55pl9773 i think i could replace lamp driver/balast. what the p/n and how difficult would it be to replace . what it look like on55pl9773

you cant interchange those two ballast. You can get the BP47-00029A ballast at the following link they also assist with installation instructions.
http://www.tvrepairworld.com/samsung__akai_ballast_boards

open up the back of the tv and look to see if any of the capacitors on the power supply or video board are swollen or oozing out stuff....if so replace them and should work

MY philips tv model number 55PL9773/17 WAS TURNING OFF THE SCREEN AND LEAVING THE AUDIO ON FOR ONE MINUTE. THEN THE YELLOW LIGHT STAYED ON. THEN THE LIGHT TURNED OFF. thEN I TURNED ON WITH THE REMOTE AND THE YELLOW LIGHT TURNED ON AND A FEW SECONDS LATER CHANGED TO THE GREEN LIGHT AND THE TV TURNED ON. AFTER A FEW MINUTES, BETWEEN 10 AND 30 IT DID THE SAME THING. NOW IT IS OFF WITH A BLINKING RED LIGHT PERMANENTLY ON. TO TURN IT OFF I HAVE TO UNPLUG IT FROM THE WALL. I REPLACE THE LAMP A FEW WEEKS AGO AND IT IS FINE.

This is because you have a bad lamp balast you need to change the balast as that is proving incorrect current to the lamp due toa faulty sensor on the balast.


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Below 2 images will help you to find ballast board in TV.
Thanks.

theres a snap mounting tab on the bottom edge where it mounts to the light engine.When that breaks off, it won't mount up.

Yes I've had to replaced mine twice. here is the best price I found the second time I ordered it only $99.00.

http://www.intl-lighttech.com/store/item_GTL-OS-69374

Has anyone experianced a problem with sony DLP mod# KDF-E60A2 blowing lamp every 30 days? we replaced balast and lamp, still blows every 30 days or less.

I have this same problem. I replaced the lamp but the problem still exists. I had a repair place come out. They told me it was a bad new lamp. I tried another lamp but had the same problem. Now they told me it is the lamp driver/balast. I am not sure if I will have them repair it for $350+-. When they did the diagnosis, they didn't even bother to turn on the tv.

The balast has a plug going directly to the lamp. There is also a thermal fuse coming off of the balast that lies above the lamp housing. Check for continuity. If open, replace.