Upon power up, the prompt says "DHCP LEASE failed" It is a version 5.24. The menu, playback menu, and search menu have all been slightly scrambled. It still plays back older video, but multi screen shots have lines where they should not be. I also have the same model in a 4-channel version with a bad monitor A output. I'm technically inclined. Can I swap parts to make at least one work correctly? If not, where is a trustworthy place to repair these? Please help! Thank you.