Initially I applied the standard logic to technical complaints from Talent, i.e. they were making it up to cover the fact that they were doing something stupid
Nice studios - ours didn't have any outside windows at all and could be very gloomy as a result.
All I had to deal with was "talent" desperately hiding what they had just done, the classic being one who had pre-recorded his very last show for the station, but on his last live show decided (against all the rules) to take a bottle of cider - kindly sent in by a fan - into the studio. The studio with our almost brand-new, custom-built desk. As is probably obvious, the best part of a pint of cider ended up in the desk. Or in one half of it, anyway (the controls were split with a script space in the middle), putting two of the three microphones (including the main presenter mic) and two of the three CD players out of action (from memory - it was about 20 years ago). The playout system was fine, but it had little music on it and was mainly used for adverts, jingles etc.
Said talent didn't call the pager at 8pm, when the accident happened, but struggled through the rest of his show. At 10pm the next bloke did call the pager and steadfastly refused to swap to the "spare" studio - being one of only two people in the building at that point, it would have meant a bit of running between the two studios (a distance of all of 5m, but two airlocks with very heavy doors) to "offer" and "accept" on the switcher.
Fortunately, my boss was practical about these things. In specifying the desk, not only had he gone for one with a separate electronics pod, safely out of the way in a nearby rack, but the channels had been stripped right down to gain, pre-fade, fader and a start switch (where appropriate). All the switches were fully sealed, the gains and faders controlled VCAs and although the Penny & Giles conductive plastic fader itself wasn't sealed, it's a brilliantly easy design to dismantle and run under the tap. I replaced a couple of wipers, that's all, but had to work around the 10pm bloke who still refused to swap, despite me being there to push one of the buttons, because it would have meant packing up his box of bits and carrying it next-door.
Oh, and the desk structure included "vent" holes, so the cider had dropped straight out of the bottom of the thing onto the perp's trousers :-)