Had this washer/dryer for a number of years now and it’s been nothing but trouble.
I could probably strip it down and put it back together blindfolded I’ve done it that many times.
If the washer is dead and the electrical filter is ok then it’ll probably be the main pcb as already mentioned, if you can’t afford to replace and you’re handy with a soldering iron then I can pretty much guarantee it’s the component labelled HS3 on the board, it’s a ‘off line switcher’ that looks like a regulator, part number TOP246YN which can be bought for a couple of quid from most electronic component shops.
It’s a bugger to get to though as you have to cut a hole in the back of the enclosure where the component sits to desolder it as well as removing the silicon type resin that covers it top and bottom.