No Picture & No sound. Red LED, Green LED, Red LED.

because you didn't have Picture for this broke led.Please check More details of that on led website. LED COB module Epistar high power integrated LED LED controllers dimmers...

The instructions below are copied from the programming instructions (page 11):

ERASE ALL PROGRAMMING
(The "out of box" factory default will be restored)
1. At the back of the lock, remove the screw at the bottom of
the lock housing and remove the cover.
2. Take out the battery pack and remove battery power by disconnecting
the battery pack.
3. Plug in the (provided) male shunt connector into the yellow
wire female connector.
4. With shunt connector connected, re-connect the battery
pack. The lock will immediately sound 3 short beeps (if
these 3 beeps are not heard, then restart at step 2).
5. The lock will then sound more slow beeps, 1 beep for every
second it takes to clear the memory.
6. After a few more seconds, the LED will slowly alternate between
flashing red and green--disconnect the yellow wire
shunt connector.
7. The LED will continue to slowly flash green and red for 25
seconds. To enroll Function Cards, proceed immediately
as follows:
• With the lock LED slowly alternating between flashing
red and green, present the Function Card #1
to the lock. The lock will sound 5 slow beeps.
• The lock LED will flash green rapidly. The lock is
ready to enroll the Function Cards.
• Re-present Function Card #1 to the lock. The
lock LED will flash green then red, with two beeps
(indicating the card was enrolled successfully).
• Present Function Card #2 to the lock. Again, the
lock LED will flash green then red, with two beeps.
• Continue to present, in order, Function Cards 3-
9. Each time a new Function Card is presented, the
lock LED will flash green then red, with two beeps.
After the 9th Function card is presented, the lock LED will flash
green twice, sound two beeps, and will then remain silent,
ready for use. Note: If the lock continues to beep after presenting
the 9th Function Card, check to verify that the yellow
wire shunt is disconnected.
Note: If you only wish to use the first 3 Function Cards, simply
allow the lock to "time out" after 30 seconds.

Here is the link to the complete instructions, in PDF form. You will need Adobe Acrobat or equivalent to view them:

http://napcosecurity.com/download/PL3000_WI1280A.04_PROG.pdf

Good luck-and please provide feedback if this helps!

not a solution but i have a 50gx30b doing something similar, no picture no sound, 3 green leds are lit up on the main board and then one red led lit up also on main board, front panel red led stays on for about 30 -50 seconds and then it all shuts off, I then have to unplug and replug to get the same results.

Check the Lamp if no picture, audio may be present. Screen is completely dark. Lamp LED flashes 2X every 5 seconds, Power LED flashes GREEN for 140 seconds then flashes RED.
Check the ballast if no picture, audio may be present. Screen is completely dark. Lamp LED flashes 3X every 5 seconds, Power LED flashes GREEN for 140 seconds then flashes RED.

The TV shutdown error code can help you with this problem. If the power led flashes green for 2 Min's then red. The Lamp led should flash red 1-2-3 or 4 time every 5 Min's. These are error codes that may point you in the right direction to you problem.

The power supply (AC adapter) is bad. It has enough power to light the red LED, but not enough to power the TV.http://shop.ebay.com/?_from=R40&_trksid=m38&_nkw=12+volt+5+amp+power+supply&_sacat=See-All-Categories

Thats great, Please rate solution.

Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.