anyone experianced with repairing pc monitor????

[alucard2050]

i have a 19" monitor. made by samsung. it was manufactured in 1999 so its not that old. my problem is it is not turning on. its getting power and i've checked the fuse in it and its OK. right now i have the case off of it. when i press the power button the little green light doesn't even come on. when i have it plugged in it makes this little clicking noise from the board but i don't know which small part in there its comeing from...does anyone know what the clicking noise might be or if its normal? and any suggestions on how to diagnose the problem or a website i can check out.......i am forever in anyones debt if they can help me fix this thing........

[grouch]

alrighty, i've been doing this stuff a while now. you do realize you are dealing with several thousand volts in there right? don't touch anything near the tube or that may be your last post (forever!!)
That was my disclaimer so i am not responsible if you kill yourself trying this stuff.

here's what you do now. that click you hear is the power relay trying to pick up when you push the button. look for the relay it should be about 1x1 inches or less in size normally black. now on the other side of that board on the leads from the relay you want to look for any "fisheye" a little ring of bad solder on the lead that causes the connection to be a high resistance. with power turned on you can go from the tip of the lead to the ring around the lead with an insulated wire to make contact around that fisheye. if you make the connection and the monitor turns on like it is supposed to you know you have the right bad lead. then turn power off and unplug the monitor then spark up the soldering iron. when it's hot just heat the lead up real fast just long enough to meld the solder in there and make it flow into a proper connection.

I really hope that is the problem if it isn't start tracing the lines back to power input until you find the lead that is broken.

hope it helps ya. if it does send me a post saying so. that way i will know it helped you.

(and if that relay is all good and you still have problems check the continuity of your switch on the front of the monitor. if you switch on and off alot you may have just worn out your switch. but from what you said i would go to the relay and see if it is working good or not. good luck)

[alucard2050]

thanks for the help. i might be a couple of days before i have time to look into it but i will reply if it works. one more question, the clicking is constant. not just when i push the power button. and yes, i will take heed to your warning. i touch NOTHING when its plugged in. i've worked with alot of equiptment in the past and I do know what its like to get jolted one good time........thanks........

[grouch]

You're welcome and be safe.
I'll look around for an answer to the constant clicking thing. I thought it was just a single click
turn it on with the cover off and see if you can tell where it's comming from but I bet dollars to doughnuts its that power relay.

Be safe!!

[alucard2050]

i can hear a general area of where the clicking is comeing from. its around the section of where the power goes into the board. i can't get my ear to close. to many electrical things but there is a small black box next to a small blue box. each are about an inch square so i guess one of those is the relay. the black has 4 prongs on the bottom that go into the board. i'll first try replacing it then i'll try the blue one, after that i don't know where to look. all the solder joints look good and nothing looks burnt up. if i can't get it then i'll take it to a repair guy who will charge 30 bucks to diagnose the problem. the monitor is 19" and i got it for free. they just didn't bother with trying to fix it.....thanks.......

[Anonymous65]

The clicking sounds is from the switch-mode power supply. What is happening is that the power supply is going into safe mode because something is drawing to much power, or there is something wrong with the switch mode power supply itself. But normally, it's the horizontal output transistor that has a short in it, and has to be replaced. However, if you don't know what you're doing, I would not try to replace it. The transistor operates at 1000V spikes, and has to be a correct replacement. You will normally find a dead short between the collector and emitter, or base and emitter.

[alucard2050]

skittelsen, you have lost me on the terminology. if that is the problem how hard is it for someone who knows what their doing to replace it??? i think i'm gonna take it somewhere to get fixed. if it'll be worth it.....

[Starfire70]

Don't forget that moniters and tv can hold power so be carefull even when it is unpluged or off or you may get the shock of your life.

[grouch]

starfire has obviously ripped into a monitor before. still tasting it?? lol

they are right about the transistor but when i originally told you how to fix it i only knew of one click and that would have been the fix for one click.

anyway, if you didn't catch all the terms he was talking about for the transistor then you may want to spend the $30 and have it fixed by a tech. i don't recommend learning how to play with solid state components on something with thousands of volts attached to it.

[wellmashed]

I'm with grouch on this one.

Plugged or unplugged it'll give you one hell of a belt if you touch the wrong bit.......

And you will feel it......

For weeks.....

[alucard2050]

don't worry you all. i'm gonna take it to get it fixed. i would love to be able to do this myself. small technical repairs i'm pretty good at but this is definatly way out of my leage. thanks for the reply's...................