I'm trying to program my GE RM24912 to control a Maganvox DVD recorder MSR90D6 to no avail. The codes listed in the manual don't work. I did a code search on the remote and found some, but they don't control everything, namely the recording function. What could be the problem? What other codes can I use to use the all functions if the Recorder?

you tried these and it failed? with a version 1 GE universal remote?
DVD Recorders, RW, etc..
MAGNAVOX 1409 0979 (A) 0980 (B)


note:
Use codes (A) (B) etc. if you have 2 or
more of the same device.
note:
Combo Devices For Combo Devices, in many cases a single code operates both parts of the device (e.g. the TV and the DVD). In other cases you need
to set up two codes. For example, one for the TV and one for the DVD. Where codes are shown below as [### & ###] the fi rst code operates the fi rst part of
the device’s name, and the second code operates the second part. E.g., for a TV/DVD, the fi rst code operates the TV and the second code operates the DVD.

now if these didn't work you may need a different remote all together...

forgive me if this doesn't help...