Hi, I'm trying to diagnose whether I have a motherboard problem with my Tivo. My Bolt is about 6 years old and was working fine until about 12 months ago when it started randomly freezing and rebooting. I decided to replace the HDD with a verified Toshiba CMR drive. I also replaced the power supply. That was about 9 months ago. I continued to have random problems until I decided to remove the cover of the Bolt thinking it was overheating. Well, to my delight, the Bolt worked flawlessly for at least 6 months straight. Now, in the past few weeks, the same problem has returned; random freezing and rebooting. I have tried basically everything I can think of including removing cable card, swapping power supplies (I have 2), plugging in direct to the outlet not surge protector, and using a different HDMI cable. Now the bolt seems to be stuck in a loop displaying the "Tivo" start screen before rebooting. It's not possible to get to the flashing lights step to even do any diagnostics.

I did notice that while watching TV before my last failure, I saw a lot of random streaky rainbow colored lines appear on the screen before it rebooted.

At this point, seeing how the HDD is only 9 months old and I can't help but conclude that there's something wrong with the motherboard. Since WK cannot fix a mb issue, I wanted to see if there are any tips here before I decide to move on from this Bolt.