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 Filesif you find these attachements useful please consider making a small donation to the site
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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 Filesif you find these attachements useful please consider making a small donation to the site
For 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 Filesif you find these attachements useful please consider making a small donation to the site
Last 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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This happened last Saturday and today I finally had time this morning before I went to work to replace two non brand capacitors
I will let you be the judge weather or not these are bad or not according to the blue ESR meter that I am using
I am comparing them to a brand new one that I installed
The display came back on and the programming was not lost which I was surprised by I would have thought that when the display went blank that so did the memory as well
I going to let it run for several days before I remount back on the wall next to the... -
My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
hi guys, i need your help again...i have tcl u65x9006. while i was watching it become darker like when a movie ends, little by little the image disappear. now if i turn on i have back light on, after like 1 min i have also sound but no picuture. the back light is on i take off one at time the ldvs but nothing change always no picture. i tried to cover with a piece of paper the pin of ldvs i cover like 7 8 pins but nothing worked. the tv stay with no picture. there is a tcon board.i checked the voltage there on the fuse i have 11,8 volts. there is caps in shorts on the exit of the tcon i have... -
Dell 5520 South peak 15 MB 213253-1 2TWTT$LA
Hi all, looking for some help to get started on troubleshooting without schematics
I have used Dell Latitude 5530 SouthPeak15 MLK 203102-1 schematics from forum although this board is a little bit different.
I am a bit lost on USBC PD circuit and what to measure - here is what i have done so far.- no coils are shorted - one is showing about 15ohms but others are in kohms or infinite resistance.
- most of the coils are showing 5V, 1.3V, 3V etc except 2 of them.
- i have measured 16.5V available at the capacitor
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Hello friends,
A yellow light was flashing on my monitor. It was like it was constantly cutting power. When I opened it up, I saw that the big capacitor in the high voltage line was leaking. I replaced it. When I turned it on for the first time, it had the same problem again. But then, interestingly, it got better. The yellow light was on steady. But the monitor wouldn't turn on. When I examined them with a thermal camera, I saw that the Fli5961-LF reached 50 degrees Celsius and the EM636165TS next to it reached 100 degrees Celsius and was drawing high current on the motherboard....11-13-2024, 07:00 AM
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