I think, it's my way of seeing nothing else, but you have to measure the SCREEN and see how it behaves, it seems to me that you have to change the fly.back ... Well it's my opinion, faults like these are half complex, In addition to the mistakes CLEAR has to clean it ... I repeat changing the fly-back is what I would do since it seems to me that the tension of SCREEN is unstable ... I will see if I find a good development of the topic by there, but you have to enter service mode and in AKB you have to take the zero and put the one, or vice versa or something like that, I do not remember ...
greetings if you turn on the TV and it is perfect or with antenna signal has a good image the three colors are displayed the blue red green these tv to be exhausted the tube is protected try to change the channel or change the channel and see if it stays on while changing the channel and if you have another screen try saying hello