The latest lock you need could be a gr8,it’s usually a 22 or 20 backset, and you can change them,yes they can be awkward as sometimes you have to take the glass out and drill the lock out,but sometimes it could be just the handle spindle that could be broke either way you do not need a new window,, £80-£85 max to replace

Whilst it is nice to save a few ££ by doing things yourself, it’s always best to have work done by professional people in the relevant trade, find a tradesmen you trust and let them replace the locking mechanism it’s a straight forward task for someone in the trade

橱窗磨损或钳工伴侣

你好，yes the window can be repairable and is absolutely an easy fix.I will suggest you to take the sash out of the frame but take the glass out of it before taking it out as if you’re not on the Trade it will be hard for you to handle the sash as is heavy

当然，您沿着正确的线路，由于高度，更容易删除开口。如果从内部安装玻璃，则可以将其删除以使其更轻松，更易于处理。卸下铰链螺钉并抬起内部的开口，然后可以更换锁，如果找不到锁定的确切匹配，则大多数标准的ESPAG机制都是合适的，您始终可以相应地移动窗口以确保其正确锁定。

你好呀。简单修复。只需卸下窗扇并更换变速箱ECT即可。
非常感谢