UA48H6300AKXXV -color is so dark - default service menu settings: panel type, tuner, front color

[bindagooner]

Hi everyone,

Few days ago, my TV (SAMSUNG 48-inch LED UA48H6300AKXXV) had an issue (now I know that is because a LED inside was failed), I went into Service menu, did run test something (I followed google suggestion about test screen, pixel, bla bla).
But I had no idea what I changed. Then the color when watching analog channel was terrible - it's so dark, a lot of dark and red. Watching other apps like youtube, or even if DTV channels (HD channels), the color was good as usual. I can not watch HD channels because there is no sound on these ones.

I was trying to change panel type, front color, tuner. because I guessed these things has been changed. But it has not worked.
I am not sure if above things is correct now.

Anyone knows the default of panel type, front color, tuner,... Please help me, share it to me.
Or if you know why and what cause that issue, tell me as well.

Thanks a lot.