One-For-All remotes- some have reassignment values for the different
device keys. And, for instance, the TV subset will not accept codes or
generate codes outside the TV code database. Check and reassign the
device keys for the proper device. Usually by:
device key
set
enter reassignment code (992)
target device key

JR


On Tue, 28 Feb 2012 09:59:46 -0000, "N_Cook"
wrote:

Video projector without an IR R/C , originals or substitute not available
and cannot access the presets.
Setting a One-for-all so-called universal, URC 3445 in search mode ellicited
nothing in TV/VCR/Sat/DVD sub sets, as usual. What is not specifically
stated in the URC manual is after setting in search mode , why you press
power button, and then + to advance through the presets in the firmware, to
send power on/off codes.
I forgot to press Power in the DVD subset sequence and instead of
transmitting variously coded Power codes it must have sent various + codes.
Anyway on DVD code 1928 the "Keystone +" box popped up on screen. The "-" ,
Power , or no other button worked in this DVD subset mode. I intend getting
into the URC, remove ceramic resonator, and putting about 2V rms of sig gen
around the resonant frequency (done this before on a different URC) and see
if that opens up more buttons , set on 1928.
Failing anything more useful from that, monitor that "+" sequence on digital
storage scope should give the "50 KHz" pulse rate , coding clock rate and
combined model+code sequence for "+".
Then something like this circuitry of settable clock + CMOS switch settable
PISO shift register for model code (HCT165 ?) / settable delay SR (4557?) /
another settable PISO for buton code / gating a settable "50 KHz "
oscillator / IR diode / ( learnable remote for regular use ).
Changing switch settings for the button PISO from the known working "+" code
to the missing ones particularly for MENU and ENTER functions in particular
. Any flaws in this potential hack, as only thought experiment at the
moment?

ps , for the UK anyone know what is the cheapest souce of very basic
learnable remote controls?