Yellow lite flashing. replaced light buld. cleaned vents and fans. now red light on at front panel
Check the ballast board if that's fine check the wiring harness that goes to it I had a very similar problem I had a service teck look at the tv he said a color wheel was the problem 150 bucks for the teck and 55 for the color wheel I didn't call the teck back but in the new wheel same problem I'm pretty handy so I did the work myself I took the harness to the lamp out and checked it pin by pin and one wire was bad fixed it plugged it in works fine but as said previous check the contacts for the lamp too they do get carbon build up on them
I would first suggest checking where lamp plugs into the two pins that the replacement lamp went in correctly----it is not uncommon for it to push the contacts away (not engage correctly) and you will be able to see this with the lamp removed---red should be lamp light failure and most of these have a self check button sequence based on actual model number.
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