Just install a new 42"

A common practice in the TV industry is to include the size in inches in the model number. Often, a model will be made in different sizes, for example, z42pj240 may have a z50pj240 family member. They will use the same main circuit boards and remote controls. Check the list in your universal remote control manual for a variant like that.

Helped over 100,000 people on Fixya and never got paid Fixya are crooks.

Yellow is the video connector.. if you don't have a yellow connection on the TV, try the red, green and blue till you find one that works. You might also need to change the input to get it to work.

video control board remove back panel and look for bad capacitors

Sounds like you need to go into the menu of the cable box & adjust it for 1080 resolution

Press and hold lock button ten seconds

hi the power button might be underneath the tv or a touch screen panel

regards
shaun

you maybe have problem with smd resistors on PSU around 380v capacitor they are ned to re- solder it is on the circiut where is made this voltage -380v in primary

I tried every code suggested for my Viore with Uverse and nothing worked. Finally decided to reset the remote to factory settings using code 900 as described in the instructions from ATT uverse. The remote now works on my Viore tv and all I did was reset the remote to factory settings.

it could be the mainboard is causing the trouble.