After off for a while, blue on indicator flashes for 12 times stops then flashes again. TV is Pioneer PDP-5070 Plasma TV.

Ur tv have a dying power supply board,that the board where the power a/c cord plug into.U have all the tools and know basic electronic also can do basic soldering work?Yes,take the tv aparts and check the tv power supply board carefully looking for dying capacitors components parts.These dying many capacitors components parts are alway bulges up or puffing up onto it tops.These capacitors parts are slowing leaking and dying to causes the tv to have a unstable managements of power voltages to tv to powering up the tv,unstable power supply board source that why the tv LED power light indicator are flashing.Replaced all these dying and leakages capacitors components parts are bulging ups or puffing ups onto it tops.Replaced all these dying capacitors parts with the same Micro Fared and but it voltages higer like 5 or 10 voltages higher than the old capacitors parts u are replacing.These higher 5 or 10 voltages on the new capacitors parts will help it to with stand heat better than those old capacitors parts u are replacing.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv power supply board for the replacement.