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Re: Samsung syncmaster 215tw monitor flickering
Well you can use the parts from Radio Shack but they are not rated correctly for this use and will fail quickly and could damage the power supply when they do. You need to use low ESR, High temp and high ripple current capacitors in switched mode power supplies. Here is a link to a repair guide that shows what to look for and replace on the power supply board and it has a link to the proper parts. I hope this helps, if so please rate my solution.
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Check for a failure of the capacitors on the power supply board. This is a common problem with these units and its a very easy repair. Here is a link to a repair guide for the SyncMaster 214T which uses the ame power supply board so the repair information would be the same for the 2 units. http://www.ccl-la.com/blog/index.php/samsung-214t-repair/
Flickering or wavy picture is a very common symptom of failing capacitors in the power supply board. This is a very easy repair, it just requires replacing the 6 capacitors on the power supply board. Here is a link to a repair guide for the SyncMaster 214T which uses the same NP-20 power supply board so the repair information will be the same.
Flashing or flickering is a common indication of failing capacitors in the power supply board. The fix is very simple and just requires replacing 5 capacitors on the board. They will need to be soldered. Here is a link to a repair guide for the Samsung 214T units. http://www.ccl-la.com/blog/index.php/samsung-214t-repair/
I hope this helps, if so please rate our solution.
You could be dealing with two different problems, bad monitor, or a bad videocard/pc.
I'd swap the monitor out to verify that the computer is working as it should first. Once you determine that the PC is in fact fine, my suggestion would be to change the resolution on the PC to a lower setting then normal. Once that is done Plug the Samsung SyncMaster 215tw back into the pc and see if it powers on.
If it does not, i'd check the cables and swap them with something else to make sure thats not the problem. If you have another PC available, i'd test the monitor on that PC to make sure that it is not the issue.
After all that you'll come to the determination on what the problem is. Sadly, if the LCD is bad you'll have to replace it as they are extremely expensive to repair and generally not worth it.
However, i'd verify if it is under warranty or not, you never know! you might be able to get it fixed for free :D
This is a typical symptom of a failure of the capacitors on the power supply board. When the filter capacitors go bad the power supply can not start up correctly so you get flickering or even no display. You can repair this unit by replacing the bad capacitors and a fuse on the power supply. This is an easy repair, it just requires a little soldering. Here is a lin to additional information on which capacitors need to be replace and also here is a picture of the power supply board with the capacitors and fuse circled. http://www.ccl-la.com/catalog/product_info.php?products_id=229
The 920nw did have a 3 year warranty on the unit but they will be out of warranty now. The flickering power light is an indication of a failure in the power supply board. When the board fails it can't start up correctly and the power shuts down over and over so you get the blinking light and no display. This is a very common failure point on all LCD monitors after a few years of use. There are parts called capacitors on the power supply board and they filter the output power. When they fail the power is not properly regulated and the power supply shuts down and tried to restart so you get the flashing. Here is a link to a repair guide that will show you how to dis-assemble the unit and then what to look for and replace to get it back up and running again.