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.
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Re: Can't seem to open Acer AL2416W case
Thanks Plainbill. I will continue the test when i get somebody to assist me.
@Toasty - DMM on the 2K ohm scale
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
I can not access the menu...
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Re: Can't seem to open Acer AL2416W case
I did the first step but have different results from Mike_S456. Does this mean all transformers are bad? Hope you can guide me what to do next?...Last edited by dt2rz; 11-02-2010, 05:27 PM.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
There is no dim part, all the lamps lights up together. Test it one by one, also lights up. Anyway i tried your suggestion and all lamps lights up like before. I'm wondering why the monitor goes to standby after 'no signal' shows up in screen. Other folks have the green light all the time, just the backlights shutting off By the way, sorry for hijacking your thread....Last edited by dt2rz; 11-01-2010, 05:49 PM.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
How to check these? What DMM setting to use and where to probe black & red wires? Sorry I'm a rookie....
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
f2 = 30.7
f3 = 1.2...
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
DMM set to 200 ohms, both fuse read 00.4...
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
With monitor powered off, put DMM to 20M ohm setting i get 0 ohm on both fuse.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
I don't really know how to check properly, can you tell me how? Here's a picture of the DMM i'm using....
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Acer AL2416W power board
Can somebody help me how to test the power board? Maybe show pins or parts
to check. The problem i'm having is on these thread:
[url]https://www.badcaps.net/forum/showthread.php?t=9626[/url]https://Can somebody help me how to ...p?t=9626[/url]...
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Re: Can't seem to open Acer AL2416W case
After the screws are removed from the back, I used a flat screw driver to get a
small gap on one corner and just open it with my hands. It feels like its going to
break but it doesn't. I still have that same problem but the green light turns
amber about 2 seconds after the logo shows up.
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Re: Can't seem to open Acer AL2416W case
There's another screw at the back of the screen menu buttons.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
[url]http://forum.allaboutcircuits.com/showthread.php?t=21285[/url] tells that
the FETs or transistors are OK to use.Re: Acer AL2416 AL2416W 24" 1920x128...are OK to use.Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
[url]http://forum.allaboutcircuits.com/showthread.php?t=21285[/url] tells that
the FETs or transistors are OK
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Yeah i guess that's the next hard step, finding expensive discontinued parts
Thanks for trying to help though.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
No i can't because i burnt the transistors while removing them from the board
with the soldering iron. Nothing changed with the issue after replacing the parts
so maybe the problem is somewhere else?...Last edited by dt2rz; 10-31-2010, 02:39 PM.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Here are the results i got:
1 +24Vcc Inverter Vcc ====== 23.9V
2 +24Vcc Inverter Vcc ====== 23.9V
3 +24Vcc Inverter Vcc ====== 23.9V
4 +24Vcc Inverter Vcc ====== 23.9V
5 +24Vcc Inverter Vcc ======= 23.9V
6 GND Inverter GND
7 GND Inverter GND
8 GND Inverter GND
9 GND Inverter GND
10 GND Inverter GND
11 N.C N.C
12 Backlight on/off ====== 2.7V
13 Dimmer Brightness control ====== 2.5V...
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Thanks bonney! The 2 fuse on the inverter board are ok. I'll post results after
checking.
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
Replaced the following parts on the inverter board:
-10 caps with 100uf 25v 85*c 2000 hour Chemicon SMG
-Q3 & Q4 with FDD6690, i can't find original P2804BDG
-Q5 & Q6 with FDD6685, i can't find original P5504EDG
Result is still the same. I tried checking the CCFLs one by one and all are
lighting up fine. Can somebody guide me in testing the power supply. Here
are some more pics of the power supply......
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Re: Acer AL2416 AL2416W 24" 1920x1280 LCD Monitor
This is where i'm at right now. Just waiting for the caps i ordered from Digi-key and give it a try....
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