How to adjust brightness

If the screen is too dark on the TV or the brightness keeps on continuing to change then the problem here is with the Energy Saving mode settings. By default the TV does set the Energy Saving to Auto, which means that the TV will automatically by it's self does adjust the screen brightness depending on the brightness of light it detects.

If your TV seems to be darker than you think it should be, it is possible that the problem is with the light sensor. The light sensor will automatically adjust the picture brightness based on the ambient light that is in the room, (i.e. if the room is bright the picture will also be bright, if it is dark the picture will also be dark).

To turn this feature off go to Settings > General Setup > Light Sensor.

how about in the menu button you can not get an adjustment in brightness control. if the display in the screen is too dark either in any channel or even watching a movie from an input source like dvd player, then i may say that the picture tube need now replacement.

Please view my Tips & Tricks. I have a tutorial which will help you correct this problem. Your Screen Voltage is too low. You will need to take the back of the TV to fix this. It's not hard, just be careful... the TV must be powered on during the adjustment. I hope this was helpful, best wishes.

Chances are you have a main board issue, you can test the PMW terminal coming into the power board and see if that voltage is dropping off when it gets dim, that is the signal that controls the backlight level...Good luck!

I have the same problem. I was able to temorarily fix the issue by taking the back cover off and blowing all of the dust out. But this only worked for two days. Now the problem is back. Did you fix the issue with your tv? Thanks.

Yes, time to replace the lamp. You can do it yourself.

try adjusting the tint

I have determined that it is my green bulb that is bad, because it also controls a lot of the black/white picures, thus that I believe it is out this is causing the darkness. I went through all of the convergences through set up and altered/adjusted all the options in picture, not much changed other than the brightness of the pictures which at least makes it somewhat watchable. Have called a tech to replace bulb. Will let you know if it is anything else, but I must say for a "girl" I am getting very good at assessing a lot of mechanical issues :)

If this is a CRT-based TV and it's been played most of the time, you may have a bad picture tube, especially if strong red colors bleed to the right. CRT's dim with use, unlike LCD or plasma. But it could also be trouble in the video circuits - none of this falls into the DIY category, unfortunately. High voltage involved, unless you're comfortable around it and want to try turning up the screen controls inside the TV. If you do, let me know - but "no response at all" from the external adjustments points to a more serious problem.