No picture on official PSone screen.

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 11:08 am

'm not sure if this is the right place, so correct me if I am wrong.
I wired up the PSone motherboard to the PSone screen. It worked ok. I turned it off, went to get my psone screen speakers. Plugged the speakers in, turned it on. The music now comes on, but there is no picture. The backlight comes on aswell though. When I move the screen, the picture gets horisontal lines on it, and the backlight sometimes flashes. I put my thumb on it while it was turned on, and the backlight flashed. I think when I put my thumb on it, I shorted it out.

Is that possible? Fixable?

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 11:20 am

Sorry for double post. I looked at it, and it turns out I bypassed the component labed either CI17 or C117. It's right at the topleft next to the plug with OK written on it. I'm not sure what that thing I bypassed is though... Any ideas on how to fix it?

vskid · Post by **vskid** » Wed Jan 24, 2007 11:20 am

Is the LCD panel's ribbon plugged in all the way?

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 11:22 am

I think so. I havn't ever dismantled it, so I see no reason why it shouldn't be.

vskid · Post by **vskid** » Wed Jan 24, 2007 11:25 am

Rellizate wrote:Sorry for double post. I looked at it, and it turns out I bypassed the component labed either CI17 or C117. It's right at the topleft next to the plug with OK written on it. I'm not sure what that thing I bypassed is though... Any ideas on how to fix it?

Un-bypass it? I'll see what it is when I get home (at friggen school).
If you wanted the brightness mod, heres what you bypass.

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 11:26 am

I havn't bypassed that.

vskid · Post by **vskid** » Wed Jan 24, 2007 11:29 am

Rellizate wrote:I havn't bypassed that.

Ok, I'll be home in about 5 hours and I'll see what you bypassed.

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 11:46 am

Oh right, I just worked out what you mean. No I bypassed that thing with my thumb temporerally (sp?).

Here is what I put my thumb over, the arrow at the top:

Kurt_ · Post by **Kurt_** » Wed Jan 24, 2007 12:46 pm

I put my thumb over many components of my screen, but never has it broke.

I got some cool effects though, like only red/green/blue, and wiggly pictures.

You touched the top part? It's possible your CCRT it broken (or whatever it's called. You backlight). You probably woulda felt something though, that things pumps out some juice.

Are you POSITIVE there's no picture? Shine a light behind it (A strong light throught e white plastic will work. If you can see picture on the LCD< it's your backlight. Then you can either LED mod it, or ask around for a free replacement from all those people who LED modded it.

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 12:49 pm

The backlight is on though. When I move the screen around, lines appear and sometimes the backlight goes off.

Kurt_ · Post by **Kurt_** » Wed Jan 24, 2007 12:57 pm

Try plugging the ribbon cable in. It really sounds like it's the problem.

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 12:58 pm

Which ribbon cable? The one from the LCD to the psone PCB? It is in...

Kurt_ · Post by **Kurt_** » Wed Jan 24, 2007 1:53 pm

But is it in ALL THE WAY?

In my experience with this screen, you get odd bars on one side of the screen for 2 reasons:

1) Extra pressure on the LCD messes it up
2) A loose/half-connected ribbon cable

Just try to jam it in a bit more. Try lifting up the little bar and jam it in that way.

Also, is it a PAL or NTSC screen?

Rellizate · Post by **Rellizate** » Wed Jan 24, 2007 2:24 pm

It's PAL. I just tested it. The ribbon cable is in all the way. Now I am certin it is that what I think is either a capacator or a resistor. If it is a resistor I may have fried something used for the screen's video display.

Kurt_ · Post by **Kurt_** » Wed Jan 24, 2007 2:28 pm

If it's PAL have you tried the mod? I know you haven't LED modded it yet, but iut might do something. Hook 5 volts from one of the regulators up to the last pin (pin 12) on the left thingie (the word escapes me right now) at the bottom. It's white, and has 12 pins on it. You'll know the thing.