Re: Acer AL718: It Goes On And Off
It's whay to complicated for me now,and trow everyting in the trashcan,thanks for
your time and info.
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Re: Acer AL718: It Goes On And Off
the ID of the Mosfet is 27G11 ,939030 could not find anything on internet of this type.
the 8 leg chip on the backside will I' later check,but i'am litle baffeld on how to do it,
sounds verry complicated.
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Re: Acer AL718: It Goes On And Off
then it's defect ,i'll get no readings ,on none of the legs !,its dead for sure,
the other one hoever gives good readings.
Will look for replacement tomorow at the local store.
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Re: Acer AL718: It Goes On And Off
Found a' other from the outher board with readings,
A.Black
B.24 Ohm
C.36.5 Ohm
A.13.2 Ohm
B.Black
C.13.2 Ohm
And has a marking on it like ->|o|<- .
name&type.
LT6207
SBF1045CT
Maby usseble as replacment ?
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Re: Acer AL718: It Goes On And Off
Okay I'll get zero on all legs in Ohms mode,so its defect for sure,I have already removed it
from circuit,and still read 0 ohms on all legs.
so i got to search for a replacment part.
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Re: Acer AL718: It Goes On And Off
Okay I' had the Mosfet taken out and maesurd G=open D&G=close in beeb mode.
In Diode mode G+=0,D-,G+=.28 and G-=0,D+=0,G-0,So only the center and
Right leg gives a' reading,hope thats understandeble else I have to make a' photo
perhaps.
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Re: Acer AL718: It Goes On And Off
The Mosfet 27G11 gives (Cold)fluctuating readings on one the right leg .625 on the left
leg noting at all .
Will fabricate some small wire's on the testing area,so i'wont short it again
while testing.
[URL=http://s183.photobucket.com/user/bozo6_007/media/IMG086.jpg.html][/URL]Re: Acer AL718: It Goes On And Off
The Mosfet 27G11 gives (Cold)fluctuating readings on one the right leg .625 on the left
leg noting at all .
Will fabricate some small...Last edited by nick2012; 12-06-2013, 04:47 PM.
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Re: Acer AL718: It Goes On And Off
I meant powerboard/PSU instead of mainboard,there are maby usable parts on it?
last days not must testing done, A' bit busy with outher things.
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Re: Acer AL718: It Goes On And Off
okay will try all that, I have a spare test lamp/tube from another defective display the
tube works fine for testing,I have also a'spare Mainboard from where i can use spare parts,
like the big Cap enz.
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Re: Acer AL718: It Goes On And Off
The tubes are about 2mm diam,so they are very fragiel,but will atempt to get closser in
to solders.
At the time off shorting the Logic bord was not connected,so fault must still in the power
board,I'll suspect there must be some fuse around that area.
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Re: Acer AL718: It Goes On And Off
I'have put the a' picture off the measure area where the power markings text stands,Its
the band wirecable that conect the two boards.
Is it realy nesesary to remove the rubber endcaps,they are so very fragiel ?
[URL=http://s183.photobucket.com/user/bozo6_007/media/Acer%20x223hq/IMG085.jpg.html][/URL]Re: Acer AL718: It Goes On And Off
I'have put the a' picture off the measure area where the power markings text stands,Its
the band wirecable that conect the two boards.
Is it realy nesesary to removeLast edited by nick2012; 12-04-2013, 02:00 AM.
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Re: Acer AL718: It Goes On And Off
I'Have manege to get 1 of the bulps out of the metal strip,but how to undo the rubber
end aps for inspection ?
[URL=http://s183.photobucket.com/user/bozo6_007/media/Acer%20x223hq/IMG083.jpg.html][/URL]
[URL=http://s183.photobucket.com/user/bozo6_007/media/Acer%20x223hq/IMG082.jpg.html][/URL]Re: Acer AL718: It Goes On And Off
I'Have manege to get 1 of the bulps out of the metal strip,but how to undo the rubber
end aps for inspection ?
[URL=http://s183.photobucket.com/user/bozo6_007/media/Acer%20x223hq/IMG083.jpg.html][/URL]...
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Re: Acer AL718: It Goes On And Off
While measering the voltages,I have made a' shorting and now is the board dead,the main
fuse is still okay but the others i' dont know where they are located,while measering
the 5V I did see that It wash 5.2V and verry unstable ,so maybe badcaps then.
But first I'll have to get it back to live.
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Re: Acer AL718: It Goes On And Off
Ii'have put a'movie on youtube of the the tubes.
[url]http://www.youtube.com/watch?v=UJrk13PVwfw&feature=youtu.be[/url]Re: Acer AL718: It Goes On And Off<b...youtu.be[/url]
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Re: Acer AL718: It Goes On And Off
Okay its a'major job again but will do so ,and inspect then extra.
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Re: Acer AL718: It Goes On And Off
I found a' Dutch Electronics forum,and hope that they can help also,so options from 2 site's.
Did not maneged to get the brightnes to set lower,simply there's no time to get there
picture is gone before entering the Menu.
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Re: Acer AL718: It Goes On And Off
Dear god 1800vac the meter go's only to 600V,you stated measer "cold" so i did exacly that
I will try the brightnes test,but it must done in the onscreen menu ,that would be dificult
in a'very short time.
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Re: Acer AL718: It Goes On And Off
At S1 & S2 I' get .471 .
At S3 & S$ I' get .473 .
Meter on 2K
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Re: Acer AL718: It Goes On And Off
Oeps I'have putting all all back in place
But will first measure the voltages on the powerboard,after that i'l disamble the display
again for furter inspecktion then.
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