Question Sharp tv burning mode

Nov 4, 2019
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Hello everybody, I have sharp Lc_55cfg6022e it keeps cycling colors blue red green black and white,
This TV has only control stick at the back bottom no more button!
I can reach the menu only if I cast YouTube, YouTube won't work. by accessing menu I can reset TV but the same issue!
I unplugged the power cable, also the same.
Finally I tried to reset it from service menu but once I reach it the TV freezes.
Is there a possibility to reset it?
I can't find any firmware online to download.
netflix works perfect and the only way to view it is to cast it from mobile!
any help is appreciated
 

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