John,

The last Samsung LCD we did fit the pattern you mentioned. In a TSU-6000, the NEC2 codes would not work at all. Not even a blinking light response from the set. Those same codes being sent from an AMX system worked just fine. The NECx2 codes would work from both the pronto and the AMX system. It is my opinion that the latest LCDs use the NECx2 code set and are getting more picky about the timing. The AMX was run through an emitter, so it may have tweaked the NEC2 timing just enough to make them work.