I've had my own bad experiences as well and, when considering brands for a recent purchase, eliminated them from the mix due to the aforementioned service issue. Buh-bye, Dave's disposable income.
That being said, the blog does have the potential of taking these problems head on. The brand is still strong among consumers, ranked #2 behind Coca-Cola according to a recent Harris Interactive poll, and our own PRWeek/MS&L poll shows they're ranked #2 on the list of companies marketers want to work for. I remember reading a story about the coporate culture at Sony and how a certain maverick was able to break through and achieve success. Witness this passage:
Sony venerates its mavericks, a culture inspired by late co-founder Masaru Ibuka, a puckish inventor who bet the franchise on long shots that turned into hits, such as the transistor radio and the Trinitron television.
Hell, even I wanted to work there.
Their Playstation blog is a hit, but realistically you'd have to screw it up pretty bad for it to not be successful. So far the Electronics blog is getting a good amount of comments (44 and 60 for their first two posts), I will be watching to see if they focus on topics other than corporate culture and products - that's when the real fun with begin.