Since nobody reply me, i figure out how to make the connections without burn the board controller. This is for those who face the same problem in the future. VIN + EAN connected on +12v || DIM connected to the pin 2 of the potentiometer, pin 1 of the potentiometer to GND, pin 3 to 5VDC supply. I used a 5k POT.
+Pieh0 Definitely I would change it for a Panasonic 105ºC, their cost is still low but their quality is much better. To fix expensive instrument, it is always good to use good quality items
I haven't been able to find any information about the boards and how exactly to connect the dimming. Does anyone have any information? Which pot to use and how it is meant to be connected?
Thx dude! I replaced the light and it only cost 12€... the company here wanted to do this repair for 500€ so I ordered the light from China ( eBay ). It is very easy to check if the backlight is broken... just hold or press a flashlight on the screen. If you can see something, than just replace the light.
Did you use a potentiometer to drop the brightness? any tips for the rest of us? Are the yellow wires for brightness control and if so how do they work?
@@scottvance74 I just ordered an original backlight and installed it. So no wiring needed. You don’t even need an potentiometer. If you want to replace it with a LED than I’d suggest just trying some resistors. So directly wiring it to the factory cables with nothing between it. This should work right?
@@B58B30 The available parts I'm seeing have a series/parallel network and require about 8V to drive them. The inverters that do this are usually powered by a 12V source. My output (to drive the old CCFL) is 5V. I found that most of these have a diming function, so by either using that and/or changing the current sense resistor on the LED driving board, I think that I can solve the issue. Thanks for your feedback.
Why would you ever do that? CCFL if safer for your eyes. I would prefer the video other way arround. Is it possible to put CCFL instead of LED on modern monitors?
Lol. That’s like saying “I want to rip this modern fuel injection system off of my BMW and install a carburetor with loads of vacuum lines in its place.”
I didn't knew about your channel until i saw the recent talk of you with dave from eevblog, i am a long term viewer from his channel, i kind of like this short videos!, i'm gonna look one of your long ones, usually depends on what you wanna show, both are interesting! there are subjects that needs a lot of time, others like this one, not, nice instrument btw oh my god!
Thanks for the great video! I recently bought the same 27 inch led strips with that DF6113 driver and 15N10L mosfet but it never produced enough backlight light on a HP 25 inch TV. Which was because the strips had turned in their holders inside my TV. Which was fixed by gluing them to the white plastic top and bottom reflectors. The driver module board I received had no second e-cap and was REV:03. I wouldn't advice anyone to use this board above 12V because my board became very hot instantly and after 10 minutes or so it short circuited and got up in smoke. Both my led strips luckily were intact! But it resulted in a defect mosfet, SS210 diode, and R620 plus 1R00 components. And likely also the DF6113 is gone now! I examined the driver module circuit and noticed that it has NO OVP protection and neither a decent over-current protection because it is not equal to the original datasheet of the DF6113 that clearly shows these installed! I wouldn't buy this board or these led strips as REV:03. The video showed REV:02 with second e-cap installed!
Neat! -it's now 2024 and I stumbled on this vid looking for changing CFL to LED - I found a 12.1" 'picture frame' at a thrift store... after taking it apart, I determined the operating voltage, and plugged in an adapter with the right polarity... the screen is a TFT with a CFL backlight, that has no output voltage on the CFL converter. Using a flashlight I can see the screen is operating, so here I am looking at CFL to LED conversions... For test equipment, this is a great way to revive gear, for a display screen, I'm now curious what temperature LED is going to work if I replace the CFL tube... have fun being techs peeps!
+The Signal Path Blog since it is a constant current driver, reducing the number of LEDs connected will cause the current through each LED to go way above the rated one, which would explain the significant blue shift of the light. I would increase the sense resistor by at least a factor of 4, and then use the dim input to fine tune.
Can I upgrade with HP DV 6700 laptop LCD screen to upgrade CCFL to LED I have HP DV 6700 series laptop LCD made by AIO brand very thin LCD 14.4 inch thickness of lcd is 5 mm ??
Definitely, if you want to use them at full power you need to provide some heatsink, otherwise they start blackening soon. I would not use it at more than half of the rated power. It was really a pleasant surprise to see that there were no "hot spots" of light due to LEDs, that is what always makes me afraid of doing this (unless alternative is no-light, of course) Thanks for the video!
Hey, what kind of input does that brightness control need? I want to repair a 1993 Apple PowerBook with a dead ccfl tube and the sharp display looks similar to yours. I guess it's original brightness control is some kind of variable resistor, so maybe I could wire this up instead of the Potentiometer you used and keep the original brightness slider functional.
And what about replacing the backlight with some reflective material so the LCD works with the ambient light. Like the Sun Vision Displays ... is that possible? using somekind of reflective sheet like Mylar or paint a sheet with "white 2.0" paint. (Also removing the top filter of the LCD.)
