In case this info is useful to anyone with a Nespresso machine ...
My machine recently stopped working .. behaving like it was blocked: stuttering, turning itself off, dispensing small amounts of coffee - so I called Nespresso's friendly hot-line who told me they could fix it for CHF 160 (I think that's the amount they quoted) which would give me another 6 months guarantee, or (since they thought it probably needed de-scaling/de-calcifying) they would send me a de-calc/de-scaler kit for CHF 10 and if that didnt work, I could buy another machine for CHF 200-350 with another 2yr guarantee. Tough choice (not).
You guessed it, de-scaling the machine didn't work. So I bought another machine. Then my wife asked me what we were going to do with the old one, so I said bin it .. then thought: why not take it apart first.
I found this http://www.glazman.org/weblog/dotcle...s-vs-zithromax
which describes how Daniel Glazman fixed his machine with a syringe .. so I thought why not. He's right about the screws .. a pain to extract with a pair of pliers .. but with patience every one came out. And after some exploration of more (torx) screws inside, and wiggling of bits of plastic, i managed to get the heater out, and using a syringe (from a printer cartridge refill kit), I'm doing the same as him: squirting de-scaling solution straight into the heater.
Regardless of the outcome I can tell you that you MUST descale your nespresso machine regularly (really regularly! - I don't drink much coffee and in the just over 2 yrs I had the machine, I probably did less than 100 cups). After this experience I bought a Brita jug to filter water (just looking at the inside of my kettle shows it cuts scale a huge amount) to keep the new machine from the same fate.
Hope this info is of use to someone out there since there's not a lot of info on what to do with your Nespresso machine that doesn't involve paying Nespresso a lot of money to fix a machine that's just out of warranty!