Is there any way to increase LCD brightness?
I put a cheap Chinese replacement LCD from eBay in my Dash and it's not very bright. Its bright mode is only as bright as my SDA's half-brightness mode. I don't have a Dash with OEM LCD to compare, but I would assume it should be at least as bright as the SDA or my HTC PDA phones.
I know the backlight LEDs are most likely not as good quality as the HTC originals, but I thought I could brighten the screen by possibly sending a little more current to the LEDs. First thought was maybe I could just reduce the resistance of the series current dropping resistor to the LED backlight, but it appears to be controlled directly by an IC with no series current dropping resistor, probably using PWM. So perhaps there is some service menu program that will let me adjust the brightness? I looked at all the hidden .exe files in \Windows using Resco but didn't find anything.
Anyone?
I too would like to know!
umm there is no way to do so... sorry
Related
Bluetooth makes the left light on the blueangel come up blue, wifi makes the left light come up light green. Cellular service makes the right light light green, and when charing makes it dark orange, and when fully charged it turns green. I'm wondering if anyone knew about a little hack that could make the cellular service light "blue" like the bluetooth light. I know it has to be possible... somehow.... ;-)
sure... grab a couple of torx screwdrivers. take the phone appart, unsolder the blue led from the left and graft it back onto the right... presto
Question is... have you got the minerals to pull your phone to pieces :?:
The bigger question is are you crazy enough to take a soldering iron to it :?: :shock:
id think twice... if not three time about it
DJUPLIFT said:
Question is... have you got the minerals to pull your phone to pieces :?:
The bigger question is are you crazy enough to take a soldering iron to it :?: :shock:
id think twice... if not three time about it
Click to expand...
Click to collapse
It's not a very big issue to do such a thing to your phone. I've known people who can take a CPU off a notebook mainboard and afterward put another CPU to that place correctly, all by soldering (by hand, of couse). Can you count how many "legs" the CPU has, and to solder those legs to the mainboard?
No no no, the right service light can make all sorts of colors, I'm just wondering if the other can do the same. Since they are the same lights if I switched them I wouldn't notice a difference because the bluetooth (blue) light can come out Green like the signal light when using wifi, etc.
No i dont think they can produce the same colours. your best chance is to unsolder them and reverse them... or... find somebody that can sell you a replacement with the colours you want. if you do find someone... let me know id be interested!
The Right LED is Tri-Colour and uses Red and Green as its two base colours (Giving Yellow when both on as the third colour). The Left LED uses Blue and Green as it's two base colours but I have never seen them both on a the same time (Which would produce a Cyan colour).
The two LED's are different types containing internally two coloured LED's and the left cannot produce Red and similarly the right cannot produce Blue.
It may be possible to hack when the LED's are illuminated by writing two wrapper DLL's for the BWLEDMgr.dll and the NLEDMgr.dll but this will take some time (I am hoping to get round to this as I am peed off with the right one flashing at night but still need it to indicate missed calls etc)
Did anyone manage to turn off the lights?
EDIT: This is how to turn off the lights: http://forum.xda-developers.com/vie...storder=asc&highlight=flashing+light&start=25
Hi!
I have a strange problem with one desire...
After changing the broken lcd screen, the display is very yellowish, everything witch was "white colour", is now yellow...
I have tested 4 lcd-s, changed the rom (multiple ROM-s), but same result...
Strange is even when i try to make color correction with Calibrator (calibrated-signed-42-Universal)... i can change red and green, but changing blue is not working to obtaining "white"...so it remain the same color with values (for blue) from 0 untill 1000.
Is there an another program to make color correction, or is a hardwere fault?
Any ideas?
Thanks
How exactly are you changing the "lcd"
There are two types of screen that the desire can use (depending on your model) amoLED (led!) or SLCD (super lcd). So unless you replace your screen with the correct replacement type for your specific handset your going to have strange issues.
Maybe you should take a very close look at your display, with a magnifying glass or a microscope and check if the blue sub-pixels work at all. It seems as if they don't work and you get amber colors.
I have received the phone with broken display, after power on, it was dark screen no display...so obviously i changed the lcd with the same model, wich is a Samsung (AMOLED i think), P/N: 60H00287-00.
I'm pretty sure it's the correct type of display if anything is being displayed. The problem might be the connection between the mainboard and the screen. Perhaps you've accidentally damaged it when changing the screen? Maybe you should post some pictures of your assembly showing the connection. That might let someone see the problem and suggest a solution.
if you need to understand better the problem i can upload some photos of the Desire...
The assembly is correct, i checked it, i think it`s a micro crack on the mainboard, suffered during the shock, so i will resolder the contacts... i will keep u updated...
meanwhile, i wait other opinions also..
