
Um yea, unfortunately that's exactly what it sounds like. Sorry to say.
You said that you just got it back from the shop, for the umpteenth time? Is this place reputable? If they are, I would contact the manager, and have them prepared to let you either come in, and immediately have the power cord replaced, or have them replace the entire unit again. You should not have to constantly be taking in a good laptop for broken power adapters, that's ridiculous.
It sounds as if they have at least been trying, hopefully you have not been charged for any of these breakages. A good shop would have tested all of the components they were giving you before letting you walk out the door.
Please let us know what happens, we will be looking forward to your reply,
TTFN
LGW