Planar PL1700-BK - backlights go out

[alexanna]

Re: Planar PL1700-BK - backlights go out

I was able to lower the brightness and contrast and was able to get the room where I'm working darker, the backlights do seem to stay longer and they flicker(kinda like a pulse) the whole time until they shut off. they stay on about 2 min. And if I unplug it and let it sit awhile it does the same thing.

I ordered the 10uf caps and am going to replace all the caps.

I haven't seen anyone playing volleyball lately, but some people are still working on their tan.

I do not see where you tried substituted one or two good ccfls to see if the back lights will stay on.
The flickering you mention makes me wonder if a ccfl may be causing your problem.
Al.

[retiredcaps]

Re: Planar PL1700-BK - backlights go out

OK, I replaced all the caps and now the backlights turn off in about 30 seconds.

If you have a fan, trying cooling the power/inverter board and see if it stays on longer.

[De3rcr]

Re: Planar PL1700-BK - backlights go out

OK, I replaced all the caps and now the backlights turn off in about 30 seconds.

I replaced the caps with

470uf 25v nichicon pw
1000uf 10v nichicon he
10uf 16v nichicon pw
10uf 100v panasonic fc

[De3rcr]

Re: Planar PL1700-BK - backlights go out

Quick test. If you lower the brightness and constrast to 20/20 respectively, does the monitor stay on longer?

The reason I ask is that most "2 seconds to black" is 2 seconds or less to black. With yours, I know XP takes at least 1 minute to boot and am curious if lowering the settings help the monitor stay on longer?

Great photos. I'm jealous that I can see grass in the background. Here I just finished shoveling snow and it is piled about 2 feet on one side. Anyone still playing Beach Volleyball on Daytona Beach?

I was able to lower the brightness and contrast and was able to get the room where I'm working darker, the backlights do seem to stay longer and they flicker(kinda like a pulse) the whole time until they shut off. they stay on about 2 min. And if I unplug it and let it sit awhile it does the same thing.

I ordered the 10uf caps and am going to replace all the caps.

I haven't seen anyone playing volleyball lately, but some people are still working on their tan.

[retiredcaps]

Re: Planar PL1700-BK - backlights go out

I have this monitor and when I hooked it up to a pc it was working then after XP loaded the backlight went out I could still see the image with a flashlight.

Quick test. If you lower the brightness and constrast to 20/20 respectively, does the monitor stay on longer?

The reason I ask is that most "2 seconds to black" is 2 seconds or less to black. With yours, I know XP takes at least 1 minute to boot and am curious if lowering the settings help the monitor stay on longer?

Great photos. I'm jealous that I can see grass in the background. Here I just finished shoveling snow and it is piled about 2 feet on one side. Anyone still playing Beach Volleyball on Daytona Beach?

[De3rcr]

Re: Planar PL1700-BK - backlights go out

OK, I'm going to order the 10uf from digikey and post back with what happens.

[PlainBill]

Re: Planar PL1700-BK - backlights go out

I have this monitor and when I hooked it up to a pc it was working then after XP loaded the backlight went out I could still see the image with a flashlight. I'm going to replace the caps first but I have a mixture of different caps.

Here are the caps on the power board now

4 x 470uf 25v lelon rxk
2 x 1000uf 10v elite ej
1 x 10uf 16v elite pf
1 x 10uf 100v elite pf

what I have to replace them are

470uf 25v nichicon pw
1000uf 10v panasonic fm or nichicon he

I have to buy the 10uf ones but digikey has fc's and pw's to replace those. My question is, is it ok to mix all these different caps?

Yes. You notice the manufacturer did that. OK, that's probably going to give you any confidence. But the answer remains the same. In terms of life expectancy there is no difference between Nichicon and Panasonic as long as the caps are good enough for the application.

PlainBill

[De3rcr]

I have this monitor and when I hooked it up to a pc it was working then after XP loaded the backlight went out I could still see the image with a flashlight. I'm going to replace the caps first but I have a mixture of different caps.

Here are the caps on the power board now

4 x 470uf 25v lelon rxk
2 x 1000uf 10v elite ej
1 x 10uf 16v elite pf
1 x 10uf 100v elite pf

what I have to replace them are

470uf 25v nichicon pw
1000uf 10v panasonic fm or nichicon he

I have to buy the 10uf ones but digikey has fc's and pw's to replace those. My question is, is it ok to mix all these different caps?