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Old 08-14-2010, 03:03 AM   #1
rudyt
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Adjusting VCOM voltage to fix fading display

The service manuals of both the PRS-300 and PRS-505 state that VCOM voltage needs to be calibrated for each individual display based on the value indicated on the "flexible card wire", and give a detailed procedure on how to do it. The manual also states that VCOM voltage is applied only when drawing the screen

Has anyone with a fading display tried to adjust VCOM to see if things improved?
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Old 08-14-2010, 04:31 PM   #2
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I think I remember reading that you need an oscilloscope to make the adjustment. The average Joe Blow doesn't have one of those in the closet. I just don't read my PRS-300 out in the bright Florida sun and it's fine.
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Old 08-18-2010, 10:45 AM   #3
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Old 08-21-2010, 07:35 AM   #4
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I wonder how it affects ghosting - because it appears that the more contrast You get the more gosting it brings..
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