My question....
Are the LED's under the capacitive buttons controlled by individual drivers or is it one driver for all 4 LED's. Also is the driver(s) replaced when I flash a new ROM and Kernel?
My reason.....
I got a replacement Rezound, and the phone is flawless other than 1 LED. All the buttons are nice, bright, and red, but the home button is barely lit up. Very dim. When I use the dim LED script the home button basically turns off.
I don't wanna deal with getting another that may have real problem, when this is just more of an annoyance. My Dad is the boss at a factory that builds computer electronics for all kind of crazy stuff, and said he could have someone replace them properly. I've ordered red 0603 SMD LED's to replace them all. My only concern is he mentioned it could be a bad driver for that LED, and make all the replacing pointless. So if they are all controlled by a single driver it would be a bad LED.
Or do I just not know what the hell I'm talking about?
EDIT: This should be in Q&A. Mods please move.
Honestly, I don't know but I suspect it is just an individual LED. Not on a computer right now but there is a thread on this forum with high res pics showing the LED color mod that might help make the process easier.
Sent from my ADR6425LVW using Tapatalk 2
I did see that thread. That's where I got the red LED idea, but his problem was pink buttons not really a possible burn out, or other issue. I could deal with them being pink if they lit properly.
probably a mis-aligned attachment on the pcb, or a bad led altogether.. if you want to take it apart you can probably replace the individual led, but you'll need some soldering expertise.
That's also what he thought bad connection. They have plenty of experience at his work, and all the right equipment. So I'm gonna send it there. I wanted to make sure there wasn't an individual driver for just that led before I wasted his employee or companies time.
Yes, sound like bad hardware for sure...good luck!
Related
Since I knew everyone would think I lost my mind, I verified this for weeks before posting it...so here it goes!
When I charge the device at work (with the power on), it sits on my desk about 16 inches under my overhead cabinet that has fluorescent lights underneath. The lights somehow triggers screen actions on my HD2! It's the strangest thing I've ever seen! After about 30 seconds, the device looks like a ghost is randomly tapping the screen, randomly starting programs!
This NEVER EVER happens in any other condition--outside under sunlight or while the device is on any other surface where the fluorescent light is higher up, like on the ceiling. I have no problems with using the device otherwise.
It's just strange and I'm wondering if anyone else has ever seen this...
hmm interesting.
Might there be power running up inside the wall near the phone too? PC and monitior around it?
could be patches of field building up just enough to fool the capacitive screen, or maybe exciting the grease on teh screen or some such.
Course there has been a lot of talk about ghost taps, is it really only ever happening there?
Could be you need to change the starter plug in the fluorescent, if its a standard strip, they can hold quite a charge, and if its on its way out it could be losing charge to the air.
Especially when you look at how many electrical items we have on/near our desks, easy to build up a standing charge.
samsamuel said:
hmm interesting...Could be you need to change the starter plug in the fluorescent, if its a standard strip, they can hold quite a charge...QUOTE]
Someone also mentioned the fact that the flicker on my fluorescent desk lamp could be the cause. I saw a video where someone was able to "tap" their capacitive screen using beams of light, lasers, etc.
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Click to collapse
I've seen LED power indicator mentioned in a few reviews, but couldn't find it on photos. And I don't have Prime yet, only original TF.
So, is there really a power indicator on the power button on the tablet itself?
Also, if it IS there, I have a suggestion. There's an app Missed Message Flasher on market, which flashes LED or hardware button highlight on my phone (which don't have LED) when you got a new notification. Why don't someone make similar app for TF Prime? So with any new notifications it would flash even if screen is off.
I've found myself pressing power button just to check if I got a new messages in IM or a new email quite a lot during everyday use. Would be very useful just to look on the tablet and see if anything require my attention (new notifications) by flashing LED. Hope it's not too dim for that purpose, and power consumption should be miniscule. Yeah I know it's playing a sound when I got something new, but this isn't so convenient and I could be absent at the time when new message appears. Flashing or pulsating LED would be quiet and nice.
Maybe not as app, but as a part of custom ROM - I suspect this functionality would require root.
Because it's in such a weird place you would never check to see the color of the light
Sent from my Transformer Prime TF201 using Tapatalk
tixed said:
I've seen LED power indicator mentioned in a few reviews, but couldn't find it on photos. And I don't have Prime yet, only original TF.
