OK, there are several companies that do the fixed price repair.
For this type of problem this is the best way to get it repaired a it includes the call out, all labour, all parts and the VAT. So if its an expensive part, like the board, you win!
The cheapest quote I can get is £125. Please go here
for the details
If this is built in, and still in good condition, I would suggest its still worth getting it fixed at this age.
To replace a built in appliance is going to cost you considerably more.
If I can help further, please just ask me.
In the meantime,
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