Before paying someone to repair the SlingCatchers, I would recommend trying a few things with the SlingCatchers. I would recommend reading the article below that refers to the lights on the front of the SlingCatcher for more understanding of what they mean. One thing I would try to do would be resetting the Slingbox.
This article will list a few other things to try:
If these articles do not helps, I would recommend going to this link for more support options through Sling Media
Sling Media Moderation Team