Toshiba Television Repair. Tips and tricks to repair and restore your Toshiba television set...

Toshiba Television Repair

It is important to turn down your contrast to achieve more natural, accurate image and reduce risk of CRT burn- in. However, on Toshibas, picture contrast and brightness settings do not affect the test patterns, including the commonly used service convergence grid.

The overly bright default convergence grid makes it hard to do a really accurate convergence. Also, the bright grid somewhat increases the chance for burn-in, especially if you're in the grid for several hours doing critical adjustments.

Fortunately there is an easy solution for the Toshibas. There are Design Mode (if you can access them with your model) and ADDR Mode parameters that affect test pattern contrast & brightness, independently of the picture. When adjusting these parameters, turn them way down, to closer approximate actual program viewing.

On Toshiba models with access to the Design Mode, you can adjust the following codes:

RGBB (test pattern brightness) (Original Value: 3B) RGBC (test pattern contrast) (Original Value: 64)