Ive been scrolling through the net on all types of solutions but none fit my problem also have another thread on same problem wrong location(sorry).I checked the power board(with my limited electronic skills from back in 94) and the only thing i found was a transistor#bd601 on the board that's got darkened prongs on all four...?Any suggestions would help...
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Re: Dell e152fpb no back light
Well i quess i should say hello to all, i'm new to this site and in need of a serious repair (to me anyways) If you have any Q's on irrigation i might be able to help....lol -
Re: Dell e152fpb no back light
OK, first problem - you should have posted in the 'Computer displays' section. No biggie. Troubleshooting based on color of leads is seldom successful (unless they are covered in burnt plastic).
The Dell E172FPb is known to have a common problem which results in no backlights; I don't know if the E152FPb has the same problem. Take GOOD pictures of the power supply board front and back, attach them to your next post, and someone will be able to give you troubleshooting tips.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Dell e152fpb no back light
file:///C:/Documents%20and%20Settings/liz/My%20Documents/My%20Pictures/misc%20pics/misc%20pics%20001.jpg. Hope this works.........Comment
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Re: Dell e152fpb no back light
upload the pic please. see bottom of new post window and select "manage attachments"sigpic
(Insert witty quote here)Comment
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Re: Dell e152fpb no back light
The pic is too big and not able to crop it...My output is 58v at the end.. thats about as far as i got....sorryComment
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Re: Dell e152fpb no back light
Try setting your camera to a lower resolution. Also, most picture editing software will allow reducing the resolution of the pictures.Originally posted by Maluko75
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Dell e152fpb no back light
Ok lets try this again.......Comment
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Re: Dell e152fpb no back light
Ok there, man that was a mission.....Attached FilesComment
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Re: Dell e152fpb no back light
No pain, no gain. The thrill of success will be enhanced by the struggle to reach the goal.Originally posted by Maluko75
It's a pretty good picture, but a couple of tips to improve the next one. Turn off the flash and use a tripod to steady the camera. If you have steady hands and excellent lighting you may not need the tripod. The flash tends to 'white out' portions of the picture.
First of all, what have you done with this board? (Replace caps, resolder transformers,cast a spell, curse?)
The inverter circuit on this board looks similar to the one used on the E172FBb, but the layout is different. I have attached an edited version of the picture. 4 transistors have been circled in red. They should all have the same part number, C5707. 2 transistors have been circled in blue. They should have the same part number, FU9024N. Check these transistors for shorts. I have also circled two ICs in green. What are the part number of these ICs.
PlainBillAttached FilesFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Dell e152fpb no back light
the small ic reads 063ac/kfh414 and the big one reads 42ayt8m/tl1452acnComment
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Re: Dell e152fpb no back light
I did change the transitor the big one on the left side by the large cap(cause of the burnt legs)and nothing same thing..Comment
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Re: Dell e152fpb no back light
Oh i did put some vodoo oil hoping to make it work...lolOriginally posted by PlainBillComment
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Re: Dell e152fpb no back light
PlainbillOriginally posted by PlainBill
spotted small error because I made same mistake myself when renewing transistors
the blue and the red circle at top right need to be swapped,you have mos for tran and vice versa
also might help the fuse no doubt dead, its just in front of big heatsink needs markingComment
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Re: Dell e152fpb no back light
I checked the fuse and it beeps continuity and the blu and red you want me to swap em out?Comment
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Re: Dell e152fpb no back light
To check for shorts,i gotta take em off the board or?Comment
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Re: Dell e152fpb no back light
No, wait untill Plainbill gets back to you, he will explainOriginally posted by Maluko75
(One blue circle should red and visa versa)Last edited by Bobdee; 09-01-2009, 05:38 PM.Comment
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Re: Dell e152fpb no back light
ah ok..Comment
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Re: Dell e152fpb no back light
Thanks for pointing that out. This was my best guess, that's why I was suggesting he check the part numbers. I was trying to identify the fuse, but wasn't sure where it was.Originally posted by Bobdee
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.Comment
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Re: Dell e152fpb no back light
The fuse is to the right of the switching transformer right below the heatsink the main switching FET is on.
It has green text on it just like mine did probably made by Bussman boxed it in green.Attached FilesLast edited by Krankshaft; 09-01-2009, 06:57 PM.Elements of the past and the future combining to make something not quite as good as either.Comment
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