Hello Everyone... I've spent the last couple of days absorbing the wealth of knowledge on this board -- THANKS!
I have a Samsung SyncMaster 920 19" widescreen LCD monitor that has recently started having troubles starting. When I apply power (with a VGA cable attached to the PC), the blue light comes on, I hear something in the power supply making a bit of noise, then it turns off. It seems to be about a 2 second cycle. I've been able to get it to start a handful of times, and it works fine once it is started.
Note: If I remove the LCD ribbon, I can get the monitor to power on each time, and respond properly (obviously with an all-white screen).
So I started digging around and I found that there is a swollen Samxon GK 1000uF 10v cap on the board. I would like to recap the PSU and the control board, but I'm having a bit of trouble matching up the proper replacement parts (ESR/ripple/etc). I was hoping someone could point me in the right direction on which series replacements I should use. My electronics knowledge is a little rusty, but from what I've been reading, ripple current needs to be equal or higher. Its mostly ESR I'm having trouble comparing. Do I just compare the impedance, or is there more to it?
Here are the caps I'd like to replace (information was collected from the various data sheets):
Thanks in advance!
I have a Samsung SyncMaster 920 19" widescreen LCD monitor that has recently started having troubles starting. When I apply power (with a VGA cable attached to the PC), the blue light comes on, I hear something in the power supply making a bit of noise, then it turns off. It seems to be about a 2 second cycle. I've been able to get it to start a handful of times, and it works fine once it is started.
Note: If I remove the LCD ribbon, I can get the monitor to power on each time, and respond properly (obviously with an all-white screen).
So I started digging around and I found that there is a swollen Samxon GK 1000uF 10v cap on the board. I would like to recap the PSU and the control board, but I'm having a bit of trouble matching up the proper replacement parts (ESR/ripple/etc). I was hoping someone could point me in the right direction on which series replacements I should use. My electronics knowledge is a little rusty, but from what I've been reading, ripple current needs to be equal or higher. Its mostly ESR I'm having trouble comparing. Do I just compare the impedance, or is there more to it?
Here are the caps I'd like to replace (information was collected from the various data sheets):
Code:
Component Value Voltage Model/Series Brand Ripple Current Dimensions Temp C820, 821, 826 47uF 25v SH Su'scon 110mA 8x12mm 125° C501, 817 470uF 25v RZD Lelon 1144mA 10x16mm 105° C818* 1000uF 10v GK Samxon 1430mA 10x16mm 105° C815 1000uF 25v RZD Lelon 1888mA 12.5x20mm 105° C119 100uF 16v KM Samxon 125mA 5x11mm 105° C124 220uF 10v RGA Lelon 175mA 6.3x11mm 105° C127, 133, 141 22uF 16v SK Su'scon 63mA 5x11mm 105°
Attached Files
I think I'm ready to start picking some caps, starting with the Panasonic FM/FC series, if they have matches...
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