I am new in Super 8 world. Nizo is my dream brand specially 801 Macro. By the way.. I decided to buy a Nizo 801 macro. The seller is located nearby my city. I have tested some basic functions at the time of purchase. Every function like film drive at all speed,power zoom ,exposure meter .. was fine at the beginning. But at some point, the seller pressed the R button ( located on top of camera ) to check the dissolve function. After that, the film drive motor stopped working( but all other functions like power zoom, exposure etc. works normally) We tried a lot , followed the instruction manual, battery reset etc. but nothing worked. Can anyone please tell me is there any way to fix this problem? Thanks in advance.