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Amokh said:
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Click to expand...
Click to collapse
nice, hasn't taken you too long to identify it really either.
Amokh said:
I have found the problem...It was the filter near the lcd connctor...they are 3 filters...for each color...RGB...so after resoldering all of them, and 6 hours of work...it`s working...
Click to expand...
Click to collapse
I have the same problem as you, is it possible to post instruction and a picture .
I would like to fix the problem and don't know how.
Best Regards
It would be great if somebody can test it, thanks in advance.
How to test:
put a camera in front of the screen and play around with the shutter speed and the brightiness of the screen. When lines appears on the screen, its not good => pwm, without lines => good :good:
edit: i had links for pwm explanation, but not enough posts, sorry..
The question is about pulse width modulation, which I'm reading occurs when both of the following are true:
- you are using an LED light source with variable brightness
- you are using a camera with a rolling shutter
http://provideocoalition.com/aadams/story/pulse_width_modulation_is_not_your_friend/
The camera on the note 8 does not have an LED flash, so I think the poster either now knows that it won't be an issue, or is curious as to whether display brightness on the screen is controlled by pulse width modulation or a different technique.
In the latter case, I don't know, and since this is stuff that can't be seen by the eye nor in the viewfinder, but mostly in photo editing suites per the article I link to, I'm not sure why it's an issue here.
Hi roustabout
I think we dont speak about the same topic.
What I mean is the flickering of the display. A good example is found on youtube: Nexus 7: no PWM on LCD
A lot of LCD use this technology to dim, but its not proper dimming, just switch on / switch off the the lcd very quickly.
Some people have problem with this flickering but dont know that theres a problem, so for example dry eyes, getting tired very fast when working on the computer..
I think more the 95% of the usual monitors use this technique.
I hope this helps.
no, we're talking about the same thing:
'curious as to whether display brightness on the screen is controlled by pulse width modulation or a different technique.'
The article I found thinks it's not visible; what you've read or experienced suggests it's problematic.
What I can say is the first-gen ipad was very hard on my eyes; the note 8 is not like that, but not as good as e-ink. Much more fun than e-ink, though!
Hi, my english won't be very good because it's not my native langage.
I'm very sensitive to the flicker caused by PWM (Pulse Width modulation) wich is a technique used in the backlighting of a lot of LCD display to dim the brightness of the screen. I'm a "migraineur with aura" wich is a neurological disease, so like epileptic people my eyes and my brain are very sensitive to all sort of visual stress even the most subliminal one like PWM used at a high frequency. And I wanted to know if the note 10.1 (2014) use PWM to dim the screen at all level of brightness? I m' sure that it use it a least until 50 %, and that it is not PWMed at 100% brightness. Cause at 50% i'm sick litteraly within second, and at 100% i'm ok. But I have not tested all the level between 50 to 100 cause if it's flicker I can have quite a serious seazure, which would leave me ill for days, so it's quite hasardeous for my health. So what i'm doing is that i leave the system brightness to 100% wich of course is too bright, but I dim it with a soft (screen adjuster) that can dim the display without touching the backlight. But it's not a perfect solution cause the display is still using a lot of energy that way and there's a lot amount of blue wavelenght coming from it and i'm sensitive to blue wavelenght too. Basically as you can see, LED backligh is not a very good technology for epileptic people, eye-sensitive or migraineur. (I personally think it's not a healthy tec for anybody)
So, I just wanted to know if someone know if there's an "official" level where the note doesn't use PWM anymore to control the brightness of the screen, I mean below 100? Thanks in advance, and i'm sorry if my post can sound a bit confuse, it's not easy to try to ask and explain something in a langage that's note your native langage. Thanks in advance.
Maybe an odd question for XDA, but a question I need answered before I pull the trigger on this phone. Earlier this year while buying a new television set, I learned that I am amongst a small minority of people who are sensitive to LED-lit electronic displays that use pulse width modulation to control brightness. Apparently, I can look at a PWM CCFL-backlit (i.e. my 5-year-old computer monitor or my Nexus 5) screen or a DCM LED-backlit screen (my television set) for hours with no issue whatsoever but I can only focus on a PWM LED-lit screen briefly before I start experiencing symptoms of eyestrain and motion sickness. It's like looking at a CRT that flickers because the refresh rate is set too low. Now I know an AMOLED lacks a backlight layer, but it still has to adjust for brightness, so if it uses PWM to do so, then I have to presume it will cause the subtle flicker leading to the same problems that I've experienced with LED-LCD displays. Is there anyone here who could possibly shed some light (no pun intended) on this issue?
Yes, it uses PWM. My suggestion is to buy the phone, and if it bothers you, utilize the return window where you will receive a full refund.