Question about Philips Televison & Video
If this is a standard CRT, there is at least one internal adjustment that can be made and the typical one (located on the flyback transformer) has a tendency to drift with age and reduce the accelerating voltage. In addition, it is possible that the phosphor is aging too so some compensation can be made with the adjustment mentioned. Some sets may also have separate adjustments (usually for two of the three colors) that can be tweaked to compensate for age.
The flyback is the high voltage transformer that produces the horizontal sweep and high voltage for the CRT and often has two adjustments; one for the high voltage (misset this can wash out the screen) and another for focus which can change when the HV is adjusted.
In any set of this type, there are dangerous voltages exposed inside and a well-insulated tool should be used for the adjustment which can accept either a flat blade or Phillips type.
Posted on Sep 05, 2009
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Posted on Jan 02, 2017
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