Re: Samsung SyncMaster 226BW
Hi
I have a Samsung 226BW whitch had the flickering backlight problem.
After exelent advice from this forum I have now replaced the caps.
1x 47uf 50v
1x 330uf 25v
2x 820uf 25v (My local distributer only hade this cap as a 35v. But it fitts, just)
2x 680 uf 25v
To my delight the screen worked once again.
For a few seconds until i got the computer to send a fully light screen.
If the computer sends a dimed screen signal all works fine. But a fully light screen cases the backlight to go out after a second or two.
I can see the image om the screen if I use a flash light even when thou the backlight is not light.
When the screen receives a full light signal the IP-45130A rev 0.1 board starts to make a high pitch screetching sound. It sounds like the noise comes from the power half of the board. But this is more of a gues then anything else.
The equipment i have to work with is basic. A soldering iron and a multimeter, that can not mesure capasitance.
I have replaced this far:
caps listed above
3A fuse as this was also blown
2x 4511GED ICs
I have been scouering the forum for a simuler problem.
I have been stretching my electronics knolage wafer thin.
And this has now become a misson to get it to work.
So any input or suggestions are greatly apreciated.
Many thanks and happy christmas
Hi
I have a Samsung 226BW whitch had the flickering backlight problem.
After exelent advice from this forum I have now replaced the caps.
1x 47uf 50v
1x 330uf 25v
2x 820uf 25v (My local distributer only hade this cap as a 35v. But it fitts, just)
2x 680 uf 25v
To my delight the screen worked once again.
For a few seconds until i got the computer to send a fully light screen.
If the computer sends a dimed screen signal all works fine. But a fully light screen cases the backlight to go out after a second or two.
I can see the image om the screen if I use a flash light even when thou the backlight is not light.
When the screen receives a full light signal the IP-45130A rev 0.1 board starts to make a high pitch screetching sound. It sounds like the noise comes from the power half of the board. But this is more of a gues then anything else.
The equipment i have to work with is basic. A soldering iron and a multimeter, that can not mesure capasitance.
I have replaced this far:
caps listed above
3A fuse as this was also blown
2x 4511GED ICs
I have been scouering the forum for a simuler problem.
I have been stretching my electronics knolage wafer thin.
And this has now become a misson to get it to work.
So any input or suggestions are greatly apreciated.
Many thanks and happy christmas
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