If you have a problem with the Hdmi connector, and the lucky that it is not caused by the Cpu, Than this information may be useful. Check the 5v, whether it is present. Check the Ohm values (of course without the psu connected). Renew the diodes when in doubt. If this all does not help, then it may be a CPU problem. Good luck.. And here's the HDMI diodes vdc measurements with two situations. But be careful with measurements on the diode, do not short-circuit between the pins. Use a needle on your probe. Good luck.