This B&W A7 was completely dead and this seems to be a common report with these units. There is some adventure in taking it apart but with some gentle persuasion and a hammer we get there and confirm there is a power supply problem. A bit more adventure to get the power supply out and its clear that something has gone drastically wrong. Investigation shows that the power amp supply section has failed. After getting some replacement parts and chasing my tail for a while the unit is re-assembled and is musical once more.
This power supply module and fault seem to be common across a number of B&W units.
Негізгі бет Repair of a Bowers & Wilkins A7 Wireless Speaker
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