I'm trying to create this for a home project but have a few concerns. I simply want to take the 110v from a wall socket and take it down to 5v for a cell phone charger and understand so far:
110v > Stepdown transformer (12v) > Rectifier > Cap for stabilization > 7805 Regulator > +5V...
Only thing is, I've opened up a plug in wall charger and there is a lot more to it than that! Not to mention, the transformer inside these are tiny, and I can't seem to understand what is going on in these wall chargers, it seems a lot more in depth than the instruction...
mscott03
Member
Last Activity: 06-11-2013, 11:26 AM
Joined: 08-23-2010
Location:
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5v Wall Charger
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Re: Acer AL1916W
Which pin is #1? Looking at the top view is it going to be marked by the symbol (upper left) or the circle indention (lower right).. ?... -
Re: Acer AL1916W
I replaced the fuse and noticed something in the right direction, now when it powers up the lights flash or flicker for a second then shut off..Leave a comment:
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Re: Acer AL1916W
When I test one direction I get 0L, and the other way continuously climbs from 2.4k Ohm up. Blown fuse? I will replace it tomorrow morning after checking back later with you all.Leave a comment:
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Re: Acer AL1916W
You guys are awesome! When I test the F200 fuse should I have it off the board, or will it test properly still soldered on?Leave a comment:
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Re: Acer AL1916W
Meter reads .764k ohm on first and .761k ohm on second....Leave a comment:
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Re: Acer AL1916W
Edit: Replied too soon before visiting the site! I see which contacts those are -Leave a comment:
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Re: Acer AL1916W
IC201 and 202 have this p/n:
P605
BZ6G1S
U101 and 102 have this p/n:
B U3
PC817
As for measuring resistance of the S1 - S2, and S3 - S4.. How do I know which contacts those are? Mine are not labeled, not sure if they normally are.
F200 looks fine, but I am not sure what a bad one looks like, doesnt seem to have any damamge to it though....Leave a comment:
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Re: Acer AL1916W
The dark green caps are Taicon.
I just finished replacing all the bad caps since I got the new ones today and still no power to the lights. LCD works, image shows up, green power light comes on, just no juice to the lights..Leave a comment:
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Re: Acer AL1916W
Thanks everyone, I already removed the caps from the board and placed an order with digikey - I will get the replacements installed asap and keep everyone posted!Leave a comment:
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Re: Acer AL1916W
Yeah there are a few that are bloated, should my first step be to replace those?Leave a comment:
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Re: Acer AL1916W
Hey guys! I just got around to getting some good photos, and noticed only 1 thing with my eyes that may be wrong, it looks like two resistors (?) have solder touching them together (Marked with a red arrow). Let me know if you can see anything I cant.....Leave a comment:
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Re: Acer AL1916W
I guess I am just jumping to quick conclusions, and should probably test more. The LCD is working, just the lights arent turning on - does that mean the bridge rectifier is working properly?Leave a comment:
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Re: Acer AL1916W
OK, I will work on that tonight. Any suggestion on which one / where to order a new rectifier from?Leave a comment:
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Re: Acer AL1916W
Hey guys- I've been searching for this info all day and glad I found this place! I started to test my rectifier and noticed my numbers were all over the place.
Does anyone have the specific range that all the contacts need to have between the others?Leave a comment:
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