Originally Posted by lsfrankel
I'm sorry to report that my TV has cut off again with the blue light flashing 12 times. In addition, my clock was changed to the wrong time and it is now commandeered by the TVGOS. There is no way whatsoever to eliminate the TVGOS as it is embedded into the system. Another brilliant design flaw by our friends at Pioneer.
1. Having been through this myself, I don't think TVGOS is the culprit. I believe you said a tech has replaced a circuit board and you did a firmware upgrade yourself, apparently to no avail? I use a cablecard and TVGOS, and had a tech replace the main board and do two firmware upgrades, one to the digital circuity and one for the analog circuity. It solved my problem for the time being anyway, which has been over three months. Not sure if the right board was replaced in your case, or if the entire firmware upgrade has been done. Both were suggested by a Pioneer tech named Tony who my local Pioneer service tech called for advice.
2. As far as disabling TVGOS, this is what Posting 270 from Kayook said that Pioneer customer service told him to do to disable it: "Press TV Guide, go ahead and enter your own zip code, on the next screen when it asks you if you are connected to cable say no, on the next screen when it asks if you are connected to OTA, say no. That's it. Basically you have to lie to your TV to get the TVGOS functions to quit working."
Try it and see if it disables the TVGOS for you. Even assuming it does, I doubt it will fix your problem which is a bad board probably.