Does the Z80 have a self-healing system?

Hello everyone! In continuation of yesterday's topic about the dead Z80. Having found out yesterday that half of AON died, I loudly promised him that in the morning I would go buy a new AOH. Yeah, shazzz! Nothing changed overnight, I checked it specifically yesterday - turned on for the last time: half the bus given y process constantly in the log. "0". I turned it on in the morning - everything works! So I’m thinking: maybe a subject? Alexand