Needle gets stuck on the brand new 7"

Thanks for the answers. I contacted the seller he promised to send a new one. I tried to different tracking force and anti-skating settings but it did not help. I remember that i got this kind of problem maybe once or twice before with a brand new record.  Maybe it is just a coincidence but it has always been a 7" record. I have never had problem with 12" records. 

Next time it happens, check the rear of your tonearm and see if it's bumping into any obstructions. These could include: Arm lifter mechanism, tonearm wires exiting the back of the tonearm, anti-skate device, etc.
It is possible you got some bad vinyl. Be sure to play new vinyl before the return policy time elapses.

When you said "Somehow needle gets stuck" do you mean needle skip or what? I have thousands of 7'inch records (45rpm), when the needle skips the reduced tracking force will help your cartridge to go through the defective part of the groove (bump, scratch on record surface). 

But in your case it can be exactly what @dweller said, if you have problems only with 7'inch records that visually are clean without any bumps/scratches in the groove. 

It would be nice to play the same records with different cartridge and to check your tonearm settings. or to play the same record on another turntable. 

I meant that needle gets stuck in the same part of the record and plays the same loop again and again.