Usually on a projection TV like yours blinking, the CRTs are getting weak, turning up the screen controls (front behind cover) will get it to stay on sometimes for a while, but its on its last legs.
The AKB circuit detects the weak CRTs (Auto Kiney Bias) and causes the blinking turning up the screens (G2 voltages to the red blue and green) allows it to stay on sometimes till they get to weak.
I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771
I have over 10 years experience in electronic tech support.
I
know this isn't what you want to hear, but the problem you've described
can't be fixed with troubleshooting. Your TV will have to be repaired.
There is a part that has developed a defect and needs to be replaced. If
you're still in warranty, the TV will be repaired at no charge to you.
The warranty would likely be at least one year from the date of
purchase from the manufacturer. If you purchased an extended service
plan they will repair the TV at no charge as well.
If
the TV is no longer in warranty, it will likely cost a minimum of $150
parts and labor. This is assuming that you only need one circuit board or small part. If the problem is more than one of the circuit boards, the price of
repair could go much higher.
I hope I've provided you useful assistance and that this information
allows you to make an informed decision as to how to proceed from here.
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Please let me know if I can be of further assistance.
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