HDMI port issues
I am trying to set up a 5030ub for my neighbor, and neither of the HDMI ports are working. The component cables work just fine, and the temp and lamp lights have never indicated a problem. When I change the source to either of the HDMI inputs, the projector becomes unresponsive for about 1 minute 30 seconds and then says there is no signal. I have tried multiple short HDMI cables (< 5ft) and devices (Blu-Ray, Xbox 360, and Chromecast). I imagine firmware has nothing to due with the problem, but it was old. I updated to v111 just to rule it out. Also, the projector emits alternating tones intermittently that I read is most likely due to an aftermarket bulb so probably unrelated as well.
Is there anything else I can try, or is this definitely a hardware issue? If it is a hardware issue, does anyone have an information on parts or repair? Information on repair seems to be pretty sparse online.
Thanks for any help anyone can give me!