Check your fans, sounds like a thermal shutdown. The fans are 12vdc with a sense line. Red and black power, blue is the sense line. disconnect the fan connector and check the fan with a 12vdc supply. then check the sense line for signal feedback.
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if unit runs ok for 3 to five minutes then completely shuts all power lamps off , then its hi temp limit sensor (safety) has been tripped , this usually goes out due to failure of main temp control , in point of fact contacts in temp switch literally weld them self's together and cant separate to allow heater to control temp
The ambient temperature in the room is to high. Try lowering the room temperature. If that doesn't work get a small fan and place it near the projector to provide extra cooling. The projector is running border line on high temperature and just needs a little extra cooling.
The lamp reset...should only be used when you replace the lamp..with a new one...The reset will start the clock running on the number of hours the new bulb has used..
if the fans don't turn on, they may be bad and needs replacing or rewired. if the fans turn on but not the lamp, the colorwheel may be bad (listen for a high-pitched whir when you switch it on. if no whir, replace the colorwheel). if the colorwheel is ok, replace the lamp.
5 blink indicates - AKB circuit (AKB), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. Also unit be in IK blanking, try turning up screen slightly.
i have the same t.v. the owners manual says "if the light blinks 5 times, pauses, and blinks again 5 times, the lamp is trying to turn on.If the t.v. does'nt turn on after 5 minutes and the light blinks steadily for 1 minute , one of the following is possible: lamp door is open , lamp is dead , or the power supply within the t.v. needs service.
All symptoms in your TV shows that you need to replace its Lamp as it has been consumed its life hours and TV requires new lamp. Lamp can be obtained from Sony Website. Price is $200, Hope this info will help you to enjoy your Sony TV in coming days.
DLPs have flow chart trouble shooting techniques to pinpoint exactly why your set isnt completeing the boot sequence. If you would like the service manual for your model let me know and i will post a link where you can purchase a complete one.
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