How to adjust of brightness and color of my tcl tv L32d10 model.

Hi Norman Malkin, to adjust the brightness of your Samsung TV, you must enter Menu, select Image, display a list where Contrast Brightness Color and other parameters appear, select Brightness and increase or decrease the brightness to your liking, you may need make Color and Contrast adjustments
I hope you can adjust it
Greetings Franco Dosil

Hola Norman Malkin, para ajustar el brillo de tu TV Samsung, debe entrar en Menu, selecciona Imagen, de desplegara un listado donde te aparece Contraste Brillo Color y otros parametros, selecciona Brillo e incremente o disminuye el Brill hasta tu gusto, puede que necesites hacer ajustes de Color y Contraste
Espero lo puedas ajustar
Saludos Franco Dosil

0038,0031,0036. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common set-up codes to check with TVs and other devices are given, in the order of the "device's brand name list" in alphabetical order. Pull up older posts.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/
http://remotesearch.blogspot.com/
http://electrohelponline.blogspot.com/
Search the site by type in the brand name to your device, in the "Search box at the top right of the display window" to see the set-up codes to your device, with different brand remote controls.

need to replace mainboard

Have you try to check the brightness and contrast adjusting?. If yes then the problem still exist my suggestion is to bring it to the repair shop to prevent further damage of your tv. Just a thought thanks.

Since you do not provide the make and model number of the TV so we can look for the user manual for you to read on how to make adjustment to your TV.
You just have to get to the MENU button on the remote for the ON screen setup menu and look for Picture adjustment set up to adjust the Pictures.
It should show Brightness, Contrast, Tint, Color adjustment choices.

You need to post your TV make and Model number on back of TV.

Use the MENU on the front panel display of the
TV

try turning the light sensor off

I will need to know what make and model your tv is.