Help! CPS3 Trouble
- This topic has 1 reply, 2 voices, and was last updated May 31, 2023 at 9:26 PM by
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Using the lovegood QSB I took a crack at it and things seemed pretty straightforward. I flashed the CPS3 Firmware and fired up the board and a sigh of relief when the board booted- sweet! I didn’t kill the CPS3 board….
Plugged it into my computer monitor to test the HDMI out and more good news, audio is coming in crispy and I have a picture on the screen. I noticed the colors are a bit off. I go into the test menu and here is what I see:
I wiggle the hdmi board to see if it’s an issue with a connection but nothing changes. I proceed to do the following troubleshooting:
1. Visual inspection, and continuity and short checks.
2. Remove the installation – CPS3 board worked with the mode reversed. – Sigh of relief, the CPS3 board is fine.
3. Re-install the mod.
A. Start by re-soldering the QSB board only. Checked the CPS3 board and colors are still working 100%.
B. Proceed with the rest of the installation. Now the same color problem has returned.
4. Since I’m back at square one but I had eliminated a problem CPS3 board, I remove the little ribbon that connects the lovegood QSB to the CPS2 Digi AV HDMI board. This immediately restores the colors on the CPS3.So this color issue is happening when the QSB is connected to the HDMI board. Plug in ribbon cable, color issue shows up. (As pictured above). Remove ribbon cable, colors are restored.
Any ideas? I would appreciate any help!
It looks like R[3] is shorted to GND. Could you measure its continuity/resistance to GND on the board, see https://github.com/marqs85/cps2_digiav/blob/master/board/cps3/doc/install-6.jpg?
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