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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Yes. i connected a known good video signal source and also tried without any video source. The result is the same.Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
So, in summary, when this display is plugged into a known good video source with a video signal on it (which has not timed out and blanked) you see the screen light up, then a "no video" message, then it blanks? That suggests the problem is in the video card or a compatibility issue with the video source. Verify that power is getting to the video card and that all of the connectors between it and the other board are fastened properly (not, for instance, offset by one pin vertically or horizontally, if that is possible with these). If there is a second video input (VGA when you were using DVI, or vice versa) try that. If not, try another video cable. Verify that the video signal is one that the monitor can accept (especially the refresh rate). Most Displays will give a "no video" message and shut down like that if they are fed a signal that is outside the range which they can handle.
Repairing the video card, if it is truly blown, might not be easy. Those tend to have big ICs on them and a lot of surface mount components.Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Hi again , thanks for the fast input.
Ok so i replaced the rest of the caps with the same result.
Tryed this aswell , kinda smart and simple
, and it didnt switch sides so i guess one lamp is broken ?
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Re solder the legs of the transformersComment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Next step change the fetsComment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Anyone selling mosfet kit with fuse?Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
http://www.chsinteractive.co.uk/elec...r-ass-make.htm
fuse 4a should doComment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
I might be having the same problem with the same monitor. When it is turned on the Acer logo flashes on then the screen goes black (I don't see No Signal however). My computer recognizes the monitor via the DVI. Changing rez and refresh does nothing. I am using cables from a second monitor that works fine. Abit of history, the display was having issues when the computer would go into stand-by. When the computer was brought out of stand-by the display would sometimes remain in stand-by. I would have to turn the monitor off and on a few times or reboot the computer. This got progressively worse until it stopped working as previously mentioned. From reading the rest of the posts here I suspect it could be an issue with MOSFETs but I only have basic knowledge of electronics. Are MOSFET's responsible for the clicking sounds in a monitor as it changes from one refresh rate to another? If I had to guess it seems the monitor just doesn't kick in. I have replaced several caps that looked suspect (to be truthful I think they were fine).Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Please post some photos of YOUR power board for the following reasons: 1) Acer is notorious for using power supplies from various suppliers fror the same model monitor 2) By looking at your board, trained eyes may spot something you missed 3) photos allow us to point out components for you to test.Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Wow you guys are on the ball with this forum. Thought I would post and check back in a bit to see if I got a response. Here are two pictures I hope will help. I already changed cap C28, C29, CS32, CS36. As you can tell those are the caps that are accessible when the plate is still attached to the heat sink. I didn't take it off until you requested pictures. I was worried about damaging something while prying. It came off easier than I thought it would. Unfortunately I found this site after purchasing a cap kit off the web. It came with KY and NHG caps which are not the brands you sell. Let me know what my next step should be. TIAAttached FilesComment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
I see 13 small caps on your board. Let me guess, the kit came with 12 caps? Did you change the small cap next to the large 450V cap?Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
The kit came with 13 caps but not a 3.3uf cap like the little one next to the big 450V 100uF.
I got the following caps:
one - 470uF - 35V NHG
one - 470uF - 35V nichicon
two - 470uF - 25V KY (used one)
three - 1000uF - 10V KY (used one)
one - 470uF - 25V KY
three - 33uF - 35V KY (used one)
one - 33uF - 50V KY
one - 100uF - 35V nichicon
I need to correct my previous post because I didn't replace C29 like I thought I did. I will replace the rest of the caps with what I have if that is the best next step. If I should replace the caps in the list of above with better brands please let me know. Thanks for all the help so far.Comment
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Yes, replace the remaining caps. Also, email the ebay seller and tell him/her that you are missing the 3.3uF cap. If they are selling a "kit", it is reasonable to assume you would get all the caps for your board. The 3.3uF cap plays an important role in the startup of the SMPS. It can be bad with no signs of bloating.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Sorry, the caps are not used. Those are the ones I have used on the board already. I didn't get to install the rest of the caps. I think what I will do is install the caps to see if the problem goes away. If it does then I will invest in the proper caps and fix the PSU properly. I have already replaced the monitor but it would be nice to have the spare. If I can get it fixed then there will be a sense of accomplishment to boot.
How do I tell what series a cap is? On the nichicon there is VZ(M), H1034 and 105°C for markings.Comment
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If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
hi there an please help.
have the same problem like all of you...acer logo for second than black if i dont turn on-out-on-out....
want to replace the parts now which are responsible for but i have no f+++ing idea of how i get the metal schield from the inverter
..........
well, i just cant get used to use manual power on electronic parts... anyway got it off now.
so thanks, that problem is solved. just wondering which caps are the reason for the shut-on problem.
anyway
am just good enough to do what am told about electronic repairs . can someone who solved that shut-on problem please help me
thanks lg cComment
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Good day!
I have a Samson Resolv studio monitor that has no sound output. I've opened it up and found two caps that are bulging on what I believe to be the power supply section of the amplifier board. The board is marked Resolv 65A AMP V1.2. The caps in question are YUSCON, 2200uF, 35V, 85C temp and have markings of RA(P) and are 16mm x 25.5mm tall. I've attached the schematic and the caps in question are C5 and C6. I'm assuming they are low esr caps. I've tested both caps and they test low uF, nowhere near 2200uF.
I'm going to replace the caps and I'll be the first... -
Normally, I never post repairs this quick after I do them, because… I am usually very slow.
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.
For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).
https://www.badcaps.net/filedata/fetch?id=3591771
https://www.badcaps.net/filedata/fetch?id=3591772
It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:
https://www.badcaps.net/filedata/fetch?id=359177... -
Here's another LCD monitor repair: Westinghouse L2210NW.
Quick specs: 22” CCFL backlit LCD, 1680x1050 max resolution (16:10 aspect ratio)
I got it with a bunch of desktops PCs from a repair shop that was trying to free up space a few years ago. It seemed like a cheap monitor, so I didn't really care that much at first when I picked it up (and indeed it is, picture-wise.) But hey, free is free, so I can't complain. Moreover, it looked clean and the screen didn't have any significant scratches or blemishes.
Pictures of the monitor outside/case after a brief... -
Hello,
First, I am a complete noob with high voltage stuff. I'm learning, but I need help by someone looking over my shoulder.
I recently came into posession of a Heathkit IO-4205 5MHz Dual Trace Oscilloscope. The documentation is copyright 1978. I'm told it works.
I opened it up to check the caps before I applied power, and found the following black caps and wanted to know what they were. They are on the power supply board. I was able to read the name and model and came up with, "Nytronics 162J-1, 0.1uF, 20% tolerance, 2000VDC."
...
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