I have a Samsung LN46D630MF that powers on but no image. The back lights turn on, and I get audio. I have tried the flashlight trick but don't see any menu.

SOURCE: Vizio 50" P50hdm Audio with No Video

when tv is on horz trans is damge

The Knight

• 76851 Answers
• Posted on Mar 31, 2016

SOURCE: Wondering which pat I should repair; TCON or Main Board

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Marvin

• 85242 Answers
• Posted on Jan 26, 2017

SOURCE: Samsung UN606003FXZA HH01 tv. It has voice but screen is black. When I shine a flashlight on screen I see the program. I have replaced the t-con, main and power board but same result.

The LCD display backlight must be defective.

SOURCE: I'm trouble shooting my Vizio e550i-2b It has power no backlights, image can be seen with a flashlight, I've replaced led driver board and problem persists, do you suggest main board next?

If you can see an image with a flashlight and you can control the tv with the remote then the main board is not the problem. You've replaced the LED driver board, so that leaves the LED strips inside the LCD panel as the likely problem.

SOURCE: LG 47LN5750 No picture

If you have backlights its not going to be the tcon for future reference. you have some shorted or open LEDs in the panel. Check the voltage going to the LED sets, should be 100 plus volts