When power button is pushed, green light flashes a couple of times but tv will not come on

This idea may be worth a try. Look at the buttons on your remote. If you see a button that is marked "TV" give that button a push and then give the "Power" button a push. Wait for a while! sometimes this takes a while to turn the TV on or off. You may have to do this a couple of times depending if the power was off or on when you started doing this. If you started with the set off, sometimes it takes a while for the set to turn on.

sounds like grit in the lens mechanism..... but is it worth enough to get it serviced?

Your TV is going into fault protection mode. The Uf capacitors on the PSB-Power supply boards are blown. Recap the Uf caps on the PSB.

Sounds like a faulty power supply. Consult warranty guide if its still under warranty, if not, you really need to consider calling a repair technician

Hi there, I have a Mitsubishi HDTV 1080 and when I tried to turn it on the tv this morning it wouldn't turn on and the power light is flashing green. I pushed in the reset button but it just keeps flashing and still won't turn on.

that is a common problem with this rca's check the convergence board for a short circuit
more likely is a transistor or an convergence ic

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so the sound of mouse click is from the button being pushed.
is the light flashing codes at you in the form of flashing?
looks like you may have a short in the p/s.

when we push power button the green light flashes as if thinking about turning on and nothing happens, any way to fix this? 

on the signal board replace the caps by the 5/9 volt regulators. c2p04 is the main culprit. 6 caps in total can be changed. I believe c2p05 also.