Re: Samsung SyncMaster 226BW

Looks like the little guy gave up his life for the big ones. Brave cap. I think you are right about the sequence. I was viewing that connector as power in. It is not of course. What makes me suspicious that it is an output is that big AC socket at the other end of the board and all that power supply stuff around it. Duhh. Old brain, getting older.

I replaced all of the electrolytics. I was not going to save a buck and have to do it over again. I even got the big one. That one cost more than all the others together. But I tend to believe...

Re: Samsung SyncMaster 226BW

It fixed the problem. Left C113 empty. I looked at where the caps were electrically first. The 2 that are populated are on the supply after the inductor and C113 was before the inductor. I just left it alone.

After I got it repaired, and my wife assured me I had god like capabilities for fixing it (she is very smart; but a lit major), she told me that there were large square "pixels" on the screen sometimes. This had been going on for a long time. We had a brief discussion around "and why don't you tell me about these things?"....

Re: Samsung SyncMaster 226BW

No I did not. But I see everything now.

C113 goes from +13V before the inductor to gnd. Presumably that is filtering the raw 13V. The other two 820mf go between gnd and the downstream side of the inductor isolating this trace from the input trace that C113 bypasses to gnd. C113 is the only bypass cap in that isolated power input section of the board.

I will go with your recommendations.

Thanks.

Re: Samsung SyncMaster 226BW

It appears that C301 and C302 are simply across the supply voltage to ground. So I am guessing value is not critical. One supply leg does have a resistor between it and the main input power bus.

C113 adds to the input bus filtering.

Re: Samsung SyncMaster 226BW

I did not get a response to my post above so I went ahead and bought caps. But no 680mf. Not intended; just a mistake after dealing with Digikey's system for a while. I have attached an image of the board and the label on the back. I appears I have the earlier version with 680mf caps in C301 and C302.

I also note that there is an empty space labeled C113 aside of C110. Some board versions have another 820mf in C113.

I am not sure about C107. From reading this thread, I assumed there could be three different values in that position....

Re: Samsung SyncMaster 226BW

I have been reading through the thread and have a question. I have (actually my wife has) the target 226BW.

I have seen some references to different versions of the board. I have not seen a way to identify what is in there before hand. I would like to avoid taking the monitor apart, reassembling, ordering, disassembling and reassembling. Amongst other things it increases my chance of breaking something. If I take it apart and wait for parts I will not be fed and will have to live in an external shed. Is there information somewhere that identifies...

Re: New Members - please post your introductions here

Hello everyone. My wife's monitor is failing. For those who are married, you understand the priority of resolving this.

I have spent a couple of weeks and a really intensive last 4 days trying to pick a replacement. My final pick turned out to be non-existant.

Then I did what I should have done and found that the Samsung monitor was another device screwed up by the ever popular crap capacitors.

And here I am. I have determined how to take it apart. Still thinking how I can get the wife out...