Backlights are showing through, and flashlight test I didn't see anything on screen. Any suggestions on what to replace?
Do a little research to find out if it has a T-Con board. If not, it's most likely the main board. Find either board on ebay and search for a video on you tube to see how to replace it.
SOURCE: my ws-55311 shows blue screen on all inputs except the DTV input
This set has 3 hidden menus accessed with a different 4 digit number code----You need the Mitsubishi remote to enter.
One of them is the Option menu which will allow a hard reset of the TV back to factory original---98% of the time it will restore all inputs--cures all sorts of odd problems.
If you have that remote and want to try it let me know for sure the model number and I will give you a link to the instructions for doing it.
SOURCE: How can I get my backlights to work on Samsung LCD tv
If your not a TV Engineer , get one to look at it , as you may keep changing the incorrect part.
have a look round this site.very good guides.hope it helps...
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.
I would count your losses and replace the TV.
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