Need Help: PSOne LCD Screen

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nobiman
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Need Help: PSOne LCD Screen

Post by nobiman »

Dear all,

Hi, I'm newbie here, need help about PSOne LCD Screen.

When I use my PSOne with official LCD from Sony, everything works fine except half of the top image showing on the bottom of the screen.

I don't know how to adjust this vertical screen position so the image would be normal (centered).

Many thanks before :) sorry for my bad English :oops:
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CRTGAMER
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Re: Need Help: PSOne LCD Screen

Post by CRTGAMER »

That is weird, is the image okay on a normal TV? Maybe the LCD is bad, don't know of any adjustment other then brightness and volume controls. Maybe try cleaning the contacts where the LCD plugs into the PSOne.
Can you post a pic?
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nobiman
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Re: Need Help: PSOne LCD Screen

Post by nobiman »

CRTGAMER wrote:That is weird, is the image okay on a normal TV? Maybe the LCD is bad, don't know of any adjustment other then brightness and volume controls. Maybe try cleaning the contacts where the LCD plugs into the PSOne.
Can you post a pic?
@CRTGamer: Yes, it is okay on a normal TV.

Please see screenshot below:

Image

So, any suggestion? :D
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CRTGAMER
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Re: Need Help: PSOne LCD Screen

Post by CRTGAMER »

The clear screen indicates a good signal. Gotta be an internal adjustment if there is one. Maybe if you are lucky may find some small potentiometers inside. Go slow in taking apart and mark positions before you slightly turn any of the pots. If you want maybe post a pic when you get the inside PCB exposed.
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nobiman
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Re: Need Help: PSOne LCD Screen

Post by nobiman »

CRTGAMER wrote:The clear screen indicates a good signal. Gotta be an internal adjustment if there is one. Maybe if you are lucky may find some small potentiometers inside. Go slow in taking apart and mark positions before you slightly turn any of the pots. If you want maybe post a pic when you get the inside PCB exposed.
Okay, thanks for your suggestion :D

Should take a part the LCD, and try to find pots for screen vertical position.
I hope I don't break it while try to take a part the LCD :lol: :lol:
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Hobie-wan
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Re: Need Help: PSOne LCD Screen

Post by Hobie-wan »

Unfortunately there are no pots on the board, at least not on the one I have. But maybe a surface mount cap or resistor going bad? Could reseat the cable from the board to the screen though.
3GenGames
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Re: Need Help: PSOne LCD Screen

Post by 3GenGames »

If it's always off, maybe it something with the PS's sync signal/clock?
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CRTGAMER
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Re: Need Help: PSOne LCD Screen

Post by CRTGAMER »

3GenGames wrote:If it's always off, maybe it something with the PS's sync signal/clock?
Can't be the PSOne, nobiman states TV looks fine. Come to think of it Hobie is right, LCDs don't do the scan routine of CRTs.
Still, pop that cover off see if that connector is loose and just maybe a pot.
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SnowKitty
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Re: Need Help: PSOne LCD Screen

Post by SnowKitty »

open the LCD up and reseat all the cables inside of it. they tend to get knocked out of place from time to time and cause video problems like messed up color or other stuff like that. unplugging and reconnecting them usually fixes it.
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3GenGames
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Re: Need Help: PSOne LCD Screen

Post by 3GenGames »

CRTGAMER wrote:
3GenGames wrote:If it's always off, maybe it something with the PS's sync signal/clock?
Can't be the PSOne, nobiman states TV looks fine. Come to think of it Hobie is right, LCDs don't do the scan routine of CRTs.
Still, pop that cover off see if that connector is loose and just maybe a pot.

Maybe, but just to point out, LCD's still do a Vsync, and the difference is CRT's scan it one pixel at a time, LCD's just update the pixels and keep them all on. :wink:


Well if re-seating works, that'd be awesome. ^_^
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