Question about Bose Wave Radio
Which model of the Wave radio is this ? If it is using a 9V battery you might want to check the pcb for some discoloration at the Q4 transistor.
If you have a meter available confirm if it is good or bad. Bose has a
problem with this transistor part# 2SC3792 that is undersized for its
purpose. This transistor provides the 5V for the IC and without the 5V
your radio will look as if it is totally dead with no display and you cannot
turn it on. Typically it is only Q4 that is shorted (0-3 ohms) between the outside (emitter and base) pins. Replacing it with the same part will
bring the radio back to life. Bose recommends a beefier part -
2SD438F-MP-E but it is very hard to obtain. I have used a 2SC2655
without any problem and it is much easier to get.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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