Help! My MPU-6050 don't work again!

Hello, I have a problem that MPU-6050 doesn't work.
Yesterday, I could see that MPU-6050 worked well clearly.
But today, I can't see that MPU-6050 works well.
When I look Serial monitor, Serial monitor doesn't show me value: it shows me only white screen.
Other MPU-6050 does work well in same coding and program.
MPU-6050 having problem lights up well.
Also I use UNO, which doesn't lights up in TX.
I really want to solve this problem! Please help me!
Have a nice day!

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