1) Firstly unplug the cables and remove the stand using the 3 screws.
2) Put the screen on the desk face down, remove the 3 screws at the bottom of the case.
3) Unclip the rear of the case from the front, remove the rear out of the way – be careful with the clips.
4) Unclip the wires that all go under the metal box in the centre, you’ll have to unclip the shiny metal box on the left.
5) Lift out the whole metal back control box assembly
6) Undo the 3 screws that hold the power adapter board in place and unclip the last wire
7) Go to maplins and buy:-
2 x DT70M (1000uf 25v Radial Electroltic Capacitor) @ 44p each
1 x DT66W (470uf 25v Radial Electrolytic Capacitor) @ 31p each
8 ) Unsolder C113, C112 and C316 from the board, you will notice the tops are bulging as per photo, remembering polarity direction
9) Solder in the 3 new capacitors in their places
10) Put the whole thing beck together making sure all the wires are plugged back in
11) Enjoy your Syncmaster monitor all over again!
Also from reading on other sites, many of the other models of monitor have the same issue and also some of the LCD TV’s. The power board won’t fire up all the internal electronics right if those caps are bad. Mine was also making a high pitched buzzing noise on certain brightness levels which now has gone away with the new caps. I should buy another set in case the other one fails, which I bet it will. I bet those capacitors are cheap to make sure the product doesn’t last too long.