I have a LVC-9015G, it has the ddw-813s drive in it and has stopped working for most functions. Is a new list available for compatible drives or is this a dead product? I have found several posts about this unit (all old) but cannot find any of the drives available for purchase
Welcome to MyCE!
There is quite a bit of information in the Lite-On DVD Recorder forum, where people often discuss how to replace the drives that are inside of their units. Usually, it takes a bit of trial and error to find a currently produced drive that will work with your specific recorder:
Just go that forum and then use the search function to find info about your model number.
All the info is years old. Are most of these units now disposed of?
Here is someone who recently replaced their drive with a Sony DRU-190A:
The Sony DRU-190A is the same as the Optiarc AD-7190A, which is the same as the Lite-On DH-20A3P. So if you do some searching on eBay for those models, you should be able to find one.
The main problem you will find is that the best replacement recorder drives are older, and most have been discontinued, so you may have to settle for buying a used one on Craigslist or eBay.