Dead LG flatron M1717S monitor

[shamooooot]

Re: Dead LG flatron M1717S monitor

If the J1 is not installed, and the connector to the main board is in place. the monitor should come on without backlights and the Voltages should be steady. The Power light should stay on Blue if the monitor is connected to the running PC, try that.
And then if J1 is in place, and everything are hook back up and you see fluctuating Voltages, it may mean that the Inverter transformer is bad.
The heaviest load is the inverter circuit.

Hey Budm

Sorry for the delay.

You were correct by disconnecting J1 I now got a steady voltage. But the power light is permanently ON, even if I don't connect the monitor to the PC!!!!.

The ON/OFF button is not functioning the power light turns ON when I plug the monitor to the AC power!!.

Nothing appears on the monitor at all (no welcoming screen, and nothing from the PC)!!.

[cmg]

Re: Dead LG flatron M1717S monitor

Isn't that a burn on the adhesive bad under T802? That would indicate it has failed and/or been under heavy load.

There is also a joint which looks open circuit just above the circled area in the photo. I would suggest carefully resoldering that area and removing excess with desolder wick.

[shamooooot]

Re: Dead LG flatron M1717S monitor

Isn't that a burn on the adhesive bad under T802? That would indicate it has failed and/or been under heavy load.

There is also a joint which looks open circuit just above the circled area in the photo. I would suggest carefully resoldering that area and removing excess with desolder wick.

You mean T302, no it is not this is caused by touching it by mistake with the soldering iron.

The opened joint also has no pins to be in it, so it is not a problem.

Thnx for answering..

[Agent24]

Re: Dead LG flatron M1717S monitor

Hey Budm

Sorry for the delay.

You were correct by disconnecting J1 I now got a steady voltage. But the power light is permanently ON, even if I don't connect the monitor to the PC!!!!.

The ON/OFF button is not functioning the power light turns ON when I plug the monitor to the AC power!!.

Nothing appears on the monitor at all (no welcoming screen, and nothing from the PC)!!.

You're not going to see an image because the inverter isn't getting power now, and thus there are no backlights.
Try shining a bright light close on the screen and you may pick up the image (faintly)

[shamooooot]

Re: Dead LG flatron M1717S monitor

You're not going to see an image because the inverter isn't getting power now, and thus there are no backlights.
Try shining a bright light close on the screen and you may pick up the image (faintly)

What about what I mentioned before:

When I plug the monitor to the AC power, without pressing the ON/OFF button. The power light is permanently blue ON. Even without connecting the monitor to the PC!!!!.

The ON/OFF button is not functioning.

Does this mean it is the main board problem now?.

[Agent24]

Re: Dead LG flatron M1717S monitor

What is the 5v rail voltage with J1 disconnected and the mainboard connected?

Can you post a photo of the mainboard too?