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In case anyone else has the same problem, getting a new power module did sort the problem out and it doesn’t look like anything else was damaged when the board went pop.
With the aid of the new board I did fix the old board eventually – at least 2 large capaictors, and a transistor had blown. I also replaced an IC in the main damaged area. However the main problem is a melted track under one of the capacitors which from the track size looks like it was designed to act as a fuse.
The board works again with the track bridged with thin wire, but I suspect it would not be safe to use since it will not longer be acting as a fuse of the right value. I’ll put the old board away in the loft just in case the machine fails again it could come in handy for fault finding.
Barry
Well, I got the machine out and had a look around. No water in the base, but I did notice some charring on the power module case.
I got that out eventually and found the the PCB has an area with a burnt look about it and smoke damage on some components. So it’s a pretty good bet that has to be fixed as the first thing, and then hope that that fault hasn’t damaged anything else.
Barry
Yes it looks like it has a display to the left of the water LED with 3 digits labelled h:mm, and another 2 digits to the right of the water LED. I guess the errors would appear in the left display. Neither of these ever shows any number or code. I would have expected these to all illminate during startup as part of its self test.
It also looks like the various buttons all have an associated LED – again they never illuminate.
In order to get any further I need to pull the unit out – it turns out this is not easy as the kickboard fits very snugly all round, and one end can’t come out because of the skirting board fitted after the kitchen units, while the other end can’t come out as another section of kick board at right angles would have to come out first.
I’m going to get hold of a glass suction lifter to see if I can pull the 2nd section off without damaging anything which would then give access to the section I need to remove under the dishwasher.
I will reply again in a few days if all goes well.
Thanks for your help so far,
Barry
Hello Dave,
I should have been a bit more explicit – the symptoms seemed to be exactly the same as posted by ‘had a-neff now’ before he started changing things.
However I can’t remember for certain if the all the LED’s behaviour have always been identical but the situation now is:
Pressing power on button: After 5 seconds the water and rinse aid LED’s both start flashing constantly at about 2 flashes per second. The middle LED stays off.
I seem to remember when it was working it goes clonk a few seconds after powering on, like a solenoid activating. It doesn’t do that now.
Pressing the power on button again turns all LED’s off.
All other buttons seem to have no effect. I have tried short presses, long presses, very long presses, double presses and some combinations of button presses too – Nothing changes unless one of the buttons pressed is the power on button.
Filling the rinse aid had no effect on the rinse aid LED as would happen normally.
I have also tried unplugging for 5 minutes and try again but this also had no effect.
Barry
