I have broken door latch for Nikon F65

SOURCE: Nikon N65 Film Camera Broken latch

You have to replace the whole door. There is one on eBay, but you won't like the price. Find it here: eBay

SOURCE: the door latch on my nikon n75 film camera is broken.

Parts are scarce unless you get them from a scrap camera. If the broken bit is on the body then it's not worth bothering. If it's on the door then it's fairly easy to swap the door from a donor camera.

But as you can buy an n75/F75 in virtually as new condition for under £50 on auction websites you have to decide whether a repair is cost effective.

SOURCE: Film door on Nikon N70 will not latch!

There is a little spring inside the door latch that moves when you slide cover switch. The spring may be worn out or fallen off. The only way to truely tell is to dismantle the door and switch

Testimonial: "Thanks for the info. Do you have instructions on how to do this?"

SOURCE: Broken latch on film door

Usually on this level Nikon it was a plastic "hook", part of the door moulding, that was retained by the latch mechanism in the body. The broken part may still be in there - if it is trip the latch and recover it with a tiny screwdriver or even a needle. If you can't find a replacement back door you can try welding the hook back in place with a low-temperature soldering iron - with the tip perfectly clean and a very steady hand - as long as the door is thermoplastic and not thermosetting. If that doesn't work bend a paperclip or similar to exactly the right shape with the free ends (roughened) long enough to extend into the plastic of the door by 4-5mm., heat the wire and push slowly into the edge of the door. There are many variations of this technique that I've used, all require extremely careful work! Best tip: spend more time thinking than doing. Good luck.

SOURCE: Display showing "E" and film is not getting forwaded

It sounds like the film transport motor is dead. If so, it needs a trip to repair shop.

be sure batteries are inserted correctly.