Well, sadly I think the time has come to temporarily discard my beloved TI. I had a power outage this morning for no more than 15 mins, and though I have experienced a similar issue when again I lost power (probably 6 months ago, again only for around 15 mins), my TI has decided it is ignoring me, and is simply not turning on. I have done the 'remove all cables, wait 30 s, press EXIT key' etc, many many times. Doing this worked after the second or third attempt the previous time this happened, but it seems now that my TI has died.
I was only on my TI last night, with everything working perfectly. I have been one of the lucky ones never to have experienced massive issues with clicks or pops, nor sync issues so often reported - mine has worked flawlessly for many years so now seems really disappointing for a high end, expensive synth, to have a power supply issue not allowing the TI to turn on.
Sadly, I simply can't afford to ship this to Access, nor currently can I afford any expensive repairs.
If anyone has experienced similar issues I'd be delighted to hear from you. I'm a very sad chap today.