Monitor Repair

[berserkfan]

Hello

This is akin to a necrobump, but I actually can't find the thread I wrote a long time ago.

I have an LG 2241T LCD monitor. It works fine for the first half hour or so. Then it starts flashing and I have to turn it off.

In the past I was advised to try checking for blown capacitors. That's the most common issue. Now I have opened the monitor, and to my utter horror, all capacitors are ok. The easy solution is not the correct one! I ran my finger over all of them to make sure they were flat on top.

What else can I do to resolve the issue?

[tp4tissue]

Hello

This is akin to a necrobump, but I actually can't find the thread I wrote a long time ago.

I have an LG 2241T LCD monitor. It works fine for the first half hour or so. Then it starts flashing and I have to turn it off.

In the past I was advised to try checking for blown capacitors. That's the most common issue. Now I have opened the monitor, and to my utter horror, all capacitors are ok. The easy solution is not the correct one! I ran my finger over all of them to make sure they were flat on top.

What else can I do to resolve the issue?

did you check the bottoms?

Is the below board the one you checked?

[berserkfan]

Hello

This is akin to a necrobump, but I actually can't find the thread I wrote a long time ago.

I have an LG 2241T LCD monitor. It works fine for the first half hour or so. Then it starts flashing and I have to turn it off.

In the past I was advised to try checking for blown capacitors. That's the most common issue. Now I have opened the monitor, and to my utter horror, all capacitors are ok. The easy solution is not the correct one! I ran my finger over all of them to make sure they were flat on top.

What else can I do to resolve the issue?

did you check the bottoms?

Is the below board the one you checked?

Show Image

Thanks TP4, yes I checked below and there was a board that looked the same (except mine had 9 capacitators instead of the 8 in the photo). All tops flat and shiny.

Considering how much effort I had to go to in order to remove the monitor backing, I'm really disappointed. Nothing on my board looked out of place (no rust, stains, anything obviously bad.)

[tp4tissue]

Hello

This is akin to a necrobump, but I actually can't find the thread I wrote a long time ago.

I have an LG 2241T LCD monitor. It works fine for the first half hour or so. Then it starts flashing and I have to turn it off.

In the past I was advised to try checking for blown capacitors. That's the most common issue. Now I have opened the monitor, and to my utter horror, all capacitors are ok. The easy solution is not the correct one! I ran my finger over all of them to make sure they were flat on top.

What else can I do to resolve the issue?

did you check the bottoms?

Is the below board the one you checked?

Show Image

Thanks TP4, yes I checked below and there was a board that looked the same (except mine had 9 capacitators instead of the 8 in the photo). All tops flat and shiny.

Considering how much effort I had to go to in order to remove the monitor backing, I'm really disappointed. Nothing on my board looked out of place (no rust, stains, anything obviously bad.)

the only other thing is try buying a replacement power board..

but, obviously you might as well just buy a new monitor.. haha..

[Xenderwind]

If you cant figure out the problem you can try work arounds.  Maybe try lowering brightness or using a different output instead.  I had a monitor that on hdmi would go black fairly often and come back after a couple seconds but worked completely fine on vga.

[tp4tissue]

If you cant figure out the problem you can try work arounds.  Maybe try lowering brightness or using a different output instead.  I had a monitor that on hdmi would go black fairly often and come back after a couple seconds but worked completely fine on vga.

i would've just tossed the monitor.. hahaha.. this is smarter..

[berserkfan]

If you cant figure out the problem you can try work arounds.  Maybe try lowering brightness or using a different output instead.  I had a monitor that on hdmi would go black fairly often and come back after a couple seconds but worked completely fine on vga.

awesome idea; thanks! I haven't tried this before!

[tp4tissue]

If you cant figure out the problem you can try work arounds.  Maybe try lowering brightness or using a different output instead.  I had a monitor that on hdmi would go black fairly often and come back after a couple seconds but worked completely fine on vga.

awesome idea; thanks! I haven't tried this before!

i don't think it's the brightness though, this is an led backlit.. barely uses any power

input is possible

[rowdy]

What about a monitor on DVI that powers on, then displays the "no signal" message and turns itself off, even though the computer is clearly on?

I checked both ends of the DVI cable - no broken or missing pins, and both ends are correctly plugged in.

[tp4tissue]

did you check if it's the computer?

next time this happens, just hit restart on the pc see if it comes back..

[rowdy]

did you check if it's the computer?

next time this happens, just hit restart on the pc see if it comes back..

I have no reason to suspect either.  I powered off the PC, the powered it on again - the monitor did not detect any signal at any time during that process.