I recently had to redo a logo that was done awhile back for a construction company.
The task was pretty simple. Make their old logo new with a tech look and feel to it.
The first thing I did was to put their logo on a black background and simplify the color scheme. I kept their original shape, but changed their font. Tech fonts are sans-serif usually and made with clean lines. They use basic lines and are not hand written. They kind of mimic the wires on your electronic devices.
Here is the old logo:
And here is the newer version I just made: