I've owned the 250 for 8 months. About 8 weeks ago all digital inputs failed and I had a diode replaced under warranty. Took a fortnight. The other day the unit would not accept any instruction from either the remote or the function buttons on the front panel. It had to be turned off and when back on behaved itself.It's happened 2 times since. I'm concerned there's another problem on the way. The unit is VERY expensive in Australia and I'm surprised at the trouble I'm having.There is a 2 year warranty but that's not the issue. Anyone else have or heard of similar issues?