Hotpoint WDL754PUK

[mmvanman]

I have been given a washing machine, Hotpoint WDL754PUK, that had a suspect door lock issue. Unfortunately I have no exact detail of the issue symptoms but can confirm the door is locked. When connected up to water and electric the control panel lights up, but nothing else happens. I have carried out a general check on connections, wiring and circuit boards. I have identified a blown transistor on the PCB of the main control module. Is this most likely the root cause or has something else provoked the transistor to blow?

Is it worth replacing the main control module?