Hi there, sorry, better forget about that multimeter test. A lot of people fall for this. If you measure the voltage of the unloaded PSU, you will probably find that it delivers 5V as it should. But that does not mean everything is all right. The problem is that a multimeter does not draw any current. To measure it correctly you have to apply an electronic load, and measure the current in that specific situation. A configurable battery tester such as I am demonstrating in my blog (https://joes-tech-blog.blogspot.com/2018/11/logitech-slimdevices-squeezebox-classic.html, approximately in the middle of the page) will create a defined amperage and show you what voltage is delivered under this load. It should not collapse below 4.8V at 2A. This can't be done by hooking up just a multimeter. As these power supplies are dirt cheap nowadays, I would recommend you to just buy a new one. The original PSUs are practically all dead by now after 10-12 years of constant service so this investment is probably not in vain. Be careful about the polarity though, the inside connection is positive and the outside sleeve must be negative. You can choose one for more than 2 Ampères but be sure it's constant 5V DC and no other voltage. The barrel jack is 5.5mm outside and (typically) 2.1mm inside diameter. 2.35mm might also fit, I don't know about the 5.5/2.5mm variant though. You can find tons of more info on this matter in the blog page mentioned above.
Cheers, Joe PN me if your Boom / Classic / Transporter display has issues! Blog: https://www.blogger.com/blogger.g?rinli=1&pli=1&blogID=5053304027701850753#allposts ------------------------------------------------------------------------ JoeMuc2009's Profile: http://forums.slimdevices.com/member.php?userid=23131 View this thread: http://forums.slimdevices.com/showthread.php?t=109775
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