Motherboard failure - G4 Powerbook

I have a 15" powerbook G4 which I purchased in May 2006, and last week the machine failed to boot. I took it to the local Apple Store and they tell me the motherboard was fritzed and was quoted AUD$1600 to replace it.
Interestingly, a neighbour with the same model machine - just 2 days within warranty - had his machine diagnosed with the same problem at the same Apple Store . They tried to get him to pay for the repair even though he delivered it to them BEFORE the warranty expired - it just took them 3 weeks to get to it!
I would be interested to know if anyone else has experienced a similar problem and if it is unreasonable to expect more than 12 - 18 months operation of this rather vital component.
Thanks in advance..
Tony

I have the very same problem. my powerbook is a little older than 2 years and so far i've been really happy with it. it was a pretty big investment for me and now i can have it fixed for around 1,500 euros. nice.
i'm really not happy about it and to be honest i rather feel let down. i got a powerbook because i love its aesthetic and easy to use qualities and because apple is not so susceptible to viruses and other such stuff. right now though i don't know if i ever wanna spend so much money on an apple product ever again if it's gonna go to bits in no time. my old pc laptop lasted me six years and if it wasn't for the memory and speed and stuff i'd still use it. it's bloody microsoft but at least the motherboard doesn't die overnight. i've searched a few forums and apparently this powerbook malfunction is quite common. how can that be???
i'm currently looking into getting a second-hand motherboard if possible and have it installed by a private person who knows their stuff. doesn't look good though.
good luck to you! i

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