Intermittent problem on Whirlpool AWZ 541

Hi,
Can you help identify an intermittent problem on my Whirlpool AWZ 541 condenser drier, please?
-It stops mid-cycle.
-Doesn’t restart after powering off and back on. Both the ‘On’ and ‘Water -Container’ lights on the panel are lit. With the door open the ‘Water Container’ light is off. If the start button is held in with the door open, the ‘Water Container’ light looks half lit. But the Water Container is emptied after every use – I suspect this is a symptom but not the cause.
-After several futile attempts, the drier eventually restarts normally – and then stops mid-cycle a time or two later.

Other background:
-I’ve replaced the element and thermostats several times over the years; we are now very careful to keep the lint filter and ductwork clean, and don’t open the door mid-cycle.
-When running, the drum has a few brief ‘false’ starts before rotating normally.
-The ticking sound (from the programmer, I think) is heard when the drum is not turning.

To help decide whether to replace the drier (it’s given 10 year’s good service) I’d like to know if an expensive component is likely to be causing the problem, or if it’s something that I can easily fix (like a poor cable connection?)

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