Re: Acer AL1916


I'm not planning on trying the other test, he said it himself there is a chance it could fry the component (if it isn't already) and it's dangerous.


Ok so I retested it, but I wasn't able to get the 3V on the upper pin. On multiple occasions I was able to get 1.5V and once 2.4V, however it seemed like the smallest of movements would change the value I get dramatically. Sometimes I'd shift a few degrees to the left and the value would drop from 1.4V to below 0.3V, and considering the way the components are placed I tried all the angles...

Re: Acer AL1916


Sorry for the delay, just got back to Uni and haven't got used to my schedule yet.

Ok so I Ctrl+F U406, and I took the same measurements that PlainBill asked for in the other thread, and I got the same results, that is:
Left pin: 0.00V
Middle pin: 4.92V
Right pin: 4.30V

And so I proceeded with his test (unlike the other poster I chose the battery version). And I got:
Top pin: 0.4V & 0.01V (We werent able to repeat the 0.04V however, so it could be a fluke)
Right pin: 0.05V

...

Re: Acer AL1916


I've added a new picture (in attachment) of the green circuit board. At U701 (top left), there isn't actually a component. It's been observed in another thread in this forum: [url]https://www.badcaps.net/forum/showthread.php?t=8257[/url]

Even though there wasn't a component in U701, I checked the 3 spots where would've been soldered the pins had they been there (just in case it's helpful) and I also checked the 3 pins for U702. For each of these I used the top screw as my ground.

U701: Top pin: ~0V | Mid pin: ~0V | Bottom...

Re: Acer AL1916

(I had originally uploaded my pictures to mediafire to save bandwidth to the server, but since the guidelines suggest using attachments with a max width of 700px i resized it and attached it)

Ok so on this picture, the cables going off to the bottom right come from the yellow circuit board. I put the black probe on the ground screw under them (from this angle) and the red probe in a few of the sockets at the end of the cables.

I got readings of ~4.47V DC (for brown cable), and ~4.92V (for yellow & green cables). The others I couldn't...

Re: Acer AL1916


As weird as it may be, the continuity test on my multimeter doesn't "beep", instead when I connect the two probes the value goes from 1. to ~0.

Since the fuse (red box) is soldered so close to the board, I can't test the two pins from the top, so I unscrewed the board again and put one probe on each of the two pins/metal patches on the bottom of the board and I got the same ~0.

This means it's good right?...

Re: Acer AL1916


[url]http://www.gbaudio.co.uk/data/mains.htm[/url]
Canada: 120V @60Hz
Voltage across the biggest of the capacitors is ~165V.



It seems I was incorrect, when I looked at it last night the lighting was dim, so today I un-screwed the yellow board and flipped it over it only has 2 pins. Also, the markings on the box read "T2A" and "392". And it looks in good shape.
[url]http://www.mediafire.com/imgbnc.php/1cd5fc1c79bcf15aeeabfbcd1abf703c6g.jpg[/url]
[url]http://www.mediafire.com/imgbnc.php/0dbe6a1f4c27d3d28cda1c009c06cb206g.jpg[/url]...

Re: Acer AL1916


I used the search function inside the service guide with "fuse" and it came up next to "F901", and if I look at the yellow board F901 is a little red box with 3 pins. I was expecting some sort of tube shaped component with one pin on each end.

Aside from that none of the components actually look damaged....

Hi,

after reading a blog post I dug out my Acer AL1916 from my closet in hopes of possibly fixing it. The reason I had stopped using it in the first place is that one morning when I got up I tried to turn it on and neither the power LED or the screen itself would light up.

So like I said I dug it out plugged it in and no surprise here, nothing happened. Now I've already checked the capacitors and I believe all of them are in order, I didn't see any bulging near the top for those that had slits and for those that didn't I couldn't see any obvious bulging either.
...