At the very least the ground/earth ( and probably Neutral) potentials were elevated as the earth absorbed the 30-60,000 amps of current nearby. Computer controller boards and their power supplies usually have very limited resistance to an elevated earth voltage. Solid state inverter units are another example. A surge protector on the power input to the device can help. Lots of possibilities with a close strike. If some of the current passed along over the outer surface of the building, then all bets are off , particularly anything on the balcony. And you do get a magnetic field effect from that amount of current nearby. Structural steel can be magnetized by a hit and cause deflection of a compass when held close by. You can get similar effect from an arc welder, or so i am told 😉.
So what did the techs find ?