Quote:
Originally Posted by Jeffhs
I just saw this post and am glad you are getting that 1953 Hoffman TV working. The only thing I would be concerned about is the fact that the picture does not fill the screen, due to the difference in aspect ratio. On a modern, flat screen TV this wouldn't be a problem, but with a TV which was made long before HDTV, any image having a 16:9 aspect ratio will produce a picture similar to a 4:3 TV with insufficient vertical sweep. This could and likely will cause screen burns at the top and bottom of the screen; of course, these screen burns will damage the tube in a short period of time. I would be very careful about this, as I don't know if replacements for the CRTs in either TV (or any CRT TV, for that matter) are even available any longer.
I don't know where you are getting the images you are displaying on your Hoffman combo and the other TV shown in your post but I would suggest, if you are using a DVD player, setting the device to "zoom" so the image will in fact fill the screen. This will prevent screen burns and, again, certain damage to a CRT which may or may not be available any longer, as I mentioned above.
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that is an automatic "feature" of the cable box that is being used to feed all the TVs i have, when it goes from a HDTV source, it does an automatic letterbox mode if the source was NOT hd, then it would fill the screen, the risk of any kind of burn in is very very small, as the full screen is still being scanned, and would have to be run in letterbox mode for many hours to have any bad effect.