J&L can probably fix but will not be the cheapest option. Don't rule out buying a whole replacement console on line ($110).
Take it to Video games new york. J & L is a great retro store, but it's a little bit expensive. Video games new york can probably fix it since they have really old game and systems. However when it comes to repairs, you first have to pay a $25 non-refundable deposit
Open up and clean connectors.
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