Have just upgraded humax freesat model to humax hdr1100s with humax hd1000 in puc which worked okay at initial set up following the universal remote set up too. Now unable to use b and o remote for anything other than on off and volume. Tv switches off after about 30 seconds. Reset universal remote to normal mode but has no effect. Connections were 1 v-mem+stb now 1 v-mem and pc for stb which is connected via hdmi to dvi with rca red and white for volume. Any ideas please?