Do you have a radio with an AM tuner and suitable antenna, even built-in?
Cheap clock radios and portable devices are fine, but even HiFi tuners normally come with loop or ferrite AM antennas.
Try as mentioned above, eventually compare with any other remote handset you have.
Normally, the handset IR emitter diode produces a pulsed magnetic field, caused by the pulse current it draws, on any key pressed, that would cause a typical sound in the whole lower AM range (between stations). Go very close to the AM antenna.
If not giving any result, but another handset would, the IR emitter is not working, for what reason ever. Bad batteries or something broken inside, like some bad soldering. A pin of the X-tal or IR diode come of.
Then get a pre-programmed universal handset, try the existing Philips TV codes. Around five of maybe eight possible codes should work, some way. Then teach all still failing (TV) keys into ProgDVB controls. VCR controls never work this way.
Controls must be unique.
This is the best advice I can give as an experienced TV mechanic...
BTW, licking on electrical contacts will cause fast corrosion, due to acid and salts in the saliva.
Clean that thing fast, then apply a tiny amount of pure Vaseline.
The receiver unit does not have any energy source inside, so your tongue will only have sensed the chemical process of starting corrosion.
Don't ever do this again
