Picture just disappears...

The screen says there is no signal. The fault should be either with signal cable of the signal device, Just tune in the TV to a local station, If you can see a picture there, there is no fault to the TV, Check the connections.

Is it showing a power standby light? This might be a simple fix like a blown internal power supply fuse.

Defective LED back lights strips, or damaged EEPROM on main board. I will try a main board first, if you do nor have a TV LED strip tester.

T con board issue.

That is a common issue with the last generation of the phillips big screens, the best answer for this is one that i got at a meeting with phillips service several years ago. On philips the tv will not show a picture till the tubes are balanced out, simular to sony, but in a phillips if the white balance is not correct the picture and sound will be muted till all three tubes have warmed up enough to produce a good white balance. As the set ages the tubes become weaker and this procesess takes longer.

there are bad solder connections on the pictury tube drive module. have it fixed at a repair shop.. the tech will be mystified that you know what the problem was..lol..

I would just replace the TV, the parts are not going to be made to repair this. The set is just to old.

Bad chips or faulty soldering....


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted
• No Audio/Video - makes a chirping sound.

Example Photo:

Problem #2 CRT Fluid has clouded over.

Symptoms

• Dull Video, Washed out
• White/Bright looking video
• Halos around objects
• Red/Orange looking

Example Photo:


You can see more examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Your problem is simple. The problem is your pannel. You need a new one. If it is under warranty, have it fixed. If not buy a new tv.

Open up the back of the set but be very carefull. Notice a large black block with a large red wire that runs up to the picture tube. on one side of that large block where the thick red wire is comming out of are two controls, one should be marked focus or F and one should be marked screen or S. With the set operating normally and not touching anything else, slowly turn the control marked screen or S clockwish till the picture gets bright enough. If you go too bright the set will shut down or you see small thin white lines so back down on the control. then touch up the focus and your good to go. good Luck.