Can someone help me find a capacitor for my monitor?

[chj0216]

Hello,

I have Samsung P2770FH monitor and start experiencing on and off issue lately. Basically, my monitor turns off randomly and within a second or two, it turns on again. It used to be once a day, but now, it became more frequent. I don't think it is my Graphic Card issue because I changed the GPU lately. Also normally when my screen contains a lot of black color or so, the turn on/off situation happens more frequently.

I heard that it could be capacitor issue so I am trying to get the replacement part. However, this capacitor looks different than when I expected (It is SMD capacitor?). Here is the picture of the board. I guess 470 and 100 means uF? But I am not sure what is 16T and 16J means. Is J and T just series code and it is 16 Volts? Or 16J? How about 16T? Could someone help me finding the parts?

Thank you so much

 

[Scottray]

Instead of guessing if it's a capacitor issue, you may be better off trying to find a replacement board that has been tested and/or contacting Samsung directly for the a replacement board.

 

[thx1138v2]

470 and 100 are probably micro Farads (capcitance), 16 is probably the voltage rating and the T and J are probably manufacturer codes for tolerances for capacitance accuracy like +/- 10% as an example and/or operational temperature ratings. The T and J could also be a code to indicate the package size and/or type. You would need to find the manufacturer datasheet to determine what it means.

But I don't see any indication in the photo that there is a problem any of the shown capacitors or, for that matter, anything else in the photo.

The only thing I see that could be a problem is what appears to be a scratch on the trace near C520 but it doesn't appear to have gone through to the copper trace so it wouldn't be a problem either.

I would check elsewhere for the source of the problem. The first thing to check is the PSU. They can turn off/on when the voltages go out of spec and come back into spec. It might just be time to do preventive maintenance on the whole computer, i.e. blow out dust, clean everything individually, unseat/reseat all cards, etc.

 

[chj0216]

470 and 100 are probably micro Farads (capcitance), 16 is probably the voltage rating and the T and J are probably manufacturer codes for tolerances for capacitance accuracy like +/- 10% as an example and/or operational temperature ratings. The T and J could also be a code to indicate the package size and/or type. You would need to find the manufacturer datasheet to determine what it means.

But I don't see any indication in the photo that there is a problem any of the shown capacitors or, for that matter, anything else in the photo.

The only thing I see that could be a problem is what appears to be a scratch on the trace near C520 but it doesn't appear to have gone through to the copper trace so it wouldn't be a problem either.

I would check elsewhere for the source of the problem. The first thing to check is the PSU. They can turn off/on when the voltages go out of spec and come back into spec. It might just be time to do preventive maintenance on the whole computer, i.e. blow out dust, clean everything individually, unseat/reseat all cards, etc.

Thank you so much for the answer. Do you mean PSU from the main computer? I already did blow dust and it didn't work. So I have two monitors, this and another monitor. This monitor is the main monitor and another one is extended one. When my monitor turns off, this is the only monitor turns off. Another monitor stays as it is and no problem. That was why I could only think of capacitor. Maybe I will also try with DVI cable instead of HDMI or different HDMI cable? So capacitor looks no problem according to the picture?

 

[ffg7]

it is 470uf at 16 volts. is that capacitor's top smooth or slightly domed? does the power led turn off too when screen goes black? the 24" Samsung monitor I'm using on this computer had same problem & the caps were not domed so did a trial & error by replacing 2 caps & has been working now for at least 3 years. my previous monitor was a 19" Samsung Frankenstein as in combined the working good parts from 2 different non-working 19" models of Samsung monitors to make 1 working 19" with both dvi & vga instead of just vga. I've fixed over 1/2 monitors so far.

 

[chj0216]

it is 470uf at 16 volts. is that capacitor's top smooth or slightly domed? does the power led turn off too when screen goes black? the 24" Samsung monitor I'm using on this computer had same problem & the caps were not domed so did a trial & error by replacing 2 caps & has been working now for at least 3 years. my previous monitor was a 19" Samsung Frankenstein as in combined the working good parts from 2 different non-working 19" models of Samsung monitors to make 1 working 19" with both dvi & vga instead of just vga. I've fixed over 1/2 monitors so far.

Thank you so much for the reply! I don't remember it if was smooth or slightly domed but I am thinking about doing the same thing, just replace it and see if it resolves it? I didn't pay attention to power led, but if the led also goes off, I guess that's more like power supply issue then?
Thanks for the help again!

 

[ffg7]

see if the monitor's power adapter has a light on it & if it does then see if that light goes out at same time as the monitor power light turns off then turns back on.