It depends on your skill level. First check the manual and see what the flashing green light means. Electronics on a whole don't do well from lack of use especially if the humidity is ether high or low. Moisture creeps into contacts and oxidizes them causing poor connections. Possible disassembling and reseating all the delicate connectors may possibly fix your issue. Taking it to a professional or BenQ is most likely too expensive to make it worth it.
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