I picked up a Dell 2007 FPb from someone else. Its symptom is after power on (press the on/off button), the initial Dell logo animation just shows up for less than half second and then black screen. The power led stay green and with flashlight at 45 degree I can't see any image. After reading a few threads about this monitor, I guess it is somewhere on the inverter board but could find any obvious defect part. So I took pictures for all the four boards and try to see whether expert here can give me some suggestion. Thanks a lot.
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Dell 2007FPb cannot stay on
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Re: Dell 2007FPb cannot stay on
In the last picture there is a small yellow torpedo fuse - test it. Should be ok as you do get a flash. Next test the secondary windings on the 3 transformers on that same board.Please upload pictures using attachment function when ask for help on the repair
http://www.badcaps.net/forum/showthread.php?t=39740
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Re: Dell 2007FPb cannot stay on
https://www.badcaps.net/forum/showth...fpb#post335335
Check the inverter transformer secondary side resistance.
If you search the '2007fpb', you will get lots of threads.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Dell 2007FPb cannot stay on
I did checking according to the post:
https://www.badcaps.net/forum/showth...pb+transformer
The resistence between 5 and 6 is out of my multimeter reading range for all the three transformers, between 7 and 8 is something around 9 Milliion om for all three of the them. When I hook up all the four boards together and plug in the the inverter connector in to A,B,C,D separately, I could not see the screen was lit up after turn on the power. How to see the "lamp flash briefly"?
Thanks.
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Re: Dell 2007FPb cannot stay on
Pin 8 and the bottom pin where the dot is that is one high voltage winding for the left side of the transformer, pin 5 and the bottom right pin is for another winding, it should be around 1000 Ohms.
Same pin out as this one:
http://s807.photobucket.com/user/bud...tml?sort=3&o=2Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Dell 2007FPb cannot stay on
Originally posted by gengtian View PostI checked the resistence, all six pairs are about 1060 ohms except the right most (ie the pair for the pin 5 as labelled) is 1389 ohms. Do you think this reading ok?Last edited by retiredcaps; 05-09-2013, 10:28 PM.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: Dell 2007FPb cannot stay on
2nd that.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Re: Dell 2007FPb cannot stay on
I don't see any replacement parts for a 4001R on ebay or http://lcdparts.net/T.aspx.Last edited by retiredcaps; 05-09-2013, 11:59 PM.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: Dell 2007FPb cannot stay on
BTW, everything you have described and tested is in the FAQ "2 seconds to black" starting with post #19 (latest revision).
https://www.badcaps.net/forum/showthread.php?t=10419--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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Re: Dell 2007FPb cannot stay on
I forgot that an USA member might also have the 4001R transformer from a repair gone bad. If you are interested, I can send him an email to see if he still has one and put you two in contact?Last edited by retiredcaps; 05-09-2013, 11:59 PM.--- begin sig file ---
If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.
We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.
Please do not post inline and offsite as they slow down the loading of pages.
--- end sig file ---
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