My tv keeps shutting down it asks me to check air flow

Could be the fan. It will cool tv but could also be to much for tv to handle.
You can also try reseating the lamp. It may say ok but be wrong.
I have a Mitsubishi 5500 projection tv . have had the type of issue you have had and I have replaced a lamp as well.had to reseat the lamp three times before it worked without shutting down.
Hope this helps.

If the computer is overheating it will shut down to save the hardware from heat damage, the temp is pre set. It may get hot, due to air flow in a minute or and hour. What does the "screen comes up says problem " say? Check the fan and vents for dust and clean, improve air flow around bottom vents and side vents. Perhaps a Laptop Cooler? When the computer shuts down unepectedly, the computer see it as a crash and will load in that option screen. Run a 'Check Disk" on the OS drive buy opening computer in start menu, right click the drive with the OS (C), open properties, Tools, Check now, choose all options, follow instructions, reboot.

my laptop shuts down when it overheats, once I keep air flowing, it seems to do just find. How is your fan, and air circulation? Just a shot, I'm sure there may be a more internal answer, but check it all.

you need a new power supply unit these after some time get old and start over heating causing the tv to heat up intermediately if you take it to a repair shop and have that replaced it will be like new again

In the 65" TVS there are 4 or more fans One of these is not functioning Probably the one over the power supply itself This will cause it to heat very quickly and shut down in a matter of about 20 seconds.

only way to find out which fan is not working isw to remove the back.

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http://www.aa1car.com/library/overheat.htm
Troubleshooting advice above link.
Sometimes it is the head gasket, check, it can be, incorrect fuel mixture, far too lean, exhaust should be a light grey color. Check enough oil in sump. ensure free flow of air all around machine.

Increase air flow with a fan into the TV to check for overheating.
Did it have a quiet fan that may have stopped?

open the back of the television to check for dust buildup on the heat fins and other components. As well as the fan.

Hello ags98,

First I would suggest that you re-seat the bulb and then check the cooling fan, and air flow path. In addition to checking the fan make sure all air flow ingress and egress vent are unobstructed.

I hope this helps

Thank you,

Shuttle83

There is a fan in the back. Make sure that the fan is spinning and that the grille is clean. It is possible that the sensor is bad too.
Keep us posted.

Dan