Here are some images of the patterns I'm seeing in various modes:
- over-the-air analog channels
- tv-air-analog.jpg (53.56 KiB) Viewed 10442 times
- over-the-air digital channels
- tv-air-dig.jpg (66.56 KiB) Viewed 10442 times
- digital channel with menu
- tv-air-menu.jpg (70.82 KiB) Viewed 10442 times
Note that the menus (as well as PIP) are unaffected by the problem. Also, a pattern similar (but less pronounced) to the one on the OTA digital channels affects the other inputs (HDMI, Component, AV, etc).
I downloaded the service manual and followed the trouble shooting instructions to rule out some of the possible causes. Here's what I found:
1) Accessed the service menu - Mute+1+8+2+Power
2) Ran the DDP1011 Test Patterns - all patterns looked good - manual says this means the DMD is good.
3) Ran the DNIe Test Patterns - all patterns looked good - manual says this means the Digital board is good.
The service manual doesn't present a clear procedure to determine if the Analog board or the cable between the Analog and Digital boards might be bad.
Does anyone have a fairly simple procedure I could follow to determine if the Analog board or the cable is bad? Is there another component that could be at fault and is there a test I can run? I'd rather not order a bunch of parts and do trial and error since this is expensive, may not solve the problem, and if it does, I may not know which change fixed the problem.