Those SMD caps in there are real time bombs and after 20/25 years easily the cause of extensive and nasty damage when dilly-dallying
As for my unit, the power supply worked unloaded. II's all back together provisionally. Easy coseverythingl wired via connectors. Plugged in power and... lights up... but doesn't load greeting screen... Some error message instead. Hoped it was just a brain fart, so tried 'reinitialize' software per front buttons. Didn't work. Then tried reinitialize per power button as described in service manual. Nothing. Still have to try hard reinitialize. According to manual, that error message could mean anything really -- including that there's still something wrong on the boards, which is very likely.
Anyway, the regulators on the audio board are running quite hot. Two of them too hot to touch for long actually . but I guess that's what they generally do -- maybe not. Well, quick test showed that voltages on IC pins are fine, but there's 15V on pin 1 of one of the dual op amps in the input section. So obviously something wrong there : input protection diode or IC itself, or something down the line.
But all good, cos now the work can start ; )