Please Please Can you give me the shematics?!?! Or otherwised the wire conections for the potenciometer?? Should be 5k or 10k potenciometer?? Please some help! Great video by the way!
Hello so after a long time I have seen the video and now I'm trying to make that one panel but after research I come to know my lcd display has cclf backlight and it has inverter so now how can I glow that beautiful lights any ideas i don't know how can I do with this.
Hi sir.i have a 14" lcd screen. Is it possible to connect it by raspberry pi? Other wise give me a solution to convert it in to tv. Iam waiting for your reply
I really like the short series also. So please continue with the mix of them. Excellent job at retrofitting the LED unit into the system in the time allowed for the short system. Also liked the "partner" in the beginning of the video. Well doon and thumbs up.
Hello there, I have a imac display lm215wf3-sla1 which has already LED backlight and I can't find any driver board or I should say inverter board , please help me out
You need to know the configuration of the LED board so you can determine the required voltage. You will then need an LED driver board with constant current capability to do the job.
I have to do something like this on a very tiny, TFT 2.8" touch display. It had LEDs, but super tiny SMD with their own adorable little rim to direct the light. LOL Long story short, this TFT display was in use in a "Humidifier" project that I build a couple of years back. I accidentally messed it up by putting vinegar in the water to keep fungus down (inside the humidifier) and when the fan was on full, there was a very fine mist coming out of the front. Sadly, this mist got into the display between the reflective layers! Today, I tried to clean all that up and actually got the layers apart, but 2 of the 4 tiny LEDs fell off due to the vinegar also corroding the PCB in that area. So now, it looks like I'll have to make a back light, using tiny "cob" LEDs that will run on 5V or less. Fun times.... sigh
Please do more of these types of videos. I don't always have time to watch a 70 min RU-vid video. Plus going over some of these basic things is also sometimes interesting.
YAY short videos. I like that very much! More shorties please!!! The common RU-vidrs attention span is not 1 hr long ;) Just kidding, but for a fact I have to watch the 1hr videos in several chunks, there rarely enough time to watch those from start to end. Sometimes you could even make "one-takers" with no editing at all.
Oh I forgot: That's a very nice retrofit. Works much better than I'd ever thought. However I won't trust those capacitors on the LED inverter at all and replace them just as a precaution.
Good job, I liked it, could have been a little shorter (not complaining just giving feed back) I gave you a thumbs up. As always thank you you're a good egg.
Hey, stupid question but I was wondering if the Mercury inside a tube could leak out of the monitor. My image has been flickering there's some ghosting issues. Btw could LCD fluid leak out of a monitor without visible damage?
Last time I had LCD monitor with CCFL backlight and every component was fine but by some reason CCFL driver was shutting down after 1second, adding 10pF/1kV capacitor in parallel with CCFL tube fixed it.
I like the new short video. Of course, your long videos are great, but sometimes I want to watch an entire video and don't have an hour. (Playback at 1.25x or 1.5x on a PC is also a great way to watch more videos in less time.) That screen turned out very nicely, indeed! Thanks for sharing.
Thanks again I have a Tektronix 1503 TDR and it uses [ if my memory is close ] a elector - luminescent screen , with it used florescent tubes , then I could do this upgrade .
The Signal Path Blog, Where did you find the led kit? I looked on eBay and of course some are available, but not sure what ones can be cut like you did.
Hello Now you have this amazing network analyzer I was wondering if you could do a video on how to use such a amazing device, and perhaps how you read a smiths graph as I always struggle with those!
First time watching your channel. Very well done. Good video and sound, excellent tech work. I would have appreciated an expansion of explanation on the variable resistor, its values and wiring. Otherwise great, thanks
Good choice for subject. There is quite a lot of test equipment needing display CCFL replaced. The short video format is a good idea but don't neglect the longer more in depth videos - you great job producing videos and spreading knowledge. Thanks
I like this short video, but please continue doing the long ones. Good results with the backlight!! Did you find a way to stay more time in the lab, bringing your girlfriend/wife there? :)
An Engineer that fixes things thats pretty cool. We hired some retired engineers to help out in our repair business, I found them fun to work with, they like to re-design things.
Nice short video, like some sort of behind scenes of things you also do. Would be nice if you add the source of the drive and strip. Also how did you "glued" the strip to the panel? Nice to also know those details.
The "quickies" are definitely interesting as well and worth to be continued, as long as the explanations of your solutions are still understandable. I always enjoy your vids, no matter how long they are..
Nice little video and a nice result too. It seems your girl friend wants in on the act. You have said she is camera shy so ease her into it gently...... :)
Of all the videos on youtube I look forward to yours the most, and these shorts would be a welcome addition. Thanks to you I'm contemplating switching from a digital to a more analog oriented EE degree ;)
Yep, great to mix both short and long videos. Longer videos are not as likely to be watched and/or saved for later. It might take me a week to watch an hour long video in small sections ...
