JBL Horizon backlight adjustment

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This video shows the JBL Horizon alarm-clock / FM radio / Bluetooth speaker LCD back-light adjustment for better night readability.
The JBL Horizon is apart so you can see the internals and I explain how was it taken apart.
The added resistor is 180k Ohm. This modifies the light sensor that it never completely "shows" that it is completely dark. Instead, the added resistor will work as there would be still some light in the room.
If there is more light in the room (Eg: complete daylight) then it will work as it is used to be. So, it is only adjusting the very dark room light level.
Please enjoy.

Опубликовано:

10 апр 2017

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Комментарии : 72

@kylehor 3 года назад

This is awesome. I lived with the dim clock for 2 years and jbl says it cannot be changed. Chanced upon this and now I can see the time in the night and early morning. Thanks so much. BTW, I was temped to try 200K for a dimmer light but used the tested 180K instead. Do not fancy opening it up too often.

@Doctor-yr3uy Год назад

thank you Sir.i had this unit for nearly 4 years and the backlight was a pain in my ...,,🤣 according to your instruction,opened the front panel with a plastic tool easily and soldered two pins together,so the light in max always and can be read even in mid day in desert👍🏻

@DePee 4 месяца назад

Hi, can I ask you (to be sure) are you referring to the 2 pins which Haza soldered the wire on, did you short those two together?

@Doctor-yr3uy 4 месяца назад

@@DePee yes.short circuit

@DePee 4 месяца назад

@@Doctor-yr3uy Found a better solution posted here; hold the scan button for 3 secs to select brightness !!! This should be noticed in the main topic post

@Doctor-yr3uy 4 месяца назад

@@DePee I will try that tomorrow, thanks

@DePee 4 месяца назад

@@Doctor-yr3uy could be it won't work anymore because you soldered it and "locked" the setting with it...

@sekone1 6 лет назад

Thanks a lot mate! Your tip worked like a charm. One remark for future modders - my version of alarm clock had some "improvement" from manufacturer. Whole "window-mirror" part was mounted with double sided adhesive tape. As soon as I tried to remove it with screwdriver it started to crack. Hopefully this crack did not reach inner window, and its not visible after reassembly. Please use your hairdryer to warm it up before you will try to peel it off.

@lousybreaker 5 лет назад

Appreciate you taking time to post this, very helpful. Thank you!!

@aleksidimitrov2312 10 месяцев назад

Thanks so much, I just needed the last step to fully disassemble it. Thanks

@cgafvert 6 лет назад

I just completed this modification. No need to remove anything on the back, just the front. For maximum brightness all the time simply connect the two leads of the light sensor together.

@cgafvert 6 лет назад

Hi Michael. The leads on the light sensor are close enough together I just bridged them with a solder joint on the opposite side of the board.

@cgafvert 6 лет назад

Glad it worked for you and the wife is happy!

@videodork123 5 лет назад

Awesome advice. Did this yesterday.. took 10 minutes.. worked like a charm. The auto-dimming was my biggest complaint about this device. Thanks for posting this!

@antchagas 5 лет назад

@@videodork123 true story!!!

@froilandeguzman676 5 лет назад

Hi chuck. Max bright is too much at night. Any idea how to make it as medium bright (50%) but fixed? Thanks.

@maurizio76 5 лет назад

Man, thanks a lot. I was unable to open this stuff. Thanks to your vid I could fix my display issue without breaking nothing. Ure great.

@engmohamed5514 5 лет назад

the jbl hang and dont respond to any click. and if i disconnect power and return it it works fine for a minutes then hang. and recommendation for root cause?

@theminimalist- 2 года назад

Was it missing digit on the clock of the digital issue you mentioned? I have this issue but wouldn't know how to fix it.

@maurizio76 2 года назад

@@theminimalist- Hey. The trouble was not this. For me it was a question of light that was extremely low for all digits. But you have to know my JBL finally broke and I had to put it in the bin... For me this model is not ok. Disappointement.

@maurizio76 2 года назад

@@engmohamed5514 Sorry for not answering. I'm just finding your post now, 2 years ago... I could not have helped you anyway 😯

@meczengo 5 лет назад

Nice hack, thanks. Little notice: small front ring can not be removed, pull only big with mesh.

@salvosix302 2 года назад

amazing video i needed it to find out how to take the thing apart

@sealedwithabliss3254 2 года назад

For horizon 2, just hold the scan button and you can set brightness level.

@marjan5591 Год назад

Great find, not even manual points to this! Options for LCD brightness on Horizon 2 are 1 through 5, and AUTO. Too bad that AUTO setting seems to go from 5 in bright environment, to 1 in poorly lit room, where time is hardly visible. It should go to at least to 2 as a transition. I am sure this could be solved with firmware update. Firmware is officially available on JBL site (it's a .rel file) - maybe a challenge for hacker?! Would be greatly appreciated.

@sealedwithabliss3254 Год назад

@@marjan5591 in my case I just set my horizon 2 brightness to 5. auto brightness goes down to 1 is hard to see

@marjan5591 Год назад

Yea, but it's too bright to sleep right next to it.

@akubukanbuzzer Год назад

wth, i read all the manual, and wualaaa nothing to see there XD

@DePee 4 месяца назад

THANKS MAN!!!!!!!!!! I almost soldered the damn thing for nothing!!! Awesome!

