Facing TV Problems? Ask a TV Technician.
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Generally a blinking yellow status led means the tv thinks the lamp door is not put on the tv. There is a small switch that the door makes contact with and the tv won't turn on unless that door is secure. Check that, and check the actual wiring that goes to that switch.
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Same thing yellow = orange.
Check the wiring going to that switch. Check the tab on the door that it is surely making actual contact with the switch LEVER inside the tv. Manually push the lever and hold it while you plug in/power up the tv.