I have been asked to look at a plasma TV that developed this issue after we had a power cut locally a couple of weeks ago.
When i arrived at the house the TV was showing the solarised image.
I took it to my house and when powered on from cold apart from a few green sparkles on the dark colours the picture was fine. VA and VS measure 65v and 190v.
After 10-15 minutes the image starts flickering and the solarised image comes back, sometimes with bright white flashes other times very dark and sometimes just black with green sparkles.
I have sprayed the caps on the power supply and the YSUS and ZSUS with freeze spray as it seemed to be a time/temperature related issue but it doesn't seem to make much difference if any.
Any pointers would be greatly appreciated. Thanks.
When i arrived at the house the TV was showing the solarised image.
I took it to my house and when powered on from cold apart from a few green sparkles on the dark colours the picture was fine. VA and VS measure 65v and 190v.
After 10-15 minutes the image starts flickering and the solarised image comes back, sometimes with bright white flashes other times very dark and sometimes just black with green sparkles.
I have sprayed the caps on the power supply and the YSUS and ZSUS with freeze spray as it seemed to be a time/temperature related issue but it doesn't seem to make much difference if any.
Any pointers would be greatly appreciated. Thanks.
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