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Tv projection lamp have a life span like any other bulbs light sources.Tipically life spans of these tvs projection lamps are around 20,000 hrs of useages.That average out like about 1 1/2 or 2 years and around 4 or 5 hours of the tv is on and watching it everyday.Now the front tv bazel frame of the tv.The word "LAMP" LED light indication is on or flashing are indication of the tv projection lamp life span are over and the tv must have it projection lamp to be replacement to another tv projection lamp.Projection Lamp fillerments tipically dies out when it reaches it life span.Mark or burns on the projection Lamp,will not show or be there,if the tv projection lamp run it natural life span cycles.
It time to replaced the tv projection lamp again,the tv projection lamp life span have ended.The tv projection lamp life span only last 2000 hrs.Average out like 1 1/2 or 2 years max for tv on watches 4 or 5 hrs of tv every days.
If the lamp and standby lights are both flashing and the timer light is off, check that the lamp cover on the back of the TV is properly positioned in the groove and secured by the screw. Take it off and check that the screws that hold the lamp itself are secure. There is an safety feature that keeps the lamp from turning on when the lamp cover is off.
If the three lights (timer, lamp, and standby) are blinking, then the lamp needs to be replaced. If the timer and standby lights are blinking and the lamp light is off, then a cooling fan isn't working. When only the standby light is blinking and the other lights are off, the unit is overheating and a ventilation area may be blocked.
Did you reset the hours on the lamp with the menu options on your set? Sometimes, if you do not do that it can mess with the tv performance thinking that its over hours.
It needs to be reset to 0 again...
You need to open the lamp housing door and take the lamp tray assembly out to visually inspect the lamp itself... If the lamp is blown it will be obvious and replacing it should restore normal operation. A shop can do this on a single home visit.
The second part of your question has to do with the unit cycling (turning on/off a couple of times) This is because the lamp detection circuit is finding no load on the lamp circuit. Light is not lighting - - - Tv shuts down. This is merely a protection from causing other damage or more damage. The circuit doesn't know why there is no load volatge just that there is none.