Re: Please help me Packard Bell Maestro W220 3 seconds backlight
it seems so.
me.just88
Member
Last Activity: 02-12-2017, 04:54 AM
Joined: 03-20-2013
Location: Ocnita
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
it seems that the thin wire within the transformer has broken from nowhere,I've had other monitors that when one of the transformer was bad,the simptoms were diffrent,both lamps where lighted halfway. no light at all it will be a first.Leave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
ok sorry,so this is what i've done, I put the DMM on ohm meter,then checked the transformer pointed in picture below,and I read value 1 (I mean nothing happend actualy) after that I checked the other transformer and i read 740,then i realised that the one with 1 value was broken,after that i replaced the one with problems,and that was it.
I hope that my answer helped.
thank all for your help....Leave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
i've compared the invertors and like Joe Black said the result where not identic, after that i changed the bad inverter and now is working just fine.thank you everyone for ideas and fast response.Leave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
I have a multi meter,if it helps i have also an osciloscope,but i don't know to use it
anyway on inverter transformer i have:
730 703-190DTLB-DH
EEL19-AD1700
DARFON 2025E 734075
the yellow big transformer:
730-102-170DTLA-AH LAE ER2817 0734Leave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
i don't think that i get the question, "CapLeaker" said to me to "What you can do now is to verify each of the transformer outputs with your ohm meter and check if there is a bad transformer." and i was saying that i don't know how to do it.
when you said the details from the top of the transformers i understand the numbers written on it,and they should be in the photos above,if that's not it,i don't know what other details. thanksLeave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
sorry bad for bad posting.
There is a problem,i don't know how to check the transformer,any instructions or tutorials will help. thanksLeave a comment:
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Re: Please help me Packard Bell Maestro W220 3 seconds backlight
here are the photos,i forgot to mention that my board is PI 190DTLB 5,now i will try to check the transformer...Leave a comment:
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Please help me Packard Bell Maestro W220 3 seconds backlight
Hi to you all i'm new to this forum so be a little gentle,ok so i have a 22" Packard Bell monitor with a common 3 seconds backlight problem.
At first i thought that it has bad caps or bad lamp,then i inspected the caps to see that no one of them are bulged.
next i have put my sparing lamps to see witch one is bad,and to my surprise one pare of lamps dind't start at all,i changed again the laps wich didn't power on with other spare lamps,and again the same problem,please help. -
Re: Problems with Samsung 740N monitors
hi ,i'm new to this forum.
I also have the same problem like "ethernet","lit","selldor"
I chenged all the caps and fuse,after that the monitor is restarting.
has anyone solve that problem?Leave a comment:
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