>> I have a JVC rear projection tv that I bought second hand a little over a
>> year ago.  It works fine except for the HDMI input.  When I plug it into my
>> cable box and switch to the digital input, it can't detect anything (and
>> says it's gonna turn off in 9 minutes if nothing is connected before then
>> :)).  However, if I plug in my computer via a dvi/hdmi cable, the tv still
>> doesn't detect a connection, but the computer recognizes the tv for the
>> model number that it is.

> To recognise the TV, the computer only needs to be able to read the
> TV's EDID EEPROM via the DDC pins in the cable (pins 6,7,14,15):

>  http://pinouts.ru/VideoCables/hdmi_dvi_cable_pinout.shtml

> I have managed to read a powered-down monitor's EDID EEPROM using my
> device programmer. I made a VGA DB15-to-DIP8 adapter cable and told
> the programmer that it was connected to an Atmel AT24C21 serial EEPROM
> which has a "DDC1/ DDC2 Interface Compliant for Monitor
> Identification".

> You can find the EDID in the registry at the following key:

>  HKEY_LOCAL_MACHINE\Enum\MONITOR

> If you export that key to a .reg file, you will see the EDID EEPROM
> data. Analysing the EDID will tell you what scan rates the TV
> supports. FWIW, if you post your EDID here, I may be able to analyse
> the data for you.

> BTW, if you want someone to help you, it would help them if you would
> indicate the TV's model number.

> - Franc Zabkar