Not sure if this is the right place but I certainly will appreciate any input anyone can give me.

I have a Homedics back massager that I purchased at Walmart for $100. I refuse to just throw it away and purchase a new one (as our manufacturers want us to do).

It has, I think, some sort of short or something that's preventing it from working correctly. It only starts sometimes and quickly stops.

I want to fix it myself, if possible.

I think it could use a replacement wire from the transformer to the unit (the OEM wire seems too thin and it may already be damaged inside).

Thing is, the transformer does not have screws to open it and I don't know how to so I can put it back together.

Can anyone answer my questions and, perhaps, guide me along a bit?

(iFixIt.com seems to only focus on computer and phone devices.)

Thank you for reading this.