The best part of the 10NES design, as a consumer, was that it was fail-safe, rather than fail-secure. The console defaulted to booting. So, if your NES started having the infamous boot-reset flashing light, all you had to do was unscrew the NES enclosure and clip the power pin on the 10NES chip. And these were huge pins, it didn't require any subtlety. You could do it with a nail clipper.