[kingers]

Re: Bosch Excel 7 1200 spin noise loud then pop

I don’t know what is wrong with it, but try this to drain the water:

Disconnect from the electricity supply and turn off the water supply to the machine.
At the bottom front right there should be a small flap. Open this and there should be a narrow flexi hose with a cap on.
Get something for the water to drain into (there might be quite a bit) and open the cap on the flexi hose. The water should drain out, but might take a while. Have an old towel handy as there are always spills.

As to finding out what has caused it, while it is disconnected from the electricity and water you could take the back or top off and have a look inside. There are various videos on YouTube to show you how to do this.

[kingers]

Re: Drum turns but doesn’t spin

Frustratingly, the replacement control module has made no difference. On a spin cycle the drum turns very briefly once every 30 seconds over a two minute period then, when it should start spinning, everything stops and the time remaining drops to zero.

As with the old control module, one of the components sparks. To the left of the picture below there are 4 x 12v coil components; it is the third that flashes. The spark is internal to the component and, as far as I can tell, it sparks just after the drum starts to turn and is the trigger event for it to stop turning.

It is as if as the drum starts turning, something sends an electrical overload or surge to the 12v coil which then ‘trips’ and stops the drum turning.

I don’t know if the coil would spark during normal use, but it doesn’t seem to be harming it as it keeps going.

I’m not sure what else could be at fault. There doesn’t seem much more to try!

Link to control module picture: http://postimg.org/image/q17logu1f/

[kingers]

Re: Drum turns but doesn’t spin

I removed the top of the machine and looked at the control module while I put it on a spin cycle. Each time the motor turned a greenish-white flash came from one of the control module components.

So, looks like we’ve tracked down the gremlin! New module ordered. Will let you know the outcome once fitted. Thanks for all your help so far.

[kingers]

Re: Drum turns but doesn’t spin

First, may I thank you for such a prompt and well considered reply. Second, I would like to apologise for taking so long to follow up and express my appreciation for your help.

I have replaced the brushes and cleaned the commutator with a commutator stick. The copper segments were worn down by about 1/3 and are now a lovely shiny ‘brand new copper’ colour. They should have quite a bit of life left in them.

Vast amounts of carbon dust fell out and got everywhere :-(. Probably not ‘vast’ amounts but carbon dust is a bit like tomato soup – spill a bit and it seems to get everywhere! Anyway, that’s all cleared out of the motor now.

Unfortunately, having put everything back together the exact same problem persists. The drum will turn a few revolutions during the drain phase of a spin cycle but when it gets to 11 minutes and should start spinning it stops. A rinse cycle is similar though the drum turning is not thorough enough for a proper rinse.

So, I guess I’m looking at replacing the control module. There is one on eBay for my model number going for about £40. The question I have to ask myself is ‘is it worth it?’. I can get a new Beko machine from Currys for £160. I have already spent about £50 (if I include shipping costs) for the brushes and commutator cleaning stick, so is it worth another £40 or should I just dig deeper into my pockets and somehow find the cash for a brand new machine?

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