If your QNAP TS-253B NAS is broken, you can still salvage the data from its hard drives. If you want to learn how to do it, check this out; How to Salvage Data from a Broken Hard Drive (Corrupted, crash, won’t boot, etc)
NAS Fried
I recently did the latest firmware update for my QNAP TS-253B NAS. Within 5 minutes of restarting after completion of the update, smoke started billowing out of the back of the NAS. The NAS is now dead in the water. Is it worth paying to get it fixed, as it is out of warranty? Thanks in advance.