Actually, your TV probably killed their box and your other equipment.
(My background - 35 years in TV repair)
Point 1: Storm damage tends to hit one leg of your AC line but not the other (half the outlets in your house).
Point 2: The newer the set, the more easily damaged. (switching power supplies).
Point 3: Damage occurs in a flow pattern. (in one place out another)
Point 4: The TV is the only hgh current device in the damage path. Low current devices tend to receive damage, not inflict damage.
Point 5: A TV has a two wire plug and uses the tuner shield connector in place of a ground wire. (the RCA jacks are also connected to the coax shield) Most new TVs even have a spark gap on the AC input with a wire that connects to the tuner case. A short in/through the TV outputs through the antenna/cable/RCA connectors, unlike your PJ that probably has a three wire plug.
Lightning or a power surge probably hit one device and the flow pattern passed back through the other devices, damaging them in the process. Due to their design, TVs are the most easily damaged devices that you probably own. Due to their lack of a three wire grounded cord (to minimize ground loop interference) a single TV set failing can damage every device connected to the entire A/V system
. The three wire plug on the PJ provides another ground return path for your equipment.
Examining the specific damage to each device would give clues as to the source but it was probably the TV first. The damage then sought a ground return through the Boxes and PrePro to cable coax ground and PJ power line ground. Time to contact your insurance agent and check deductables.
For example, I am currently working on a 7.1 amp. The ground trace burned from the audio input jacks, indicates that the device connected to the input failed, passed to the A/V switch IC, shorting it, passing through to the 7 volt reg ICs, shorting them. Here the damage indicates that the TV shorted and took out the Amp. In your case, all damaged devices would need to be examined to determine the source, but historically the TV is responsible 90+% of the time.