
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There are only a few things you can do with these players. You certainly can't pay to get them fixed because they are literally 'throw away technology'. An hour of labor time would far exceed what the DVD player is worth.
That having been said, I would open up the player and visually check the inside for anything obvious although with a problem like yours, I doubt you are going to find anything. Check the wiring and connections to ensure that they are sound.
Then you should use a cleaning DVD to give the lens a clean.
There really isn't much else you can do. Sorry.
I will be here if you have a follow up question.
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