Samsung UE55H6400 Subtitle Character Problem

First of all thanks for reading this. I have been using serviio about 4 months with my 2012 model samsung tv without any problem. Today I bought a samsung UE55H6400 and I am living problems about subtitle. I am using Turkish subtitles. Nothing is changed about my computer. Everythings is same but now with new TV I have character problem about subtitles. Now I can not see special characters that are special to my languages like " ğ, ı, ş" but before I could.
Please help me about this. Thank you so much by now

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Try to select different character encoding of the subtitles in the TV's DLNA menu