Originally Posted by Davew0670
I think my tv just started doing this. Get nothing but green light flashing and then back to red. No bulb or temp light at all. Can hear faint hum like something is trying to start. Could that be the ballast?
My PT-40LC12 is doing the same thing, but only occasionally. After a few restarts, the bulb finally ignites and the TV works.
First thing to make sure, is that you have a good bulb. If the bulb is bad or will not ignite, it will go through the blinking sequence you describe.
If the bulb is good, then the ballast is probably bad. You should hear some clicking, like a spark trying to ignite the bulb. There is a ballast repair kit available, described on this thread.
If that doesn't solve it, then the next item of failure is the power supply itself.
As a side note, I compared the components used in the PT-50LC13 ballast, and seems to be similar to the ones on the PT-40LC12 ballast. Therefore, I also ordered the LSUC0022 kit, and will replace the components on my PT-40LC12 ballast when my TV finally doesn't light up. My ballast is buried inside the TV, whereas the PT-50LC13 ballast is more exposed and easier to get to. When I finally do this, I will try to document like brogers did.