Repairing the Samsung Syncmaster 710T
We have had several of these Samsung Syncmaster 710T units in our shop recently for repairs. This model uses the BN44-00113A power supply board. This power supply board is also used in the Samsung Syncmaster 711N, 911N, 920N, 930B and 720N models. The one we will be repairing here takes a long time to show a picture, but this power supply issue can also cause no power at all or just a blinking power light and no display. If your monitor has any of these symptoms then this article should get you going again. As always if you have any questions just use our forums so that your questions can also help others too. To complete the repair you will need the following tools: Philips screwdriver, small flat blade screwdriver, soldering iron, desolder wick and solder. You will also need the following parts:
Qty. 1 470uf 25v capacitor
Qty. 2 1000uf 16v capacitor
Qty. 2 1000uf 25v capacitor
Qty. 1 47uf 25v capacitor
The first thing to do is remove the cables and the monitor stand. Here is the the back of the unit with the 4 stand screws circled.
With the stand and cables removed you can lay the unit face down and remove the screws holding the case together as seen here.
Now you will need to separate the front and back halves of the case. On most units you can just pull the front bezel up and give it a slight swist and the latches will open. If your unit is tight you may need to insert the small flat blade screwdriver between the front and back to pop open the latches.
There is one screw that holds the back plastic case on that will need to be removed, this screw is located at the center front of the unit. With the plastics removed from the electronics you will now need to remove the metal shielding to get to the boards. There is one screw that holds the back metal shield on the case on that will need to be removed.
You will also need to remove the 2 screws located on each end of the screen as seen here. Remove the shield and set it to the side.
Now you can see the boards we will be working with. The board on the left is the power supply board and the one on the right is the display controller board. To remove the power supply board you will need to remove the screws circled in yellow and unplug the backlights and power cables circled in red.
Here is the BN44-00113A power board after it has been removed from the monitor. The capacitors we will be changing are circled in yellow. You may notice some slight bulging or doming of the parts in your monitor, That is what is causing the problems. Even if they are not all bulging now you still will need to replace them all because the others will soon fail and you don’t want to keep opening the unit for repairs. Be sure to use the proper rated parts on the repair or you will have a failure again that could cause additional damage to the monitor. Here is a page that describes what capacitors are and which ones to get for the repair, Capacitor page.
The values of capacitors and the locations are as follows:
C617 470uf 25v
C615, C614 1000uf 16v
C612, C611 1000uf 25v
C607 47uf 25v
When installing the new capacitors be sure to check the polarity. The capacitors will have a stripe on one side, that is the negative terminal. The board will have the holes marked for positive and negative. The best thing to do is as you remove the old part, insert the new replacement and then move to the next location.
This is not guaranteed to solve all problems but in most cases this is the issue with this model.
Once the parts are replaced you can just reassemble the monitor and you should be back running again.
If you don’t want to do the repair yourself, use the service request link above. Most monitor repairs for this model run $35 parts and labor plus return shipping.
If you have any questions about repairing this model please use our forum section here.