Just over a year ago I upgraded to a Sky Plus HD box. It worked fine for about nine months, but now it's developed a really frustrating intermittent fault.
The TV picture will be showing normally, then suddenly it will flicker and go blank - either a blue or a black screen. Sometimes it will recover almost immediately, but a few seconds later will go again. Eventually, the screen just stays blank.
I've tried various fixes from the Internet - switching off at the mains to reset the system, etc - but they only work temporarily, sometimes for a few weeks. I've been on to Sky, whose 'solution' was to do a software update. I've done this twice, but the problem returned.
If anyone can help with any suggestions, I'd appreciate it. Or do I need a new box?