Another remote that seems to work with many if not most HDTVs is the General Electric unit sold by Jasco Products (
www.jascoproducts.com). I use one of these remotes with my Insignia flat screen and other devices in my video setup, and it works very well. Doesn't control all functions of the set like zoom, favorite channel list, etc. (I must use the TV's original remote for these), but it does operate all basic functions (volume +/-, channel +/-, mute and, of course, power on/off) and is also usable with up to three other devices, plus a user-programmable "aux" button (I use mine with the TV, my old Panasonic PV-4002 VCR, and my LG Blu-ray player).
I don't know, however, if the Jasco/GE remote would operate as well with your Toshiba TV, but if the set is listed in the remote code table at the back of the instruction book (or on a separate sheet) it should operate at least the basic functions of the TV, as I mentioned. The latest versions of the Jasco/GE remote are said to be "compatible with today's technology", as stated on the packaging, which I think would include all late-model flat screen televisions, DVRs and DVD/Blu-ray players. Note: The "DVR" button on the Jasco/GE remote, while primarily intended for use with a DVR, is also programmable for most late-model VCRs made between roughly 1999 and the end of the standalone VCR era. It will operate most functions of these VCRs and late-model DVD players; however, as with the television, for access to functions of your VCR or DVD which the Jasco/GE remote does not support, the original remote must be used.