There is no picture. When it is turned on the

Take the screen off connect power and watch LEDs if any don't flash its LEDs only needed to change faulty strip if they all flash its probably t con boards.

Hi

Turn off the tv for five minutes and then turn on..

Can u tell me model no and company name so that i can help u clearly

thank you

Try unplugging for 36 hours. I had the same problem but with no sound and picture

My Trinitron Sony Television flashes off and on constantly and has horizontal lines.

Rear projection hdtv, most likely damaged tubes. Don't repair this by your self get a tv repair man to do it before you injure your self.

turn on tv, after a few minutes picture goes black, but still have sound. red light blinks 5 times,turn set off same thing happens when you turn set back on. some times it want do it for 10 min.

All Sony sets will stay blank until the circuit is ready to power the tube. If there is a problem detected inside the set, the tube will remain vlack and the standby light will blink. This blinking will repeat a count as follows: Blink count, pause for a second or two, repeat the blink count, etc. Some Sony sets will play for a while then flash off and on. This is usually an indication that the picture tube is starting to fail. In your case, you should see a blink code. If you can update this with the blink count, I can use that info plus the model number listed above to provide a possible cause and the parts required to repair the set.
Dan

If the screen goes blank, turn off the system. Then, touch the system's power button for more than 5 -10 seconds to turn the system back on. The video output settings will automatically be reset to the standard resolution.

Hello, there can be a contact problem in power supply, deflection or RGB stage. Please ask the tech to repair it for you. Best regards, Arpi

The flash light test only works with lcd monitor as they have back lights. Double check the connections again, also, if you can borrow a monitor try it on your pc, it may be your graphics driver needs to be uninstalled and re-installed, but you will need a monitor to see.