Mmmmm probably a fuse is burned, this is so simple to fix it, take out the screws and then is so simple the fuses are visible, you can get a multitester and check each fuse. radio shack sells multitester for about 10. dollars.
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These radios suffer from several problems. One is the caps need replacement, which causes all kind s of problems, another is the power supply which seems to be easily broken upon voltage spikes. It goes on. Very expensive radio but to many problems. Can be repaired. Let me know if you want to sell it.
From the sounds of it the microprocessor is scrambled, this can be caused by a power surge or thunderstorm, unplug unit, press and hold power button for 60 seconds in an attempt to clear the processor, if this fails this will be a job for a Bose factory trained technician.
The LCD has a dimmer circuit that can be responsible, in some case it is not the dimmer regulation, but the LCD control circuit itself. In that case you have no LCD backlight and the display is almost unreadable. If that is the problem, changing dimmer settings with procedure below will not help.
Most of the time the problem is dimmer regulation.
About dimmer regulation:
Try disconnecting the unit power cord for ten minutes and connect back. Try holding down CD or CLOCK button and pressing at the same time the volume buttons. This procedures regulates Bose dimmers setting in a scale from one to 9. The dimmer has separate settings for medium and low brightness. Set both to 5 if you want to disable dimmer settings.
There's a line fuse inside the radio, mounted on a PC board. CAUTION: disconnect the set from power before opening the case or poking around inside. The fuse could be bad, but these sets are notorious for losing the power transformer. If the fuse is ok then you are looking at a $100 repair fee from Bose. You might want to check out the new HD radios -- better sound, MUCH lower price.
There's a line fuse inside the radio, mounted on a PC board. CAUTION:
disconnect the set from power before opening the case or poking around
inside. The fuse could be bad, but these sets are notorious for losing
the power transformer. If the fuse is ok then you are looking at a
$100 repair fee from Bose. You might want to check out the new HD radios -- better sound, MUCH lower price.
Unfortunately, Bose will not release their schematics of parts lists, effectively giving them a monopoly on repair of these sets. On their web
site, www.bose.com, they offer to repair most Wave sets for $100 or
give $200 credit towards the purchase of a new Wave. Before you spend
the big bucks though, you might want to check out the new HD radios.
Better sound and MUCH lower prices than the Bose.