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Ten year old ISE10 (1606W). Suddenly lost all power, no lights, nothing. I’ve opened it up and there is blackening on the board around a triac and some resisters. I’m assuming this is the issue. I have checked that power is reaching the switch and the switch is functioning.
I’m hoping someone can advise whether it’s worth my while trying to fix or source a new board, or if it’s just likely to happen again so cut my losses and shell out for a new machine.
I tried attaching screenshots but unfortunately it looks like the forum has no remaining storage.to add pics, host on another site like google pics, then post a public link
black dust around high voltage components is common and does not mean thats a problem
Dave
Thank you for the reply and the photo hint. Hopefully these are accessible https://photos.app.goo.gl/Pat3HS8iykoXYUTk7
There is a little melting of solder with possible damage to the circuitry. Is it still worth looking at other causes or is this likely to be the issue?Think I’d be checking TC2 in the first instance. Has one of the tracks from its centre pin been blown as I can’t be 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} from the photo?
Looking closer, yes it appears so – new photos Photo in ISE10 1606W – Google Photos , Photo in ISE10 1606W – Google Photos
Having checked with a multimeter I believe the track from the centre pin of the triac to the variable resistor behind, and from the same VR pin to RD5 (behind RD11) are blown. Not sure my soldering skills are that accurate – is joining those with cable something that could be attempted by someone with suitable skills?
yes thats gone bang
other board will have a dose of copper spray so it may mean they are dead
not sure what that traic feeds, normally i would have said motor but they often fit a heatsink for the motor and the tracks look a bit small. trace connections possibly the door lock
Dave
I see that I can get a new board here for £246 235261 Washing Machine Control Unit (ukwhitegoods.co.uk)
Question now is, if I fit a new board is this likely to be a one off or is there another cause which will just result in it blowing again – from past experience?you need to find out why before you jump in
trace the tracks from the traic and try and find out what it contols, i doubt the board has caused this its just a casualty
Dave
I have a diagram and have photo’d the section of the board front and rear (which I’ve flipped so it corresponds) but I’m struggling to figure it out.
Circuit diagram Photo in ISE10 1606W – Google Photos
Front of board Photo in ISE10 1606W – Google Photos
Rear of board (flipped vertically) Photo in ISE10 1606W – Google Photoslooks like a pump problem as triac feeds out on 3rd term from top
check the pump and its wiring for damage
Dave
Does look like that triac powers the pump. As Dave says, I’d be looking at the pump and it’s wiring now and trying to work out why the circuit has been overloaded enough to blow that track. I’d also take a look at the front PCB to see if there’s any obvious damage from the ‘explosion’ event. If not then it could all be repairable. Certainly worth a go if you feel your skills are up to it.
Difficult to get to the pump and not much to see, but looks fine externally once disconnected
Photo in ISE10 1606W – Google Photos
Photo in ISE10 1606W – Google Photos
Photo in ISE10 1606W – Google Photos
Photo in ISE10 1606W – Google Photos
Front PCB looks blackened but otherwise intact Photo in ISE10 1606W – Google Photos
If I were to try to repair the PCB, what’s the best way – solder a length of wire across the contacts to bridge where the track is blown? Doesn’t seem like there’s anything to lose 🙂You’ll need some insulated wire to fix the tracks. De-solder the component legs and then wrap a stripped end of the wire around each leg to make a wire track before re-soldering. Before that I’d check that the triac isn’t short circuited and also the pump windings (assume the pump does spin and isn’t jammed?). The back of the other board will also need to be cleaned.
It is a concern that the machine is totally dead as this could indicate a fault with the front board, but it’d certainly have a go at fixing it.
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