|
Yes, there can be magnets behind the shield for trimming. The magnets have a larger effect closer to the yoke, but sometimes adding them closer to the mounting ears can improve the purity.
If the shadow mask is warped or broken free as Zeno points out, you can usually *fudge* this, but you will have to do this while the TV is pointing in the same compass direction as where it will be used. If you ever relocate the TV to a different wall, you will have to remove your magnets and reconfigure for the new direction.
Be aware that the trim magnets will also affect the geometry and edge convergence to some degree, so it always comes down to "robbing Peter to pay Paul".
John
|