KP-51HW40 Sony 51" Fades to blue screen

The service manual on page 8 shows how to adjust the Red/Blue/Green screen voltages. To get to the adjustment board, take the front speaker grill off (two screws at the bottom left and right) and set it aside. No need to disconnect any wires. Then remove the plywood board with 4 screws that exposes the screen/focus adjustments. The top 3 adjustments are for focus, and you need not mess with these. The bottom 3 adjustments are for Red/Blue/Green screen voltage rough adjustments. My screen showed red lines, so I had to turn the bottom right adjustment with a philips head screwdriver just slightly until the red gun retrace lines where no longer visible.

Time to replace the two lamps

Kc8hjc,

Wow man. My Sony KP-51HW40 has been fading to blue after about 1 minute of being turned on, but the picture for about the first 30 seconds was perfect.

I did the adjustments you mentioned and fixed my TV in 2 minutes.

Sony and a couple service places they told me about said I needed to spend between $300-$500 to replace all 3 cans. $900-$1,500 without labor fees. What jerks they are for not telling me about this possible fix.

Thanks again for sharing that process. Hope this helps alot of other people.