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Thank you very much!!! The loose connection was the problem. Unfortunately, now I have another problem. While putting the screen back together I shorted out something in that little rectangular circuit board beneath the bottom of the screen (The one with the thin guage pink and white wires) trying to put the tiny screw back in. It looks like the light on the screen is now blown. Is this repairable or even worth repairing?
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If the LCD screen on your JL Audio JX250/1 amplifier is not lighting up when you turn it on, there may be a few possible causes:
• Faulty power connection: Check that the amplifier is receiving power by verifying that the power light is illuminated. If the power light is not on, there may be a problem with the power connection, fuse or wiring. • Blown backlight: If the power light is on but the LCD screen is not illuminated, the backlight may be blown. In this case, the LCD screen may still display information, but it will not be visible without a backlight. • Faulty LCD screen: If neither the power light nor the LCD screen are illuminated, there may be a problem with the LCD screen itself. This could be due to a faulty display panel, cable or connector.
it just sounds to me that you have a wire harness probably coming off from the display. maybe it looks connected but needs to be reseated. just have a look at all these harnesses. hope this helps. and check the fuses just to make sure you didn't short something out, because if the fuses are blown, then you'll have to find those loose wires before you put back in the fuses.
Unfortunately, (Isay that a lot on this site), your lcd screen is backlit with tiny flourescent lights, sounds like these have been broken not much to do except talk to a local tech and hope that he has an lcd screen to swap or steal parts from.
Sorry my prognosis is not better...
Ed Meyer
Owner
AACS www.alwaysaffordablesolutions.com
Your Vertical Amp is probably Blown (bad) , but before you change that check all capacitors around the vertical amp IC and / or resolder resistors and diodes around vertical amplifier.
And NO it is NOT the Picture Tube
Good Luck
JG
There's a small plunger just beyond the keyboard which switches the screen off when you close the laptop, this could be sticking. Failing that check the screen cables are secure, reseat the screen
Well, you're not going to fix this without opening up the camera.
The LCD screen should have to wires going to it. One is for the light that illuminates the LCD. That one is obviously working. The other is for the LCD itself - it sounds like that isn't. Either the LCD needs replaced, or that cable is loose or damaged. I'd suggest opening up the camera, finding that cable (it will likely be a thinner cable than the other), and checking for loose connections, or an obvious break or sharp bend in the cable.
Unfortunately, even if you find the cable is damaged, I'm not sure you can get it replaced. If you're not confident you can take this apart and put it back together properly, I'd suggest either taking it to a repair shop, or just using it as is. I'd hate to see you damage it further. If you are confident, however, check that cable. If it's good, contact Samsung about a replacement LCD.
The display contains of two main supplies. One is for the data which gets displayed on the screen and the second one is for a thin sheet containing the led's for light. It appears the the data connection has been lost. It can be due to a loose connection for complete malfunction of the screen. If the connection is not loose then the screen needs to be replaced
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