I have a HP w1858 monitor that I got used when I was back in the states. It had some occasional power issues where the screen would become totally unresponsive after going into power-saving mode. It would have to disconnected from the PC and reconnected to respond again. While unresponsive the monitor would not turn on at all, no lights, nothing. I didn't have time to mess with it at the time, so it was set aside.
I recently came upon a little free time and thought I would check the monitor out again. This time, however, it is totally unresponsive from the start. I tried multiple cables, multiple computers and I still get nothing.
I came across this forum and was hoping the problem would be something simple, but from my limited knowledge, it seems it may be a mess. The caps show no obvious signs of bulging or leaking, the seem to be sitting fairly flush. I did notice some black soot(?) near the main capacitor and transformer on the power board. Encompassed in the soot mess are: positive lead on the main capacitor had some black attached to it, the two blue inrush current limiters(?) appear a little black, the tan resistor was also pretty black (but tested ok), and the side of the transformer also seemed to have some black on the side. A lot of this looked like collateral mess, and I don't see who the main culprit is. Additionally, on the back side of the board there is a section that looks like it might have gotten a bit toasted, along with several hard brown drips on the back, of which I have no clue where they came from.
So all in all, a mess, but I was hoping an educational one. If by some miracle this can possibly be fixed by replacing a few parts, awesome. If not, hopefully it could serve as an excellent example of a board to trash.
If any additional photos could be useful let me know.
Thanks for your advice and time in advance.
I recently came upon a little free time and thought I would check the monitor out again. This time, however, it is totally unresponsive from the start. I tried multiple cables, multiple computers and I still get nothing.
I came across this forum and was hoping the problem would be something simple, but from my limited knowledge, it seems it may be a mess. The caps show no obvious signs of bulging or leaking, the seem to be sitting fairly flush. I did notice some black soot(?) near the main capacitor and transformer on the power board. Encompassed in the soot mess are: positive lead on the main capacitor had some black attached to it, the two blue inrush current limiters(?) appear a little black, the tan resistor was also pretty black (but tested ok), and the side of the transformer also seemed to have some black on the side. A lot of this looked like collateral mess, and I don't see who the main culprit is. Additionally, on the back side of the board there is a section that looks like it might have gotten a bit toasted, along with several hard brown drips on the back, of which I have no clue where they came from.
So all in all, a mess, but I was hoping an educational one. If by some miracle this can possibly be fixed by replacing a few parts, awesome. If not, hopefully it could serve as an excellent example of a board to trash.
If any additional photos could be useful let me know.
Thanks for your advice and time in advance.
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