I paid far too much for a faulty TV, but I really, really wanted my Kuro. This TV will intermittently power on, when it fails to power on it will flash the blue power light 8 times. When it powers on it works perfectly.
The fix is to replace a 1.8V regulator on the SCART A/V board, or to replace the entire A/V board assembly. Testing the regulator, when faulty, it outputs 0.01V, when working 1.79V (it's a 1.8V regulator). In the faulty state, a small amount of freeze spray will bring it back to life.
The regulator is hard to source in the UK, but it appears BA18BC0WFP will fit fine as a substitute part (the original is NJM2846.) The part does require moderate soldering skills (and of course a soldering iron) to replace.
Cost of the part is approx £1.50
Hope this helps someone else.