Archive for October 10, 2015

How to stop your Dell mms-5650 from humming.

If you have a noisy transformer in your Dell MMS-5650 speaker unit it can be quite annoying.

IMG_20151010_124010These units internally run on 19 Volts – the same as most laptops.

You can remove the rear screws and pop off the front panel to free up enough wire to access the power connector, then solder a spare Laptop power supply onto the relevant rails.

Ideally you’d use a 90 Watt PSU if you really want it loud, although a 65 Watt one will suit.