help.... i have a rca scenium "hd50lpw162" bulb and other stuff gone bad, and no replacement parts to be found so rca is offering me model number "hd50lpw69". i can't find any info on this model at all. they sent me the spec sheet so i know it's a valid model number, but i don't know if it's an older model that i'm gonna have the same problem with. i know most people are gettin the 175 as a replacement, but rca told me that that model is not in stock. anyone got any info on a tv that doesn't seem to exist???