Interesting question for the TV techs...

[Mike \(Remove X's to reply\)]

Hi folks... I've been reading your archived posts on a bunch of TV topics.
You guys really know your stuff! I recently acquired an old Sony Vidimagic
CRT projector. This is a single lens CRT projector--basically a TV with a
lens in front of it. They were built in the 80's and were the precursors to
the portable LCD projectors used in the corporate world today. It works
great and I'm really happy with it, but I've been told that the tube is
really "cranked up" to increase brightness, and that I should lower the
brightness during regular viewing to lengthen the life of the tube. Is this
true? Will lowering the brightness via the brightness and contrast controls
have any affect on tube life, or is it just an old wives tale? I can see
this answer going both ways, but I willl leave it to you experts here.

Thanks in advance,

Mike

 

[James Sweet]

Hi folks... I've been reading your archived posts on a bunch of TV topics.
You guys really know your stuff! I recently acquired an old Sony Vidimagic
CRT projector. This is a single lens CRT projector--basically a TV with a
lens in front of it. They were built in the 80's and were the precursors to
the portable LCD projectors used in the corporate world today. It works
great and I'm really happy with it, but I've been told that the tube is
really "cranked up" to increase brightness, and that I should lower the
brightness during regular viewing to lengthen the life of the tube. Is this
true? Will lowering the brightness via the brightness and contrast controls
have any affect on tube life, or is it just an old wives tale? I can see
this answer going both ways, but I willl leave it to you experts here.

Thanks in advance,

Mike

Lowering the brightness and contrast will increase the life of the tube
drastically, though how far you go depends on a lot of things including the
value of the unit and the cost of a replacement tube. If it were me, unless
the projector is a valuable classic, I would adjust it until it looks good
and run it that way until it wears out.

 

[Jerry G.]

It is very true, that the lower the contrast and average brightness, the
longer the tube will last.

Personally, I run my TV sets at the proper brightness, and at a contrast
setting that is acceptable. I like to enjoy my sets, as long as they will
last, then change them when necessary.

--

Jerry G.
==========================


Hi folks... I've been reading your archived posts on a bunch of TV topics.
You guys really know your stuff! I recently acquired an old Sony Vidimagic
CRT projector. This is a single lens CRT projector--basically a TV with a
lens in front of it. They were built in the 80's and were the precursors to
the portable LCD projectors used in the corporate world today. It works
great and I'm really happy with it, but I've been told that the tube is
really "cranked up" to increase brightness, and that I should lower the
brightness during regular viewing to lengthen the life of the tube. Is this
true? Will lowering the brightness via the brightness and contrast controls
have any affect on tube life, or is it just an old wives tale? I can see
this answer going both ways, but I willl leave it to you experts here.

Thanks in advance,

Mike