Just curious if you found a solution to this issue. I have read that it is a voltage regulator issue and the actual part is in the $15-$20 range. Let me know what you found out if anything. I have the same unit with the same error.

I have a Panasonic SA-HT67. I am getting the same error on my display. When it forst happened I unplugged my system for about a minute then plugged it back in. That seemed to work until today. After trying that method several times I still get the F61 error. The local service center wants to charge $25 to just look because "the error doesn't give you a specific answer as to what is wrong with the system. That is why we have to run a diagnostic..." Drives me nuts. Anything to get you in so they can make a buck. And the manufactures make stuff to not last, so they can make more 2 years down the road. Talk about the fleecing of America. By the way have you noticed that you have to turn the volume up higher now then when you first bought the system? Is your cooling fan working? Because mine has stopped. If you find something please let me know. Thanks