HyperDeck Studio Pro freezes

Hello,
I have HyperDeck Studio Pro, it worked perfectly for more then 4 years but recently started to freez during recording, what may be the problem?

If you did no firmware upgrades there are a few posibilities.
1. Fan is obstructed / non working anymore.. So it will get hot and stop working.
2. Getting hot because of different enviorement / different case you put the recorder in.
3. SSD drive has a bad or corrupt sector which stops the recording due too errors..