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-   -   Little bit of expansion when bright (http://www.videokarma.org/showthread.php?t=254562)

lnx64 06-06-2012 12:11 PM

Little bit of expansion when bright
 
I noticed that my Samsung, expands a little bit when the picture gets brighter. It's not by a lot, but it does it a little.. Is that ok? I noticed my Hitachi doesn't noticeably do it, but a 27" SHARP I have (2000's era), does it too..

I don't remember the old flyback transformer too much, but I don't think it did it, but it might have too.. Been a while since I seen the old transformer.

bob91343 06-06-2012 12:17 PM

When you draw more current (brighter setting) the high voltage droops and the picture gets bigger. It's unavoidable unless you regulate the high voltage.

AiboPet 06-06-2012 12:29 PM

Some of my BIGGER small sets do that (and "bigger" in my collection would be ...ummm...NOT big)

The Quasar "trashpicked" little 9" b/w set does that if I turn the brightness way up. WHOLE screen gets a little bigger (all the way around), and a little softer (H/V).

The Sony 8-301 also does this....and some really wicked scanlines show up. This Sony is already in need of a recap though.....so this is completely excuseable. I'm just happy it even looks okay after being on about 10 minute until I get around to it.


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