u/Exciting_Nerve_9844

i got a Sony Handycam DCR-TRV520 a few weeks ago. Yesterday, i pulled it out to check through and i noticed this issue: when i would move the viewfinder upwards, the inner-view would be completely black until i moved back downwards to a specific position until it will crackle back into properly seeing.

I tried doing some research but i couldn't find any proper information on even what it could be, does anyone here know?