Re: Dell E178FPb - white screen
not even fit for the vip room.POOF!
not even fit for the vip room.POOF!
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Last edited by kc8adu; 05-25-2010, 05:01 AM. -
Re: Dell E178FPb - white screen
much nonsense snipped...Last edited by kc8adu; 05-25-2010, 05:03 AM.Comment
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Re: Dell E178FPb - white screen
Not funny and out of place.Originally posted by cjmclellen
You should try to breathe underwater, I guess it will solve the dumb posts you do ...There are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job
)
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Re: Dell E178FPb - white screen
Congratulations. You made it!Originally posted by cjmclellen
I apologize for not using my own picture. I guess your avatar is your real picture. At least it is brainless, so it might be related in some way .....Originally posted by cjmclellen
In fact it is. I apologize for thinking you are a complete idi... never mind, I guess you just got lucky on that one.Originally posted by cjmclellen
In your dreams.Originally posted by cjmclellen
Please post something either useful or at least funny. No, I'm sorry. You should not post at all. We all get along pretty well here.There are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job)
Comment
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Re: Dell E178FPb - white screen
problem fixed.
now back to the o.p's issue.Comment
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Re: Dell E178FPb - white screen
^
Wow, what got up his ass!
In the 7 years this forum has operated, that was the first non-spammer troll we've had to ban! Bring a tear to the eye!
Resume fellas, sorry for the interruption!
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Re: Dell E178FPb - white screen
Capxon GL is replace on sight (like fuhjyyu), white display problem and it being intermittent sounds like a flex cable issue or the Genesis controller not getting it's voltage (defective regulator on the controller board? usually one 3.3V and another one with 2.5V or 1.8V))
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Re: Dell E178FPb - white screen
That may not be so easy to resolve. By the symptoms, it's a bad solder joint. Given the extreme small size of the components, the lack of schematics, and even pin-outs of some of the ICs, this is NOT easy. And an honest question is "How much time and effort should be spent on a 17" monitor?" Unfortunately, my frugal upbringing won't allow me to discard it!!!Originally posted by kc8adu
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 E178FPb - white screen
No, if I haven't made it clear, let me correct that. The panel circuit board contains a set of power supplies which generate the voltages needed by the LCD panel. That supply is dead. At one point yesterday it WAS working and the test points showed voltages ranging from approximately + 25 volts to - 10 volts (using an oscilloscope). Before I could grab a DMM, the power supplies had failed again.Originally posted by Scenic
And before someone else says 'Fuse!' let me repeat - there is 5 volts present on the panel card at all times.
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 E178FPb - white screen
I have seen that before and yesterday I revisited my notes. I have three Hanns-G panels with that symptoms/problems. One, sadly, got broken while I was extracting the lamps to fix a Samsung (how, I don't know. I promise I was as careful as always...). The other two ad their lamps removed too, but I did not discard them. Someone here suggested that one of the DC-DC converters on the board in the panel itself was failing, but due to the fact that I have no electronics background, and I don't have (contrary to Bill, and others around here) a scope, I just left them stored.Originally posted by PlainBillThere are 10 kind of people in this world: those that understand binary, and those who don't.- ASUS ROG Maximus IX Code
- Intel Core i5-7600K 3.8GHz
- 16gb GSKILL TridentZ RGB DDR4-3200
- 1 M2 SSD + 2 WD Blue 1TB (Mirrored)
- Windows 10 Pro x64
- GeForce GT1050
2 x Acer KA240H + 1 Vewsonic VP2130 21 (a cap replacement job)
Comment
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Re: Dell E178FPb - white screen
I've seen pictures of other panel cards that had a single IC to generate the voltages. This one appears to use multiple ICs. I've been able to read the part numbers of a few of them. One does not appear to have a datasheet available. I was unable to match the part number of the other; probably a reading error on my part.Originally posted by eguevarae
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 E178FPb - white screen
PlainBill,
Any progress on this? I have an E178fpb and the boards don't match the physical description of yours. or the pictures. I can't tell anything that's wrong with the boards.Comment
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Re: Dell E178FPb - white screen
It's a slow process. I HAVE found a lighted magnifier so reading part numbers on ICs is now possible. Unfortunately, the numbers I come up with don't generate hits with Google. The input to the inductor is a steady 5V DC,obviously it should be switched on and off. The next step is to try to trace it back to the driver.Originally posted by alexanderjohn
I had considered the 'poke and prod' approach on the assumption it was a bad solder joint. However, that seems dubious when it would involve shorting IC pins together....
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 E178FPb - white screen
Good news / bad news on this monitor. My wife teaches computer skills in a Middle School. One of the modules is base on the Lego Mindstorm robotics system. The NXT controllers are unreliable, the problem is often poor solder joints on the display assembly. Currently I have half a dozen of them in a box waiting for repair. Sadly, my venerable Ungar 27 watt soldering iron just isn't up to the task - the tip is too big. So yesterday I went down to Frys and picked up a Weller SP12. That worked much better, and I was able to cope with SMD devices.
Next, I pulled this monitor off the shelf and began touching up the components in the power supply area of the tcon. I hit paydirt when several resistors moved when I touched one end with the soldering iron (obviously the other end was not soldered). The display panel now works perfectly.
Unfortunately, I have misplaced the screws that hold everything together.
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 E178FPb - white screen
LOL Congrats, I Like it when you find the problem!
Do you think the solder joint cracked from heat?
BTW, I wish I could get a hold of some of those NXT controllers!Comment
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Re: Dell E178FPb - white screen
I have one Dell E178FPc. When I power one the Monitor it shows the Full Screen Test pattern like images. It doesn't get affected with or without VGA cable connectivityComment
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Re: Dell E178FPb - white screen
Plainbill I had a heap of smd transistors on a kenwood head unit for the car do this, it took out the lcd display.
obviously sometimes the conditions in the room these are manufactured changes.
cause I have this other head unit the same and it never done.Comment
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Hi all!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
As per subject, on power up display shows no image, but white
flickering screen. Strangely, it only happen after power was lost
when it was on. After power returns - white screen only, but if
disconnect power for 12-24 hrs, and connect then again monitor
works normally.
Any clues how to go about it would be greatly appreciated. -
i have DELL INSIPRON 14 5410 2-IN-1 blinking orange and white when charger connected, i tried to find Boardview or schematics but cannot find. i opened the unit and the motherboard model number is 203071-1 Watchmen that i found written on motherboard. Where should i start because when i press power on, nothing happens. but i checked the main power rails voltages are enabled and the charging for battery LDO is 3.3 volts.
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Dell G15 5510 Power on no screen. No cpu heat.
Motherboard number gdl55 la-k661p
I don't see any short on cpu power mosfets. If i inject 1v to cpu side draws 0.5 A.
When i plug the charger it starts atuomaticly and only gpu and hm heats up. (nothing too hot.)
Anything i am missing ?12-14-2024, 02:56 AM -
I picked one of these monitors out of the trash at work, it looked a bit dusty, but newish, and the screen wasn't gouged or cracked as far as I could tell, always a good start.
Brought it inside and found that the screen was pure white when switched on. Pressing buttons seemed to make the brightness a little dimmer (menu screen popping up?) and pressing other buttons made the backlight go off for a second or two, and then come back on again (input switching?).
I did a quick google on the model, but no threads or pages with any issues for this model coming up. It's a relatively...01-05-2022, 09:38 AM
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