So, is there really a power indicator on the power button on the tablet itself?
Also, if it IS there, I have a suggestion. There's an app Missed Message Flasher on market, which flashes LED or hardware button highlight on my phone (which don't have LED) when you got a new notification. Why don't someone make similar app for TF Prime? So with any new notifications it would flash even if screen is off.
I've found myself pressing power button just to check if I got a new messages in IM or a new email quite a lot during everyday use. Would be very useful just to look on the tablet and see if anything require my attention (new notifications) by flashing LED. Hope it's not too dim for that purpose, and power consumption should be miniscule. Yeah I know it's playing a sound when I got something new, but this isn't so convenient and I could be absent at the time when new message appears. Flashing or pulsating LED would be quiet and nice.
Maybe not as app, but as a part of custom ROM - I suspect this functionality would require root.
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Click to collapse
edit: Ninja'd again lol
Its so small and located in such a way you would have to be looking directly at, its probably not worth it.
Well, in very bright conditions - yes... But in not-so-bright-usual-geek-dungeon even blinking reflection on the table or wall is enough. Again, I don't (yet) have one to test the brightness myself, so this is only a speculation
tixed said:
Well, in very bright conditions - yes... But in not-so-bright-usual-geek-dungeon even blinking reflection on the table or wall is enough. Again, I don't (yet) have one to test the brightness myself, so this is only a speculation
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Click to collapse
Personally, if I am in the same room as the TP, its in my hands anyway lol.
Not worth it
tixed said:
Well, in very bright conditions - yes... But in not-so-bright-usual-geek-dungeon even blinking reflection on the table or wall is enough. Again, I don't (yet) have one to test the brightness myself, so this is only a speculation
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As others have said, the light is too small, and in a place that the odds of having it in your line of sight would be minimal. You would only have a 25% chance that the top edge of the unit would be in line of sight. Good idea, really, but it plain wouldn't work well enough to be worth it.
BTW, it IS on the power button itself, which leads ME to a question. How is everyone's power button? Mine is stiff as a day old dead dog, and I find myself squashing, pushing, pushing again to get the unit out of sleep mode. My OG Transformers (all 3 of them, have a nice springy detent of perhaps 1/32" - 1/64" (damn America for never adapting the Metric System! I don't know my milimeters from my water meter) The new button is just a mush,, with no noticeable travel)
Ive seen something that ll make a little envelope bounce around on your screen,
though im not sure how battery intense this is (then again this thing has a mamoth batterylife so I wouldnt care!)
This is one reason I still sport my Nexus One which is my main messaging device. I love the RGB glowing trackball which my co-workers all call the glowing eye of mordor.
Not sure why this feature is so overlooked. I guess as more feature phone users upgrade they don't know what they are missing.
SmartAs$Phone said:
As others have said, the light is too small, and in a place that the odds of having it in your line of sight would be minimal. You would only have a 25% chance that the top edge of the unit would be in line of sight. Good idea, really, but it plain wouldn't work well enough to be worth it.
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Click to collapse
Okay then Well, at least it's clear that it _does_ have LED power indicator. Too bad that new button is stiff also. Not a deal-breaker, ofc, but I'd be pressing it quite a lot during use.
Wordlywisewiz said:
Because it's in such a weird place you would never check to see the color of the light
Sent from my Transformer Prime TF201 using Tapatalk
Click to expand...
Click to collapse
However, once you get a keyboard dock it may be more visible when in the closed position
Wordlywisewiz said:
Because it's in such a weird place you would never check to see the color of the light
Sent from my Transformer Prime TF201 using Tapatalk
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Click to collapse
^^ this. It is tiny and only in the dark could you see it and only if the tablet has it's edge turned towards you. In reality, it is 100% worthless and I am surprised it is even there.
Hi
Just got home with my Note 2 and have been loving it except for a possible issue with my LED light. When charging and the screen goes off, the red LED comes on which is good, the issue is that it is very dim. The odd thing is that when I power the device off and leave it charging, the LED indicator then turns bright red like it is usually supposed to be(like it is on my S3). I was just wondering if someone could power off their device while charging and tell me if the red charging LED is brighter than when your device is powered off than when when it's powered on.
