Screen will not come on

Seems from other posts to be a convergence problem related to STK 392-110 mounted on heatsinks Right corner.
Samir

To reset lamp timer in Panasonic PT-52LCX66..
Press and hold Volume Down button on TV front and press and hold 0 (zero) button on TV remote at same time for 6 seconds, a lamp reset message will appear on TV screen.
Thanks.

check for defective C945 transistors and diode

Sounds like your convergence chips are going. Unless you are real handy with soldering iron I would suggest having a tv repair shop service it(probably cost $200-300). If you are handy then I believe the chips you need are Sanyo STK392-110. There should be 2 of them. be careful if you order them online, there are lots of chinese knock-offs out there.

Your TV most likely has a Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.

The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.