Hdmi problems after pluggin 2nd device

so I had my WD box and my tv decoder going into my Onkyo amp hdmi inputs… and then the hdmi goes out fro m the amp and into my Pioneer tv… working just fine for a long time, then I connect my laptop thru the last free HDMI input… it works flawlessly but when I try to switch to my WD the screen is black (it gives sort of a small flicker on the screen like its coming on and nothing happens) - still my tv decoder works just fine… I tired to switch around the cables and even tried the WD directly into another tv with a new cable - same result…

if I use composite I see the picture - only HDMI does not work all of the sudden…

anyone have any tips to get it working again ?!?!? or is just my HDMI output fried?

if you tried the different HDMI ports with different cables and only the WDTV isn’t working then I’d consider a replacement if I were you…