The manual for a URC-5650 doesn't list Digistar as a model they have programmed that model remote to work with. But that doesn't mean it won't work. If you go through the Search for Code function (found about halfway down the page in the OneFor All site/page below) one of them may work anyway. The number you have to enter to begin a blind search for a turn off of an operating TV is 991 while you hold other buttons down. Anyhow, there are only about 5 steps to be taken.http://www.oneforall.com/uploads/support/d64b92b9090e8ad745ed648a1c65a1f7.pdf
here's a copy (without the graphics which you should look at) of the steps to try taking (REM: If your remote predates your TV, it may not be covered and you'll need a new remote)(Cinema 5 is the model name as opposed to model number)
SEARCHING FOR YOUR CODE
If your TV, VCR or Cable Converter does not respond to the Cinema 5 after
trying all of the codes listed for your brand, or if your brand is not listed at all, try
searching for your code. For example, after trying all of the codes for your TV,
you still cannot get the Cinema 5 to operate your TV, then:
1. Turn on your TV.
2. Press TV and release. Press and hold SETUP until the
Cinema 5's red light blinks twice, then release SETUP.
3. Press 9 - 9 - 1.
4. Slowly alternate between pressing POWER* and TV until
your TV turns OFF. Make sure that the Cinema 5 is aimed at
your TV during the search. You may have to press this
sequence of buttons (POWER* then TV) up to
100 times to search the entire library of codes.
5. When your TV turns OFF, press and release SETUP to
lock in the code for your TV. Your Cinema 5 is now
programmed to operate your TV.
*Some VCR, LD or DVD player do not have POWER key on the original remote.
If so turn on the VCR/DVD/LD player manually, insert a tape or CD and start
playing. Start the code search process and use STOP key instead of POWER.
When the device responds, press and release the SETUP key to lock in the
code. RED LED will blink twice.
NOTE: To search for the codes of your other components, repeat Steps 1
through 5, only substitute the appropriate device key (VCR, DVD/LD, RCVR or
CBL/SAT) for the component you are searching for.