Lg 50px4d can anyone tell me the stk number for the zsus in this lcd.

Just replace your tv power board.
LG EAY62171201 EAX63330001 3PAGC10038A-R PSPL-L014A POWER SUPPLY UNIT https://www.abctay.com/lg-eay62171201-eax63330001-3pagc10038ar-pspll014a-power-supply-unit-p-1875.html

POSSIBLE that the main power supply has failed which is the SMPS unit . So please check on the link below and check the power supply unit in the TV.

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies

Hello, In most cases the cause of the error,is the STK that located under the big cooling body. Do you have the technical ability to replace it?

My 50inch plasma LG tv has no picture only sound.

For a 50PXDR-UA (is simular to your TV) the remote part number is 6710V00141T and the retail price is $43.88 from LG.

You can use any 2005 and newer LG remote because the common controls are the same. The newer remotes may have functions your TV does not and that is OK.

Here are two remotes that will work for your TV.
1st link
2nd link
Good Luck. I hope my information has helped you.

Parts for your TV; http://www.shopjimmy.com/catalogsearch/result/?q=LG+50PG20+
Plasma TV does not use CCFL (Cold Cathode Fluorestcent Lamp) like LCD TV. It used Plasma effect to light up the RED/BLUE/GREEN Phosphors.

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums

0206 works for mine (with Sky HD remote).

Ben

Most likely the tv has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If its under warranty, go that route.
If not under warranty and If you have some electronic experience, you can purchase a Service Manual over the internet and diagnose the source of the problem and fix it. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

hi,

have a look at the link below

http://www.smpcshop.com/PLASMA-TV-p-1-c-273.html

This is a very common problem with model. This problem is your Z sus Board. NOT your power supply, or Y sus board. There is a pair of Diode that goes bad. Your only solution is to change your Z sus Board. Part Number 6871QZH036B average cost $237.00

Best regards
Circuitcity