Printed circuit board with mounted electronic components
Generic photo: gunthercox · CC0

T-con (timing control) board: board or panel?

The T-con converts video from the main board into the signals that drive the panel rows and columns. Loose ribbons, a blown T-con fuse or a failed T-con cause image faults; lines that stay fixed in the same place usually mean the panel itself.

Cross-checked ~45 min advancedBrands: All

Before you start

  • Unplug before touching boards
  • Ribbon (FFC) cables and their latches are fragile
  • Do not flex or press the panel edge where the column drivers are bonded

Diagnostic steps

Unlock all 5 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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T-con (timing control) board: board or panel? · OnCall Tech