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Thanks for picture, I'm working on it and get back to you in 15 minutes.
Board replacement is plug and play type work, no soldering is needed and yes, unplug ribbon cables on E Buffer board, clean the contacts of ribbon cable, replug and check if it helps or need to swap E buffer board, another possible suspected board is logic control board which is rectangular located on center of rear of panel and five flat ribbon cables are plugged into it.
OK, so got progress by cleaning the connections, nice!
Please check the ribbon on sides of screen where the black horizontal line appears and clean the connections, reply back with the result.
I hope pink haze would go away in few days as plasma panel tends to leave burn mark with stuck lines, please make sure to adjust the Vs volts as per printed on label pasted on back of panel. Glad to know that problem is resolved.
Please feel free to respond if you have any additional questions.
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