The tv has power but the standy by button is flasshing and we are getting no picture

My first thoughts are to recycle the TV and buy another as this model was plagued with problems. But if you want to fix it you will need some voltage measurements, the 5 volt standy is good since you have standy lamp, the 1st voltage reading would be on the power board connector going to the main board, look for a terminal marked ps-on, pwr, pr, or something that starts with a p, turn the set on at the tv or remote and look for 3 vdc there, if you don't see it replace the main, if you do message me back and I'll get you more info on what to test next but I don't you will find this voltage.

Do you have sound still. Ifvso while the TV is on, shine a torch into the screen .
if you see a picture you possibly have a backlight issue
failing that tcon board but get it tested

If your LCD TV or monitor has stopped working, or is displaying one of the following symptoms, then it's a candidate for some new capacitors
- Flickering screen
- Screen image disappears after several seconds
- Dim screen
- Slow start
- Power LED on, but no picture
- Unusual colors and/or lines
The primary cause of LCD TV and monitor failure is caused by faulty capacitors. You can examine the capacitors in your LCD TV or monitor and actually see if they are bad.
If they appear bulged on top, then they need to be replaced.
New capacitors will solve a host of problems in LCD monitors and TV's and will extend the life of your monitor or TV by several years.
Check the cables, connectors and connections.
Take it to a repair shop.
https://www.youtube.com/watch?v=TR2iWN6b-LY
LCD TV Repair No Power Power Supply Common Symptoms Solutions How to...

Hello
The problem si with some short circuited component/s in its main power supply regulator board. Check the horizontal output transistor on the main board also for short circuted to collector to emitter.

FAULTY POWER SUPPLY REPLACE

AVERAGE REPAIR COST £80 TO £100

Yes,the lamp require changing,life span is over.

I have the same tv and it did the same thing. I replaced my lamp and it corrected the problem.

your picture tube needs to be replaced

i have no idea what the problem is but it has just happend to my plasma!! HELP!

NEED NEW LAMP