20 Most Recent Philips 42PFL3603D 42 in. LCD TV Questions & Answers

The standby/on circuit should be troubleshooted. Contact any service technician. If you wish to get some details, check the site linked here. Electro help . Pull up older posts. Check the site in 'Mosaic' view. It will make search easy.

There are two reasons for this. Back light problem, and T'Con board problem. It will be best to contact any service technician. Gopakumar Gopalan Google

Try these, Contrast: 53 Brightness: 56 Color: 45 Tint: 2 Sharpness: 2 
Color temperature: Off
Dynamic contrast: Off
Digital Natural Motion: Off
DNR: Off
Color enhancement: Off
Active control: Off

your set goes on protection , problem in main board .

The TV processor is locked up, unplug from wall for 40Min, and it will reset back to normal.

a professional. -These electronics go threw a self diagnostic when they start up, normally they turn off when they find a problem.

If the remote works for the set, both it and the buttons on the set go to the same place in these sets.The Keyboard with the manual buttons may have a lockout feature--it can be locked to prevent children etc from tampering with the controls.If no function from remote, that could be same issue or another==key board has priority over the remote control.if all else fails carefully read the owner manual.

SHORT CAPACITOR ON IR BOARD NEAR CONECTOR FROM KEY BOARD ITS THE PROBLEM FOR REMOTE COMANDER NOT WORKING .

This problems are alway the causes by the T-CON decoders board that sit at the bottom wright in middle of the LCD screen panel.Tries websites like Shopjimmy.com,Ebay.com to a refurbish T-CON decorders board for the replacement.

It is totally internal problem. May be chip set issue..i suggest you to go call service technician.Don't take a risk, just give it in safe hands for repairing.