One other issue is I tried to charge the Note 2 using one of the many Android charging cables I have laying around and when I use anything other than the charger supplied in the box, I get an intermittent tone and the device will not allow me to turn the screen off.
Would be much appreciated if someone can test these two possible issues and let me know if theirs does it too or if it's just mine.
Thanks for your time!!
I believe the led light is sensitive to light, meaning it will be dimmer in a darker area and lighter in a lighter area.
Sent from my SCH-I535
lambo172 said:
I believe the led light is sensitive to light, meaning it will be dimmer in a darker area and lighter in a lighter area.
Sent from my SCH-I535
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That was it bro, thank you!! I was doing all of this is a dim environment and after reading your post I grabbed a flashlight and shined it at the front of the Note 2 and at first no change....but then all of a sudden it switched to the bright red LED. Big time thanks man I was not wanting to have to go back to the store and exchange again. I already had to exchange the first of for what was either a stuck pixel or dust under the screen. This one the screen is perfect so I want to keep it.
Can you or anyone else test a random charger for me and see how the Note 2 reacts. Wondering if this thing needs to be used with the supplied charger to not make this sound and the screen staying on. The odd thing is I just tried my Nexus 7 charger and it works without issue but all my other chargers act wonky with the Note 2. Again man thank you for your time to post it helped me out big time
Old MuckenMire said:
That was it bro, thank you!! I was doing all of this is a dim environment and after reading your post I grabbed a flashlight and shined it at the front of the Note 2 and at first no change....but then all of a sudden it switched to the bright red LED. Big time thanks man I was not wanting to have to go back to the store and exchange again. I already had to exchange the first of for what was either a stuck pixel or dust under the screen. This one the screen is perfect so I want to keep it.
Can you or anyone else test a random charger for me and see how the Note 2 reacts. Wondering if this thing needs to be used with the supplied charger to not make this sound and the screen staying on. The odd thing is I just tried my Nexus 7 charger and it works without issue but all my other chargers act wonky with the Note 2. Again man thank you for your time to post it helped me out big time
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Click to collapse
Used my gnex charger and supplied one and both work fine
Hi Guys and Gals,
I have a question and I am hoping someone with some electrical/software knowledge can chime in and help me out.
I have an RK3066 based android Mercedes Double din unit and the RED LED from the RGB will not work. Blue and Green work fine it is only Red that does not work.
It used to work fine and then all of a sudden I enter the car one day and it's green, (I use a green and red mix to create orange which is the default Mercedes color)
Yesterday it magicall started working again after having not worked for 2 weeks and today it is gone again.
Green slider works
Blue slider works
Red slider makes no color changes and if green and blue are all the way down and red is all the way up the lights are off.
Can this be a resistor or it it software based, I know the kernel can control the LEDs and so on but I am leaning towards hardware related. Maybe a broken SMD resistor these Chinese units are so poorly designed.
Anyways if anyone has some info, it will be greatly appreciated.
God Bless
Same thing here....blue and green work but not red. Stopped working...came back...then went out again. It started after updating in march. I had an older version and wanted the standby timer. RK3066 800x480 KLD unit. I've tried reverting the mcu. Switched to the newest mcu. Reflashed rom. Which actually controls the rgb's?
So far from what I can tell is that the GPIO pin goes to the led resistor then to the led itself and I believe it is controlled via a voltage difference. for example 3v red 3.15 blue, 3.25 green (not actual figures)
What is confusing is that it came back for me then went out again, the dash is extremely hard to pull apart for the Mercedes, not to mention I have a full blown system in here and will have to remove quite a bit of product before getting to the headunit. I was hoping someone with higher software and hardware knowledge would chime in, but it seems like we are on our own. A lot of people on these boards will says "open it and try on your own" I am not sure but I believe that it is 1 resistor for all three colors, unless it is 3 individul leds which would require 3 resistors.
Mine also went out in March (I made no Rom or MCU changes prior to it going out) which is odd then it came back in april, can some software based date cause it to not functions? or can it be that just the red led is failing (defective).
I doubt that it is a resistor since the other two colors work fine and from what i suspect it should be 1 led (RGB) and 1 resistor for the (RGB) led.
