It seems that you are no longer able to connect to your Slingbox SOLO after installing a new power strip.
First, we do not recommend to use any kind of power strips. Instead, we recommend to use a direct connection to the wall power outlet. With this in mind, I recommend you to try to connect the Slingbox directly to your wall power outlet.
Since you are still having issues, I recommend you to reset the Slingbox and run the Setup Assistant for Internet Viewing. The following links will provide you with all the related information: