I have Philips CDR785 and it records beautifully on the right discs ;0) however the issue I have is with reading discs from the 3 cd tray, how difficult is it to replace the lens and does it require special equipment?. I get E1001 fault (read disc error) I had this beast appart several times so I do understand how it's put together, I do have an attachment to it and it does sound very good. Any advice would be greatly appreciated, thank you for reading.