Hopefully someone will let us know if there is a remote possiblity that it could be software based, if I was 100% certain that it is hardware based I will and would have already pulled out the unit.
Sounds to me like an intermittent hardware issue - a bad connection somewhere. More likely to be on a connector than a bad PC board trace or cold solder joint.
mike.s said:
Sounds to me like an intermittent hardware issue - a bad connection somewhere. More likely to be on a connector than a bad PC board trace or cold solder joint.
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Do you know if the unit is individual LEDs or is it one rgb led
If it is one led then it should have 1 resistor per led and in which case none of the colors should work.
Could it possibly be kernel based or the rk3088 board/chip itself?
I will pull mine out tuesday night and take a look at the leds to see what the are and get some pics. I ordered a rk3188 SoM and will also be changing over to that rom.
Awesome, please keep me posted. I'm gonna try a few things software wise.
Well I opened it up and almost didn't get it working again. The rgb leds have four legs ground and power for each of the color. My camera sucks so no pics but when changing colors in the elements screen if I select red the blue leds light up. Selecting green does green. Selecting blue goes dark. So I'm really thinking that it's software related.
dazedfive said:
Well I opened it up and almost didn't get it working again. The rgb leds have four legs ground and power for each of the color. My camera sucks so no pics but when changing colors in the elements screen if I select red the blue leds light up. Selecting green does green. Selecting blue goes dark. So I'm really thinking that it's software related.
Click to expand...
Click to collapse
That happens if you have MCU 2.55 with the sound enhancement MCU version 2.22 works correctly.
if your headunit is still open, is there anyway you can send me the picture of the board and resistors, even if it a horrible picture, its still better than nothing
thanks
Sorry didn't save them. There weren't resistors next to each led but there was a group of them on the other side of each board so a bit of tracing would need to be done to track each one down. For the mcu my unit is KLD and i've tried every version listed here http://forum.xda-developers.com/showpost.php?p=61291848&postcount=14139 and none changed the way the elements act
It's probably already known by everyone that this phone packs an RG notification light (damn you, ZTE!) What's more, blinking seems to be fixed to solid and slow blinking, and it can only display RED , ORANGE and GREEN.
But, at least on ResurrectionRemix, there seems to be a way to turn on the two LEDs that we actually have with the console, and with a desired brightness:
su
echo 255 >/sys/class/leds/red/brightness
255 is the maximum brightness, but it ranges from 0 to 255.
Also, we can do a very nice shade of yellow using:
echo 255 >/sys/class/leds/green/brightness
echo 64 >/sys/class/leds/red/brightness
There are also a bunch of other parameters inside, but brightness is the only one I tested so far. I think we could use this to control the LEDs via a root-enabled app like LightFlow. Is it possible? It would improve a lot the LED quality.
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
XblackdemonX said:
Yellow would be nice. Maybe if you contact the Appflow dev he could make it work. However i'm not sure I want to install an app just to add 1 color
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not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and green led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
Choose an username... said:
not just colors, in theory... Blinking speed is theoretically changeable, but it is somehow hard-coded and only blinks slowly for some reason. I'm not even sure if it can be just solid when triggered by a notification
There are a bunch of files inside the red and blue led folders, and I guess they are what controls the LEDs flashing speed and all. I say "guess" because maybe they are simply ignored and the blinking speed is hard-coded. But whatever the case is, it seems possible to at least turn the LEDs on via shell scripts
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Click to collapse
Files inside the folder:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
KwesiJnr said:
I found it extremely disappointing that ZTE gave us only RG lights on the non-Chinese version (I heard the Chinese version has RGB?). For diodes so cheap, I am only led to believe it must have been a manufacturing error on their part. Don't get me wrong, we get more than enough for the price and specs of this beast of a device, but how hard could it be to get RGB LEDs on this device? I really miss multicolour notification lights. This green-red-orange thing gets boring rather quickly.
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I really miss the RGB led too. I never know when my notification is important or not.
XblackdemonX said:
I really miss the RGB led too. I never know when my notification is important or not.
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Click to collapse
Yeah, bro. Coming from a One M8 with the same RG lights (used for about 2 years, previously a Nexus 5 which was RGB), you would understand