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Maria JimenezAug 18, 2025
How to fix a Sony PFM-42X1 Flat Panel TV when no picture appears on the screen?
- PPatricia RiddleAug 18, 2025
If your Sony Flat Panel TV screen is black, or the power is off, and no picture is displayed, try these steps: Verify the CTRL B/D LEDs (D10, D11, D12, D13, D17) are on. Inspect the power and signal cables of the CTRL B/D. Ensure the X B/D, Y B/D, and Z B/D are securely plugged in and properly connected to the CTRL B/D. Use an oscilloscope (200 MHz or more) to measure the output wave of the X, Y, and Z B/D to identify board issues. Check the SCAN (Y side) IC and the DATA (X side) COF IC. As a last resort, replace the CTRL B/D.