Having problems with your LG Flatron L1715S 17" LCD Monitor ?

LG 1715S faulty

\015 I have an LG 1715S, just out of warranty. Suddenly a few days ago the screen went blank, and now if I turn it on and off again the picture flashes up for less than a second, then goes again. I've noticed that the screen is in fact still on, just very very dark.It's the same problem, after switching on the screen shows a picture for about 1 second and then turns black, woth power indicator still on green. This repeats everytime I switch off and on.\015\012The given fix (replace C202, 680uf 25V) seems me to be not valid for my Flatron L1715S with serial-number 401WAAW25488; Productcode: L1715SL-ALEUR; Model L17LA-5. Manufactured January 2004.\015\012In this model C202 is a very small (about 2 mm) part mounted on the small card (80 mm * 73 mm) with the blue connector to the PC video-cable. Repearing this card seems me to be impossible (Card LG Model: L-Chassis-ANAL06; Date: 2003.03.11; PA: 6670T628A62.\015\012The Card with the power Supply (where the faulty capacitor should be) does not contain a C202. THis card is about 178 mm * 110 mm; P/N: 6871TPT241E; barcode: PI3N13FPT241E.\015\012Please Help me: Ad Koper - the Netherlands. [email protected]\015

Answers :

I just wanted to add that this may be a back light issue. Check the screen with a flash light if there is a faint image it's the back light. I also wanted to let you know that staples is currently having a sale I was just able to get a 19 inch acer flat screen for $89
The dust can cause shorts and overheating and it is common cause for fault.


When the monitor is on fault state (protection) there is never an universal remedy that can fix all problem, you always need to test component and do troubleshooting.

In your case , more than a faulty power supply you have a bad AC to backlight lamp circuit.

The circuit is integrated on LIMP (power supply) board , and supplies power to the backlight lamp.

Testing this circuit (that replaces inverter) in full may be difficult, as you need to use an oscilloscope to read ~AC out. Reading voltages on inverter is not difficult, but remember that there is high voltage in there.

Downlolad service manual here.

Follow instructions at page 12 using block diagrams , exploded views and schematics to test LIMP and main board that can both cause the problem.


Don't forget to leave feedback.

Thanks.

Repair Help & Product Troubleshooting for LG Flatron L1715S 17" LCD Monitor

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LG 1715S faulty


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