Question Panasonic tx42as520b 14 green blinks

Jun 21, 2020
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I have a panasonic viera lcd tv which gives the 14 green blinks error. I have checked the voltages at the ps and the main board and while it is cycling the error all voltages are present where they should be so I am assuming the ps is ok. Should I replace the main board or is there a more likely reason for the error code.
Thanks for any help.
 
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