How to replace knobs on u1661 oven

SOURCE: Change Bulbs in Neff U1661 Oven

You don't need to slide the oven out, just remove the glass covers with a flat bladed screwdriver and then unscrew the old bulbs. Replacement is the opposite.
Bulbs available from Homebase, Wickes, BandQ etc etc.

SOURCE: neff oven door (U1661)

The door is v heavy and the hinges being right at the bottom take a lot of strain, especially when the door is in 'half open' position. Once the springs start to wear the hinges are no longer strong enough to hold the top of the door firmly closed. Our U1661 is 8 years old and we've had the hinges replaced twice under extended warranty. The second time the hinges they supplied don't hold the door in this position and it will just drop straight down if you don't support it while you open it.

SOURCE: neff oven U1661 shows fault code -5-

We have a similar Neff Oven - it is a child proof lock that you have activated. To deactivate - turn the left hand dial that selects the mode of cooking - three times to the left and back (turn it from 12 oclock to 11 oclock and back) in quick succession.

SOURCE: I have changed the element on a neff u1661 main

Is the loose cable on the element , if yes ISOLATE THE APPLIANCE BEFORE REMOVING PANELS
Usually they are spade terminals remove the affending connection, with a pair of pliers carefully press the terminal into itself, not too hard, it will be hard to put back on the element, move the terminal from side to side and ease on with continuous pressure. while you have the back off if you have a multimeter switch the mains back on, use extreme caution select A/C voltage above 250 volts, switch on the oven the fan will start to blow measure across the terminals, if you get a reading of 230 volts A/c the element should start to heat up. If no voltage, send me a reply.
Hope this has been helpful
John