YouTube video to repair screen rot

[dwight elvey]

> From: eric940 at gmail.com
>> This may be rhetorical, but why did they use that PVA material in the
> first place, given that the solution provided in the video just places
> the lens over the CRT glass with nothing but air in between?


Hi

 It may have been to keep the loss of light to a minimum.

The index of refraction of the PVA may be close to that

of the glass used. This would reduce the number of effective

air glass interfaces. This also improves contrast as there are

less surfaces the reflex room lights.

Dwight

 

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