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Collapsing picture into a bright spot on power off.

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12-14-2019, 10:10 PM

DeLorean00 DeLorean00 is offline

VideoKarma Member

Join Date: Aug 2019

Posts: 57

Collapsing picture into a bright spot on power off.

I am working on my 1950 Mercury TV with 16KP4 picture tube. When I turn the TV off the picture collapses into a bright spot. I know other vintage TVs do this and have been told before it is the sign a worn picture tube. My concern is burning a dot into the phosphor. Is there any way to prevent this? Something I should check?

Thanks in advance,
Chris.

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