Power light flashes 3 times then turns off. no picture or sound. model is a d52w19d. i need the parts numbers so i can replace them and fix the problem.

The red light flashing is indicating the error.
depending on the make and model of the TV, the duration of the flash and number of flashes determines the error code.

Sir
please one thing remember that red led blinking indicate specie fault please watch red light count and find the correct fault which is written below
Monitoring Items Number of Flashes of red led Main Power Supply Voltage Error 2
DC_ALERT1 3
DC_ALERT2 4
DC_ALERT3 5
Backlight Error 6
Internal Temperature Error 7
Audio Error 8
Digital FE Error 10
Trident Error 11
Balancer Error 13
T-CON Error 14
thanks

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Check out the flash light test - if you see an image then the issue is with your inverter board that powers the back lighting.

Thats a convergence failure when the led blinks 3 times. Your model uses the PT47WX42 convergence repair kit available from www.tvrepairworld.com the kit contains the parts and the CD with instructions for the repair.

If its model number is KF-50WE610, had you replaced its Lamp recently?
If Lamp is replaced, please check Lamp cover/ door that is not seated properly, make sure its fixed securely.
3 times light flashing shows Lamp cover error.

You need to replace the bulb...very easy. You can do it yourself.

Good Day;
Try resetting the TV by unplugging from the wall A/C outlet for 3 to 5 minutes, plug back in. No fix? Your TV's LAMP needs to be replaced. Part number; UX21516, for Model 55VG825.
Good Luck, big IRISH.

NOT EXPENSIVE POWER SUPPLY PARTS ARE NEEDED TO BE REPLACED . ONLY A TECH WHO , HAS EXPERIENCE ON THIS TV MODEL AND THE KNOWLEDGE ABOUT THIS PROBLEM ,COULD FIX THE TV RIGHT THE FIRST TIME. OTHERWISE REPLACE POWER DEFLECTION BOARD ,PARTS AVAILABLE AT PARTSTORE OR SIMILAR COMPANIES

Sounds as though there is an intermitant, heat-related problem with the HV transformer. You can order this at a tv parts shop or from Sony (probably more expensive) the part number should be on the part or on a schematic. If not, the parts dealer can look it up from the model number.

Good luck! :)