Hi component peoples, I'm in need of some assistance fixing a Samsung Syncmaster 223BW. I've done the basic diagnostics and here's what we're dealing with;
The power button works, but pressing it gets no results... no blue leds, no output to screen. The power board is outputting 14.5V (close to the specified 13.5V).
The IP board (Model: Mendel_VE, Code: BN41-00885B) has handy contacts on the reverse for you test the voltages and I'm getting the 1.8V and 3.3V outputs but nothing on the 5V circuit.
I've identified a cap with high ESR and very low resistance in the 5V circuit. A different cap (position C725) with the same markings gets very similar values to the other caps on the IP board.. This is where I get stuck. I've googled the markings on the bad cap "24347 100 16J" (position C435, top middle of pic, right of the ribbon connector) and can find nothing useful on the net.
When I checked the forum for other posts on the same monitor, user Scenic has the same IP board as mine and although there's a link to the schematics in this thread, the schematics are incomplete, the image of the IP board in the PDF is not the same as mine and the components have different location identifiers. I can't read what's printed on Scenics caps either thanks to the low res images (front & back). I've looked hard for a full schematic diagram of the same revision of my IP board but no success..
Does anyone know what rating "24347 100 16J" is? I'm used to being able to read off the old capacitor so I know what to use as a replacement.. I don't often have to replace SMT caps. How can I find out what cap I need to replace C435 with? Thanks!
The power button works, but pressing it gets no results... no blue leds, no output to screen. The power board is outputting 14.5V (close to the specified 13.5V).
The IP board (Model: Mendel_VE, Code: BN41-00885B) has handy contacts on the reverse for you test the voltages and I'm getting the 1.8V and 3.3V outputs but nothing on the 5V circuit.
I've identified a cap with high ESR and very low resistance in the 5V circuit. A different cap (position C725) with the same markings gets very similar values to the other caps on the IP board.. This is where I get stuck. I've googled the markings on the bad cap "24347 100 16J" (position C435, top middle of pic, right of the ribbon connector) and can find nothing useful on the net.
When I checked the forum for other posts on the same monitor, user Scenic has the same IP board as mine and although there's a link to the schematics in this thread, the schematics are incomplete, the image of the IP board in the PDF is not the same as mine and the components have different location identifiers. I can't read what's printed on Scenics caps either thanks to the low res images (front & back). I've looked hard for a full schematic diagram of the same revision of my IP board but no success..
Does anyone know what rating "24347 100 16J" is? I'm used to being able to read off the old capacitor so I know what to use as a replacement.. I don't often have to replace SMT caps. How can I find out what cap I need to replace C435 with? Thanks!
Attached Files
I will double check to make sure when I have another pair of hands to assist me.. I have also tested for voltages with a VGA cable connected to a running computer & am only showing the same 5.21v and 4.74v. 
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