Hi everyone!
My friend gave me a n2750w after a "computer guy" looked at it for him and told him it cannot be fixed.
It apparently has what you folks here dub the "two seconds to black" problem. It powers on OK, screen flashes up (for less than 2 seconds) and then the backlight turns off. The LCDs still work, if I move a mouse across the screen it is vaguely visible.
I just did a simple online search for the problem and discovered that bad electrolytic capacitors (whatever they are) may be the problem. I went to a third party vendor who sold me a kit that would replace the bulk of the capacitors on the power supply board. I examined the board prior to swapping out the capacitors and could not find any that were bulging, broken, askew or otherwise obviously bad. Nevertheless I changed out all the capacitors, with no results.
At this point I was going to next change the fuse (labeled T4AH250v), and that's when I discovered your forum. I read up a little here and decided to see if you can give me further advise.
Please keep in mind the level of my noobishness (I do not have a background in EE, I own a soldering iron but I do not own a multi-meter, I haven't had a math class in over 20 years). As far as the fuse goes, I've contacted numerous local TV / computer repair shops (believe it or not we do not have an electronics store in my beautiful burg) but none will sell me a replacement fuse. Can you folks recommend somewhere online I may find such a part? I believe it to be a time-lag 4 Amp 250v fuse, is that correct?
Although I would love for the fuse to fix the problem, I'm anticipating it will not, and thus I will be forced to move on to the next step. What do you experts recommend next?
Thanks for any response, really. I searched the forum and found the service guide for this model and have already downloaded it and I'll look through that today.
My friend gave me a n2750w after a "computer guy" looked at it for him and told him it cannot be fixed.
It apparently has what you folks here dub the "two seconds to black" problem. It powers on OK, screen flashes up (for less than 2 seconds) and then the backlight turns off. The LCDs still work, if I move a mouse across the screen it is vaguely visible.
I just did a simple online search for the problem and discovered that bad electrolytic capacitors (whatever they are) may be the problem. I went to a third party vendor who sold me a kit that would replace the bulk of the capacitors on the power supply board. I examined the board prior to swapping out the capacitors and could not find any that were bulging, broken, askew or otherwise obviously bad. Nevertheless I changed out all the capacitors, with no results.
At this point I was going to next change the fuse (labeled T4AH250v), and that's when I discovered your forum. I read up a little here and decided to see if you can give me further advise.
Please keep in mind the level of my noobishness (I do not have a background in EE, I own a soldering iron but I do not own a multi-meter, I haven't had a math class in over 20 years). As far as the fuse goes, I've contacted numerous local TV / computer repair shops (believe it or not we do not have an electronics store in my beautiful burg) but none will sell me a replacement fuse. Can you folks recommend somewhere online I may find such a part? I believe it to be a time-lag 4 Amp 250v fuse, is that correct?
Although I would love for the fuse to fix the problem, I'm anticipating it will not, and thus I will be forced to move on to the next step. What do you experts recommend next?
Thanks for any response, really. I searched the forum and found the service guide for this model and have already downloaded it and I'll look through that today.
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