HiCustomer Thank you for asking your question on JustAnswer. The other Experts and I are working on your answer. By the way, it would help us to know:-Could you explain your situation a little more?What model is this?
Does anything light up at all?
Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
There is a fuse inside the unit which you should check first. These are not the easiest units to take a part so go carefully. As I recall there are a couple of screws at the back then one in the CD cover. There are two slots in the side which you have to push in with a flat screw driver. Be careful the lid has a ribbon cable attached.
The fuse is next to where the power cable comes in, MAKE SURE THE UNIT IS UnPLUGGED before dismantling.
If it is not the fuse then it will be the transformer which is a common problem with these. These can only be got from Bose.
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Many thanks for the Accept and also for letting me know about the battery. I wasn't aware that the battery failing would stop the unit powering up! Doesn't make a lot of sense that it would but with Bosch crazy things like that are the norm...