Facing TV Problems? Ask a TV Technician.
When the TV fails to turn on, do you get any blink error codes?
What colors are they blinking?
Do they blink fast or slow?
How many times do they blink?
Yes, and I see you have replaced the ballast too, which is another possible cause of this blink code...
Have you measured any of the high voltages at the lamp when it tries to fire up?
Might be worthwhile, just to make sure power is definitely getting there.
Another possibility is if the lamp door is not correctly fitted, or if the sensor does not detect it - this will also prevent the ballast from firing power to the lamp, and cause the lamp light to blink.
You can also tell a lot about what is going on just by listening - when you press the power button, look and listen through the vents where the lamp door is. What do you hear when it tries to start?
Listen for the following: 1 A fan coming on. 2. The color wheel starting - a slight whining noise. 3 A buzzing sound from the ballast, around three times.
In order for the lamp to light up, these three things need to happen: the fan has run, the color wheel has to lock at a certain speed, then the ballast assembly will fire the lamp. If the color wheel has failed then the lamp will not fire up.
A faulty color wheel is a common failure in these older TV sets.
Yes, a low voltage would cause that to happen.
I'm out of ideas at this point, so I'm going to see if the other TV experts have any additional TV input.