My tv will turn on but with white light line then shut off itself

Dear User,
People who have faced such problems have tried sticking th epower plug (Going into the TV) a little harder and the thing never went off again.

If this is not the case, then it could be the cat5 network cable. Try keeping it out and observe.
Let us know further
Regards,
Sid

Bad power supply board !!!

is there any sound? Did you order the exact main board part # as your original board?

Samsung Mod. HL-4663W turns off by itself. Started later after replacing lamp.

your Audio output chip has gone south and shorts out after warm up The unit will shut off to protect itself you need a tech to replace it try Pinicle Service solutions in Haverhill ma

Ok, I had the exact same problem last summer, and Kevellen told me of a problem that Insignia tv's have: the circuit that controls whether the tv is off or on is messed up, and it can be fixed, but its not cheap.

http://www.fixya.com/support/t924975-wierdness_tv

Anyway, if the t.v. is still under warranty, I would say return it to the store and see if you cant get a new one, and from what I researched online after this incident, I will not buy an Insignia aver again.
hope this helps,
-Steve

Please count light flashing again. Light flash time is "0.3 Sec" and there would be pause (light Off time) for "3 Sec". Start counting after pause to next pause.

1 can you clear that you see white lines along with green light? 2is your set is totally dead?

capacitor problems in power supply or a regulater isolate the power suppley by disconecting the line output stage/unplug scan coils for example and run a 60w bulb as a dummy load one wire to earth and the other to rail voltage colecter of line output transister if the bulb glows steady the power supplys fine

Hi The problem is dry joints on the vertical output ic for sure(commen fault with sony),ime in the uk and 99% of the time i get a call about sony tv its allways switches itself off, caused by dry joints.