Well, I just solve this problem you have to check if the problem comes from the STK470-090 integrated circuit. to do this you have to un plug the audio aplifier card from the rest of the system, if you connect back the system and the error message dissaper the problem is the STK470-090. Hope this help

I have a Panasonic SA-VK700. IT shows in display F61, It doesn?t have problems in your connections. What problem It will have? Thank you for all