Beko WKB51031PTM washing machine Padlock light remains on and program will not start

Display board is fine and can select desired wash settings. The padlock light remains on (although door is firmly sealed shut) and no longer goes off (with a click) so program can begin. First few times would eventually begin with a few bangs to door handle area but now does not work.
Paul Caruana

I will try and help with this problem your Beko WKB51031PTM washing machine

This does sound like the door interlock may be faulty, I have included A link to the part below and also a couple of videos about door interlocks to assist you with your repair