I should have been clearer, sorry.
The MicroHD is connected to my A/V receiver which is hooked to my plasma TV. Also connected to the A/V receiver, via hdmi cables, a STB from my TV provider (ExpressVu Bell) and a BluRay player. Those are working A1. I tried to use another Hdmi input on my A/V receiver and no change for the MicroHD: no video and sound. I changed, as I told previously, the Hdmi cable, no success. I then connected directly to a Hdmi input on the plasma TV, again no success. I made a cold restart (disconnect and connect the power cable) to the MicroHD, and it seems to boot ok; first a red led, then a steady green one.
For the last hour or so, I have been trying to find my MicroHD box, to use the small cable (component input) but did not find it ... yet.
That is why I suspect the Hdmi connection on the MicroHD.
Mike