Quote:
Originally Posted by Voxophone
Argus25 - I'm fairly sure the compression of the raster is due to my camera.
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That sounds good, sometimes camera shots will give a false impression of the raster or TV image with a grey or dark wide band as part of the raster gets under exposed.
All the light you see from the phosphor comes from the scanning electron beam which gets its energy from the EHT supply. The fact the raster is good in width also indicates the line output stage is fine and normal height means the vertical output is fine and the HT must be good too. So seeing a good raster checks multiple parts of the TV's system (except the radio frequency stages and sync separators).