NES VIDEO BENDING

[alimadhi]

hi
i have NES PAL ver. when i running some games got bending and glitch screen i used Everdrive N8 then i test the game on my famiclone PAL works fine i searched in google about this issue but not understanding what they doing and why this issue just with NES ? 
by the way i test 3 console NES PAL same problem please help me thanks 
Post Merge: January 12, 2014, 11:08:13 am
just want make my NES work like famicom 

[P]

The most common problem with front loading NES is probably the cart connector. So try googling that if you don't have any other leads.