[Torbec1]

[USER=”4209″]electrofix[/USER] Hi Dave the front panel shows the led’s circling along with animated LCD as if powering up, but it just continues – suspected it wasn’t getting comms from the mainboard. Just powered the board up on my bench and the micro has definitely failed. The Triac that switches the wash motor has failed internally, so any isolation has probably broken down and zapped the micro. They could isolate the triac with a component costing pence but choose not to for economy I guess!!!!

I can replace both parts easily as both are available off the shelf from the likes of RS etc… I will just need someone who is able to program the main board with the relevant software! I suspect, that will be the difficult bit though 🙁

[Torbec1]

electrofix wrote:tis an odd one but simple when you know it

Dave

So today the machine decided to die. I am an electronics eng. by trade (admittedly washing machines are not my thing) but I know enough to be able to establish that the micro has died, taken out by the thyristor that drives the seperate wash pump. Why they didn’t bloody isolate the output pin the the triac is beyond me, economics I guess :-/

Anyway I guess this could have been an indicator to the fault above. How removing the element helped I don’t know!

The micro is actually a standard ATMEL processor, so was wondering if I repaired the bits I knew were wrong, is anyone able to reprogram the board? I know it’s a long shot but it’s been a tough few months with only a single wage coming in so could do with saving the money atm!

[Torbec1]

[USER=”4209″]electrofix[/USER] Disconnected has indeed resumed normal operation. Strange as it heats up and seems ok with the insulation test!

[Torbec1]

Thanks Dave, while in there I checked the heater and it showed an insulation resistance of over 10MR.

hmm… I’ll disconnect see what happens!

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