I have this monitor currently and I ordered another one off ebay and I am also in search of another power supply for the one that I purchased. Since I alredy have one I know that the one that works with my current monitor is manufactured by a company in china called Linearty Electronics and this link: http://www.linearity.com.tw/EPmenu_LAD6019.html
is to a spread sheet that list the model that was packaged with the 19" Balance Monitor. (or at least the one that came with my monitor). The model # for the power supply is LAD6019AC3 it's 15v DC 4A. The website gives no information about how to order it via them but they have a contact page that gives a sales email addy as well as hr and gen inquiries. I have sent an email today to see if they can direct me in the right direction to get a power supply for this monitor. Hint: If you got to the site you will have to change the language to english on the main page of the site since this company is a chinese company their site will automaticy come up in chinese except for the word english that the top that will convert the site to english. I will post another response if I hear back. I sent the email just a few minutes ago.