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How to enhance video brightness for samsung crt monitor CDP1

 
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PostPosted: Sat Dec 05, 2009 11:51 pm    Post subject: How to enhance video brightness for samsung crt monitor CDP1 Reply with quote

I WANT TO ENHANCE OR ADJUST THE BRIGHTNESS OF MY SAMSUNG CRT MONITOR CDP15B1(G) BUT I CANNOT FIND ANY ADJUSTMENT INSIDE IT HAS ONLY ITS PRESET BRIGHTNESS DJUSTMENT IN THE FRONT PANEL BUT I NEED TO ADJUST MUCH BRIGHTNESS FOR MY PROJECT CAN YOU HELP ME Question
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torbjorn



Joined: 07 Jun 2007
Posts: 370
Location: Sweden

PostPosted: Mon Dec 07, 2009 8:22 am    Post subject: Reply with quote

If the brightness has detoriated over the years due to wear of the CRT, then you can restore somewhat of the lost brightness by increasing the screen grid (G2) voltage of the CRT. Usually, this is done by the lower of the two rotary controls on the flyback transformer (the other one is for focus adjustment).

Set the front panel controls to minimum contrast and brightness and then carefully increase the screen grid voltage until you see a dim raster with retrace lines, then decrease the screen grid voltage until the raster just disappears. This is best done in a dim ambient lighting. Finally, adjust the front panel controls to desired brightness and contrast.
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