Hi all!!
Few months ago my HP L2035 LCD monitor died, no green light.. Opened, and noticed that one of the capacitors 1000 uF / 25V is bulgy.. replaced it with a new one, and BOOM monitor is back and running!!
However, after few months, it sometimes does not power on, and it takes a while for it to power on.. Took it apart, removed ALL capacitors and measured using a capacitor meter, all came OK, put them back, and monitor is working, but having hard time to power on, and sometimes goes off, but after it "warms up" seems to hold OK..
My question, how do I go about fixing this ? or do I have to wait for it to die completely before I can debug ?
I saw I can get a new p/s board for ~$20, but really the educational value is important here, as much as possible.
Is there any measurements I can take now while it is working and compare to when it will not work?
If you don't mind, pls be specific if possible HOW to measure, i.e. from "ground" or from one pin to another? I once measured a live board from wrong pins and that caused.. a small "explosion".. I gather it is always safe to measure to one of the screws/ground, and thats what I do when measuring live boards for DC/AC.
Thanks much!!!
Few months ago my HP L2035 LCD monitor died, no green light.. Opened, and noticed that one of the capacitors 1000 uF / 25V is bulgy.. replaced it with a new one, and BOOM monitor is back and running!!
However, after few months, it sometimes does not power on, and it takes a while for it to power on.. Took it apart, removed ALL capacitors and measured using a capacitor meter, all came OK, put them back, and monitor is working, but having hard time to power on, and sometimes goes off, but after it "warms up" seems to hold OK..
My question, how do I go about fixing this ? or do I have to wait for it to die completely before I can debug ?
I saw I can get a new p/s board for ~$20, but really the educational value is important here, as much as possible.
Is there any measurements I can take now while it is working and compare to when it will not work?
If you don't mind, pls be specific if possible HOW to measure, i.e. from "ground" or from one pin to another? I once measured a live board from wrong pins and that caused.. a small "explosion".. I gather it is always safe to measure to one of the screws/ground, and thats what I do when measuring live boards for DC/AC.
Thanks much!!!
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