Let me document an issue and resolution for the forum:
I recently had an issue with my KDS-60a3000 where upon power-up, the green power light would flash 11 times, then a quick red flash, a few clicks from the tuner and the bulb would briefly come on, and then this whole crazy sequence would start again. The set would not initialize.
I read several different forums and downloaded the service manual. I took the set apart, and cleaned everything and reassembled and it worked for a little while and it happened again.
Ultimately what I found was this: about a year ago, we got rid of satellite and installed an OTA antenna to get local channels (which look very nice btw). Well, it had been a year since we had scanned for channels, and apparently, one of the higher end stations here near Dallas (channel 33.x??) had moved to a different frequency. Well, my kids apparently were flipping channels, and the TV would hang on this particular channel (which it was programmed to believe existed, but had in fact been moved to another frequency and another channel number). My kids had powered off the tv thinking that they would try again later (they are young). But, when the TV is powered back on, it would not initialize and would repeat the above behavior. I realized after much troubleshooting that if I remove the antenna/coax cable, it would power up fine (on that same Channel). Ultimately, the fix was to have the TV rescan all of the antenna channels (which it then removed the 'missing' channel from the lineup). After that, all was good.
Moral of the story: if you get initialization problem where it does not appear to flash a documented error code (such as you get 11 green flashes followed by one quick red flash), disconnect the coax, change to another channel, and then have the set rescan all of the channels.
I was getting ready to replace the tuner board, and I even had a local repair shop tell me it was my bulb.
Hope that helps someone,