hello I am also having problems with my 109u remote and also with the RM-102s remote for my HDR 1000s the boxes are not very old but I am uncertain as to when they were bought? I have been having problems from soon after purchase. the STB or PVR button(depending which remote)lights up when various buttons work and don’t otherwise, sometimes these buttons work, and sometimes not. very unpredictable. I have been falling back on the RM-F01 which is a much older remote but has never stopped working perfectly, with some success. I do not use rechargeable batteries. Am I very unlucky or is this a common problem? I will be grateful for any help! thank you