I have recently bought the Monoprice 4x2 True Matrix HDMI switch. I was having some problems with my previous Monoprice HDMI switch that I wanted to try to fix with the new device. I have a projector and a TV set so the 4 inputs and 2 outputs of the matrix switch is ideal.
I currently most often use a directv HR20 and a PS3. These are the sources that I typically switch back and forth from. I have a Samsung TV and a Mitsubishi Projector as the two different displays. I have a separate Yamaha amplifier and Logitech Harmony remote that I tie everything together with.
The problem I was having was that when I would switch from the HR20 to the PS3 it would hang up in the transition and then it would flash between a black screen to white noise with a loud audio as if tuning a channel on an older tv set that was not occupied. Between the flashes there was a greenish flash. The only way to get this to stop was to power off the matrix switch and turn it back on. This would happen maybe 1 out of 3 switch transitions so it became annoying. I thought it was my cheaper 50ft HDMI cable run to my projector initially. I then bought the amazing silver plated thick HDMI cable from Monoprice again and still had the problem.
this hoping for an improvement. II connected the device to the sources and displays and had no initial problems. Now a couple of weeks have passed and my wife calls me to tell me that the PS3 is not working. The symptoms were a black screen that would appear on the projector or TV set. Nothing I could do would fix this. After a couple of days it randomly worked again. One day the switch stops working with the PS3 completely and that is the state I am in now. I will update this with my current status as I fix this problem.