I went to my brother in law's house. He had a garage clean out. The rule was, anything I could grab, I could keep. That included an LCD monitor. A very nice Xerox 1280x1024 monitor. (not sure on diagonal size but it is big!) This monitor must have been £200+ new, as it was manufactured in 2005. So, this is the final part of my gaming PC, which has cost me so far £35 for a HDD. (Everything else was free. And there's a 5.1 PC surround system on the way too!)
It doesn't work, though. You can plug it in and the blue power light will light up, then go out, and repeat this process. After a while, you do get more - the display starts working. It will display an image for a few seconds, but soon lines will form on the image and the display will go completely white. Here's a video.
http://www.youtube.com/watch?v=-DhTFSTRwA8
So, what do you think the problem is?
It begins with "C" and ends in "apacitor". Yes, it's another case of cheap, bulging capacitors. When will manufacturers learn? Or do they know it will happen and they do it regardless so you buy a new monitor?
These caps were well specified (470u 25V) for a 5V and 12V power supply. However, they are a cheap brand, which probably means their ESR and ripple current ratings were crap. They are also next to the schottky diodes for the power supply, which probably didn't help heat wise.
Replacements have been ordered. All 470u 25V caps will be replaced with Panasonic 470u 25V.
It doesn't work, though. You can plug it in and the blue power light will light up, then go out, and repeat this process. After a while, you do get more - the display starts working. It will display an image for a few seconds, but soon lines will form on the image and the display will go completely white. Here's a video.
http://www.youtube.com/watch?v=-DhTFSTRwA8
So, what do you think the problem is?
It begins with "C" and ends in "apacitor". Yes, it's another case of cheap, bulging capacitors. When will manufacturers learn? Or do they know it will happen and they do it regardless so you buy a new monitor?
These caps were well specified (470u 25V) for a 5V and 12V power supply. However, they are a cheap brand, which probably means their ESR and ripple current ratings were crap. They are also next to the schottky diodes for the power supply, which probably didn't help heat wise.
Replacements have been ordered. All 470u 25V caps will be replaced with Panasonic 470u 25V.
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