Re: Dell E153FPB Back Light problem
Anyone having issues with this model should try adjusting the pot on the back of the panel. All fuses, caps, xr's all tested good for me so I tried adjusting the pot and sure enough I went from a screen that would turn on for a moment then go black to a monitor with a screen that stays on. Remember small turns on the pot and I recommend doing it while powered up so you can see changes live.
Dell E153FPB Back Light problem
Collapse
X
-
Re: Dell E153FPB Back Light problem
Just wanted to say that everything is still working fine since the fix. Thanks again for the support!Leave a comment:
-
Re: Dell E153FPB Back Light problem
thanks for this post i tried it and it worksLeave a comment:
-
-
Re: Dell E153FPB Back Light problem
can i replace fu9024n with c5707'sLeave a comment:
-
Re: Dell E153FPB Back Light problem
Ahhh - finally I've found the problem!!!!
After a lot of trial and error I have the CCFL lamps back on!
I won't keep you in suspense any longer... The problem was a blown fuse!
No... not the big white one, it was a little black one labeled PF751 (see previously posted photo if you're interested - it's on the right side and looks more like a rectifier diode).
I can read the letters "MS 2A" on it - so I guess that means that it's a 2 amp fuse. Someone else posted a schematic for a similar Diamond View monitor, which shows a 3 amp fuse. (ref: Inverter Schematic )
I've jumpered the fuse with an extremely fine strand of wire, and the CCFL now comes on. I'm giving it a burn-in-test right now. So far 1/2 hour and all is well.
I am, however, not willing to call it "fixed" yet - after all... Why did the fuse blow in the first place?
Sure... I plan on putting in a proper fuse, but I don't want to re-assemble it and have it blow another fuse (or worse) in a day or two.
But hey... after way too many hours on this project - at least I've got something positive!
Any thoughts?
i was thinking about buy another monitorLeave a comment:
-
-
Re: Dell E153FPB Back Light problem
Well I hate to admit this but I guess it will be good for the forum. The problem was the cable. I tried a brand new one and it works fine now. I tried the old one on another set up and it is fine too. I guess this monitor is just a little more sensitive than others. (and I have two "bad" cables).
Thanks for all your help.Leave a comment:
-
Re: Dell E153FPB Back Light problem
That reminds me of another thread. Try to get a quality thick shielded cable. One person has those cheap thin cables and when he replaced it, the problem went away. Unfortunately, I don't remember which thread it was or what the original symptoms were.Leave a comment:
-
Re: Dell E153FPB Back Light problem
I'll try another cable. I'll grab a new one from work. Maybe I have two bad ones and my other source isn't as sensative. I'll take a better picture of the molecular connector later.Leave a comment:
-
-
Re: Dell E153FPB Back Light problem
Is that (4th) pin, the yellow one, supposed to be 0v?Leave a comment:
-
-
Re: Dell E153FPB Back Light problem
Okay, I got the measurements. I apologize. I didn't mean for it to that long, something came up.
Anyways the numbers on the chips are:
AIC 1084-33CM 584G3 (larger one) PDF Datasheet
BS18532G3 (smaller one) Maybe the end is 63? I couldn't find any information on this chip.
The first chip, (1084-33CM)
0v --- GND
3.26v --- Vout
4.69 --- Vin
The second, (BS18532G3)
0v ---
1.77v ---
3.24v ---
I think these are okay after looking at the datasheet.
Here is the molex connector coming from the PSU board to the video board.
Starting with the yellow pin at the (top)
Y-2.97
Y-2.89
Y-11.66
Y-0 ???
Y-5.05
R-0
I checked these measurements twice, and with a second meter. They are within .01v. The voltages didn't change when the monitor is more blurry than times when it is not.Leave a comment:
-
Re: Dell E153FPB Back Light problem
There are 2 voltage regulators on the main/logic board.
1) List the part numbers off the chip.
2) With your multimeter, measure the DC voltage of each pin with respect to ground.
3) When the problem occurs, re-measure the DC voltage on each pin.
4) When the problem occurs, also measure the DC voltage of each connector pin between the power and logic board (yellow/red cable).
We are looking for any fluctuation in DC voltage to see if this is causing the monitor to flicker.Last edited by retiredcaps; 01-16-2012, 05:52 PM.Leave a comment:
-
-
Re: Dell E153FPB Back Light problem
Take it apart and post some pictures following the instructions in my sig file (earlier post).Leave a comment:
-
Re: Dell E153FPB Back Light problem
Also, When I hit the menu, the display stops flickering for the 2 seconds it takes for the menu to come up, then continues.Leave a comment:
-
Re: Dell E153FPB Back Light problem
Okay, I tried that and it didn't work. I also tried a different cable and source. It has come to my attention that the longer the monitor is on, the worse it gets. It changes from blurry to lines running horizontally flickering up and down the monitor. I tried to take a picture but that did not do any justice.Leave a comment:
Related Topics
Collapse
-
by sam_sam_samThis 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... -
by multimesutHello 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....1 Photo-
Channel: Troubleshooting Computer Displays
11-13-2024, 07:00 AM -
-
by boyebaranhi to all
tv turn on and show logo(backlight on)than backlight turn off than red led in front blinking 7 time. the tv remote control working fine (sound on no picture).backlight changed same problem
in 65k560 how to remove protection of backlight? picture of inverter and sockets attached .
please advise me tnx4 Photos05-20-2025, 07:11 AM -
by SDNarciaHello, I have a Dell 15R-5521, with the problem that the Ctrl, Alt, Shitf and Num Lock keys do not work, I tested the keyboard with a keyboard tester and it is functional, I also got another new keyboard and the computer has the same problem with the same keys. Check continuity between the ZIF connector from the keyboard to the KBC and all pins are correct. I cleaned the ZIF connector and the KBC and I still have the same problem. I reinstalled windows just in case, and it didn't work. I updated the BIOS to the latest version A16 and there were no changes.
As additional information,... -
by Achille15Hello everyone,
so, I have this laptop Dell Inspiron N5110 with a heating problem on both CPU (I7-2680qm) and GPU (GT 525m), I tried many solutions, like changing thermal paste every month, using thermal pads on CPU and GPU, even using thermal pads on CPU nearby coils; but nothing worked, just minutes after booting the laptop shuts itself down so I thought it might be a short problem, so I decided to check what's going on, so I went online and some tutorial (general one) said to check inductors in order to find the shorted circuit, after checking (CPU removed), I found the culprit to be... - Loading...
- No more items.
Leave a comment: