Re: Power button flickers but projector won't power on
I had pretty much the exact same problem, I could hear the fans turn barely on when plugging in, but it wouldn't power up. If you look at the power light in dark conditions, the light was doing a rapid flicker. My power supply had failed. I tried to get a replacement board, but the part is no longer available. Projector Doctor would fix it for $395, but there is a person on this board who goes by Neo32 on here and gtitubro on ebay that fixed it for me for $150. I'm a satisfied customer :-)
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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.
Reset the lamp hour meter. Unplug the unit in the main power outlet then turn on the main power switch on. Press and hold the ON, stand by, menu and Input buttons at the same time the buttons are on the projector. Though the same buttons are found on the remote control, the reset only works with the projectors buttons.Plug the power cord back in to the outlet while holding the buttons ON, STANDBY, MENU, INPUTS buttons at the same time, the lamp timer will reset when the projector receive power. Good day and best regards.
If you replaced the lamp already, chances are the ballast is defective. When you power on the projector with the power button you should see a flicker of light in the lens, or an electrical sound. If you don't you ballast is bad.
l6. After you install a new lamp, select the lamp Usage icon and press and hold
the "Power On" button on the remote control for ten seconds to reset the
lamp time clock to zero.
NOTE: If resetting the lamp clock back to zero after 2100 hours of service,
press the "Power Off" (not "Power On") button on the remote control for ten
This works on a couple different Toshiba models -- might work on yours...
Make sure the main power switch is OFF. Hold the "ON", "MENU", and "INPUT" buttons at the same time and turn the main power switch on. Keep them held until the yellow power standby light comes on, then let go. It is done.