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SJones88
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Last Activity: 10-15-2014, 06:11 PM
Joined: 01-28-2014
Location: Tamworth
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    I have just replaced the resistor with a 1w 0.22 ohm one, the monitor is getting further now, so it doesnt automatically go into standby, instead the power light is constantly on, with or without being connected to a PC.

    The PC is recognizing the monitor too (not sure if it was before) I have also tried shining a light on the screen to see if it was the backlight and I can't see anything (it wouldn't explain the power light being constantly on with no input though)
    also no blowups or sparks so thats also a plus

    I am...
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    Last edited by SJones88; 10-13-2014, 02:20 PM.

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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    is this a suitable replacement for the RM801 fusible resistor on the bn44-00195a
    [url]http://www.maplin.co.uk/p/wirewound-3-watt-022-ohm-resistor-w0.22[/url]

    its a different type of resistor that instead of being rated at 1w its at 3wRe: Samsung Syncmaster 245BW<br /> ...t 1w its at 3wRe: Samsung
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  • SJones88
    replied to Source for RM801 fusible resistor 0.22 ohm 1 W, Samsung BN44-00192A PS board
    in Troubleshooting TVs and Video Sources
    Re: Source for RM801 fusible resistor 0.22 ohm 1 W, Samsung BN44-00192A PS board

    I have came back to this board after leaving it a while, took another look and noticed this resistor had blown too, I was able to find this at a local store, its fire-proof and meets the 0.22ohm criteria, however its a 3w resistor, I was unaware till just this was a fuseable resistor and as this is a different type than what was in there (wirewound) I am unsure if it is a suitable replacement.

    [url]http://www.maplin.co.uk/p/wirewound-3-watt-022-ohm-resistor-w0.22[/url]Re: Source for RM801...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Thanks selldoor, unfortunately I am going to need a little help on this one, when you say the main board is this the logic board or the inverter board.

    If its the logic board there are 2 connectors, is the intention to test all pins on both, further to this the connections to the separate boards have multiple pins for each part (e.g. 3 pins for 5.3v 3 pins for GND etc) shall I test them all, or am I looking in the wrong area?

    and I am guessing the ground screws can be any of the 4 corner screws? as I think the screws are easier...
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    Last edited by SJones88; 02-09-2014, 02:23 AM.

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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    I did not have a PC connected as the monitor would normally cycle through the digital / analog input then go to standby mode.

    When I say nothing changed, I was referring to the last test I did before replacing the capacitor, cleaning the glue off, resoldering the small blue capacitor and replacing the 2 internal fuses, the replacement of the 2200uf capacitor made no difference.

    I will plug in a PC signal and report back.

    its hard to be internetless, we all seem to depend on it so much nowadays but theres no need...
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    Last edited by SJones88; 02-08-2014, 06:38 AM.

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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    I have reassembled the monitor and nothing new has changed, plug the power in, turn it on at the switch and press the power button, blue power light comes on and stays on, where standby would kick in after a short while.

    can turn it on and off with the front button but thats it.

    Next step to suggest? replace more caps or test transistors with one leg unsoldered?
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Thanks selldore for the info, true the postage is more expensive per cap however the ebay store I got it from is the only one to sell the rectangular one and none of the local shops sell caps

    so leaves some of us little choice, as to the replacement cap its on the right way, I read a fair bit of these forum posts over this board and the other board for this monitor (admittedly not all) as far as I can tell there are no other issues so unless replacing the cap shows another fault there shouldn't be any explosions :P saying that your advice...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    ok, so that large cap came in the post a few hours ago, I have just replaced it, a bit of the metal ring that was on the hole for one of the legs had came away but half of it was still there, my soldering skills arent that great but its now held firmly in place.

    what would be the next step? plug it in and test it or is it at this point worth while de-soldering resistors and testing them?

    would testing at this point help to identify the cause? and thus order replacement parts with more capacitors.

    also what capacitors...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Thanks for the info, the post I am referring to is from the previous page [url]https://www.badcaps.net/forum/showpost.php?p=415406&postcount=626[/url] the only scorch marks found was the one shown in the picture, the resistors all show some sort of resistance while testing them with BOTH legs still soldered (I was really hoping I wouldn't have to do too much soldering but this doesn't look to be the case)

    the 2 capacitors next to the scorch marks seem fine, the long blue one reads 15nf from the specified 12nf it should be and the ceramic...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    I have eventually found the time to clean all the glue up and I also now have a multimeter and ordered another 2200uf capacitor to replace the circled capacitor in the picture.

    I have started testing some of the capacitors, the multimeter can only read up to 100uf so the larger caps are harder to test, however the 2200uf is returning 12uf

    I am just curios to know if you have to remove the caps and resistors from the board to get an accurate test or is measuring them from the soldered contacts underneath sufficient?
    ...
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    Last edited by SJones88; 02-06-2014, 04:46 AM.

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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    thanks budm unfortunately im in the UK and postage would be too high, selldoor not sure how you found that, searched ebay and that one got passed me thanks!
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Thanks! I got one last problem, if it is the rectangular blue capacitor thats gone I cant find anywhere that sells a replacement.

    It says 12 NJ 630v on it, according to [url]https://www.badcaps.net/forum/showthread.php?t=15843&page=3[/url] that means its a 12nF capacitor, on cpc they only sell a 50v 12nf capacitor and everywhere else I have looked, ebay/amazon locally don't sell any, suggestions?Re: Samsung Syncmaster 245BW<br /> ... find anywhere
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    What is the best way to remove this glue? I used a small blade last time.
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Thanks for the advice selldoor, with the ceramic capacitors do they have the same issue as the electrolyte capacitors and do they have a positive and negative as the one I re-soldered I couldn't see any markings on the board or on the cap itself. are these liable to go or are these safe just to clean up and re-use as the short happened at the base of one of these ceramic ones.

    also regarding multimeters, I read somewhere on these forums (and subsequently cant find the post again) that there are 2 types, one that has the sensitivity for the...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    With regards to the issue above I posted, I have done some work towards fixing the monitor, I originally said that I would just get a new board however I thought whats the most I could lose from trying, so following budm's advice I removed all the glue from that area and the small blue capacitor's leg was terribly corroded and just came off with the glue, there was just enough left on the capacitor itself to re-solder it on so I attempted it and thankfully was a fairly clean area to work with, not much else around, so done a pretty good job of re-soldering...
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  • SJones88
    replied to Samsung Syncmaster 245BW
    in Troubleshooting Computer Displays
    Re: Samsung Syncmaster 245BW

    Hi everyone, I found these forums and this post after my 245b went.

    I had sparks popping and a little smoke, taking it apart there was scorch marks on the power supply and on the plastic cover on the back

    looks like a capacitor is/has going/gone and the main short seemed to be from a resistor just below the 'hot' text

    unfortunately I am no good at soldering nor do I know anyone who is so replacing the caps etc (even is this is the main issue and is fixable this way) is not an option.

    From what...
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