I picked one of these up for my Mom today at RS. It was a deal (I thought) at $12.99. WELL, it won't do diddly crap right. I have a Kameleon (on ebay) that works the cable box & TV just fine. I input the SAME CODES in the 15-2103, & it refuses to work the Scientific Atlanta 3100HD cable box, & the enter funcions for the TV Mitsubishi WS-55589 won't work. My Kameleon worked both of her units perfectly. Also, the damn 12-2103 wouldn't learn codes on either OEM remote! Anyone know what gives? I have a HTM MX-500 currently. My Wife wouldn't let me keep the Kameleon for the bedroom, drats.