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Hello If the power light is ON and status light is OFF; check if any objects are blocking the air inlet or outlet grill, and remove them if any, and carry out the following.  Unplug the power cord from wall outlet.  Make sure that the projector has cooled off.  Plug the power cord into the wall socket.  Press the power button. Check whether the cooling fan has stopped. The problem is with overheating itself. If these does not help you, your projector need service. OK.
if the Lamp error and Temperature error lights are flashing red this means that there are two separate errors.
flashing lamp light means the lamp failed to ignite. It could be a lamp
driver problem or lamp failure. Replace the lamp to resolve the issue.
If the issue is not resolved, then service the projector.
A flashing Temperature light signals a fan error. Turn the projector
off and allow it to cool down. If the light is still flashing after the
projector is turned back on, service the projector.
Sounds like the lamp might have blown. Sometimes the projector can't tell if the lamp is blown, so the usual red indicator light doesn't show.
After the projector is on, if you push menu on the remote do you see anything? Maybe the brightness is just turned down all the way. If you see no menu when you push the menu button it's time to inspect the lamp.
Open up the projector and pull out the lamp. You'll probably need a screwdriver to remove the cover, and then another screwdriver to unscrew the lamp and pull it out. Be careful not to touch the bulb's insides. Is the lamp on the inside of the fixture bulbous, or cracked. Look closely.
when you replace old lamp with new one the lamp timer not reset automatically the counter is a software data and you reset manually with remote control
HOW :Connect the power cord to the projector. The ON/STANDBY indicator light in red
Use remote control and press the following key on the remote control in following order for less than five second each.
RESET +LEFT ARROW KEY+ RIGHT ARROW KEY+ENTER (as show in picture)
Does the status light stay on red? If it does then the lamp timer has exspired and will not let the projector turn back on until it is reset, at which time you should replace the lamp. To reset the timer you need the remote control, with the unit plugged in in standby mode hold down the power off button for 30 to 45 seconds until the status light goes off.
When the lamp exceeds 2100hoursof service, the projector cannot turn on and the manu is not displayed. Do the following: For VT670/VT470 Press the help button on the remote control for a minimum of ten seconds. For VT570/VT47 Press and hold the power and the exit buttons on the remote control simultaneously for a minimum of ten seconds. When the lamp time clock is reset to zero, the lamp indicator goes out. Hope this helps! :]
If it is a lamp error try this: When the lamp exceeds 2100 hoursof service, the projector cannot turn on and the manu is not displayed. Do the following: For VT670/VT470 Press the help button on the remote control for a minimum of ten seconds. For VT570/VT47 Press and hold the power and the exit buttons on the remote control simultaneously for a minimum of ten seconds. When the lamp time clock is reset to zero, the lamp indicator goes out. Hope this helps! :]