Just read this as mine which is also 22 months old has also gone stone dead. Done fuses, taken top off and checked every visible spade connector etc. No life at all from power button. Am going to call in local firm to take a look as 1 year warranty expired and tales on the web of people struggling with Hotpoint reapir number have put me offf. I'll post something on how it gets repaired - I assume you have now fixed yours?
Matt
July 2008