There is a file for a PT-L300U in the files section with a very few commands but it tells me that it uses a variation on the usual Panasonic protocol but with 56 data bits rather than the customary 48 (that Panasonic seems to be using in it's projectors). These commands are generated using the 56-bit protocol and the typical discrete power commands.
Please let me know if these work. If any work I suspect it will be these. Also if you post the Pronto hex for your power toggle command here it will confirm my decoding of the other file.
