Video Problems: Obscure Convergence Problems

All Barco projectors consist of the convergence driver section and the convergence output section. The driver stage is controlled by the keypad and convergence parameter settings, and the convergence output section really is just a booster amplifier for the driver board. The output amplifier runs hotter than the driver board, but failures can occur in both areas. (The Barco 800 and 801 sets have the driver and output sections on one large board).

If you ramp a convergence parameter from 0 to 100 but nothing happens, chances are there’s a problem in the output section, or one of the other signals required for convergence to work is missing.

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