Do you train to troubleshoot your TIC? The fire ground presents challenges that don't occur in the ideal conditions of training. You should be training with your TIC in zero visibility conditions, preferably in a live burn. If you only train with normal ambient temperatures then you may not see the thermal contrast you will see in a real fire. We also need to be able to deal with issues that may arise. One of the most common problems with TIC's is white out. There are two common causes, fogging and focal point issues.
When dealing with fogging make sure you wipe three locations. First, wipe the tic lens/eye, then the TIC screen, then your SCBA face piece (make sure it is moisture on your mask and not it reacting to high heat conditions before you wipe your mask!). This should remedy any fogging issues.
The second cause is related to focal point. The focal point for most TIC's is 3 feet. Anything viewed before 3 feet can be blurry, limit details, or just white out the camera. An out stretched arm is about 3 feet. So if you have the TIC pressed up against your mask in zero vis conditions, then anything you look at should be at least an arms length away. If there are objects in the way that are closer, this may cause blurriness or white out! Know the limitations of your tools and learn to remedy issues that arise! Stay smart, competent, and aggressive!