@franzkarlvj 4 года назад

haha destiny brought me here 12 hours after l bought it (btw l'm very happy of if) thx for the tuto !! I'll probably try it ! Others yt videos also mentions yours because seems like most of people are happy of that product but complains about the dim fact problem :-)

@PhininhoJow Год назад

Thanks for the tip!

@alejandroituarte1244 6 лет назад

Thanks!!!!! Excelent

@MeMe-gx7oh 6 лет назад

Awesome video! Hey, is the light sensor just not and "on off" switch? Could i either cut it out or just "jump" it? Is that 180k resister necessary for this hack?

@cgafvert 6 лет назад

For maximum brightness connect the leads on the photocell.

@rcanuza123087 4 года назад

i cant switch on the light on. do know how yo fix it? thanks

@frefred2522 Год назад

Hello I would like to wake up JBL horizon 2 new, but at startup we can see written around the date and below a little word marked demo mode (which then fades) the time the date everything remains displayed but impossible to adjust anything no button works that then-I do to remove the demo mode?

@drone49 4 года назад

Thanks for your awesome video. With the 180k resistor, the it has raised the brightness floor a little too much.. Meaning it's a little bit TOO bright at night now.. If I was to try to find a happy medium, would I use a higher resistance value, or lower? I put an 82k resistor on there, thinking that less resistance would do the trick, but it seems like it's constant full brightness now. Thanks again.

@raniluz2152 6 лет назад

thanks!

@engmohamed5514 5 лет назад

the jbl hang and dont respond to any click. and if i disconnect power and return it it works fine for a minutes then hang. and recommendation for root cause?

@franzkarlvj 5 месяцев назад

Now l have this problem : alarm 1 and 2 displays on the screen are not working anymore after they were blinking lower and lower weeks after weeks... they were displaying enough each time l removed the power line from sector (during minutes, then seconds.. enough to know if it's on/off), but l can't see them anymore.. so l don't know if alarm 1 and 2 are "on" or "off".. wich is sad because every other functions and displays are working perfectly.

@sergfitisov 6 лет назад

Very good! Day lights it’s ok? My JBL Hor. Very bad, help plz with resistor .

@frefred2522 Год назад

Bonjour j'aimerais du réveil JBL horizon 2 neuf, mais au démarrage on peut voir écrit vers la date et en dessous un petit mot marqué mode démo (qui ensuite s'efface) l'heure la date tout reste affiché mais impossible de régler quoi qu'il soit aucun bouton ne fonctionne que puis-je faire pour enlever le mode démo ?

@Tafka25 Год назад

i broke off the sensor and just connected the 2 terminals together. could it be done that way? the screen is now always bright, but was it ok to do it this way? Please answer. I have horizon 2 whai you use diod?

@DePee 4 месяца назад

you know what? Someone posted here to push the scan button for 3 seconds and you can adjust the brightness between 1-5 and auto. Go figure! lol

@dvitali3053 5 лет назад

Все хорошо спасибо.только паять ничего ненадо, достаточно снять с светового датчика пластмассовую трубку, датчик света совсех сторон прозрачный и подсветки дисплея хватает чтоб датчик не переходил в ночной режим и ярко днём и ночью.

@nismofromrus 5 лет назад

снял с датчика трубку - не помогло - все равно затемняется в темноте,

@dvitali3053 5 лет назад

@@nismofromrus так трудно сказать глянуть бы фотку - принцип такой что на датчик должен попадать свет,у меня вокруг дисплея горят постоянно диоды и этого света хватает,и он(светодиод) думает,что все время день-(может не оттуда сняли трубку)

@MrFlymonkeyhall 5 лет назад

Ребят, не совсем понял - чтоб добраться до дисплея, достаточно снять переднее кольцо пластиковое? Оно просто на защелках?

@RomZerioR 4 года назад

Поступил следующим образом: разобрал JBL Horizon (только нет необходимости вынимать центральное пластмассовое кольцо, так как оно прикреплено к накладке динамиков и снимается вместе с ней). Снял изолирующую втулку со светового датчика, обрезал её по всей окружности на 1/3, одел обратно полностью, верх датчика стал приоткрыт. Далее взял основное секло и сделал больше диаметр прозрачного отверстия до размеров датчика света с помощью мелкой отвертки черный слой (более жесткий) и отвертки и влажной салфетки серебряный слой (чтобы не царапать стекло). Представляется возможным сделать это аккуратно, так как с обратной стороны стекла наклеена плёнка с клеевой основой и на ней характерная прорезь под размер светового датчика, получается чистишь как по лекалу по окружности. В итоге яркость пришла в полный порядок без всяких резисторов и появилось ощущение, что допущено нарушение технологического процесса при изготовлении всех JBL Horizon в плане регулировки яркости, а именно: размер отверстия для светового пучка датчика слишком мал, хотя плёнка внутри сделана точно под правильный размер и авторегулировку яркости.

@alex_x2297 3 года назад

@@RomZerioR здравствуйте. Можно подробнее, желательно с фото , как это сделать. Нигде не могу найти в интернете как это сделать без пайки резисторов и т.д.

@Fel18ipe 7 лет назад

Hello friend. This is amazing. I am looking for something like this for months. Is there anyway for you to make a detailed video explaining this better? I would like to fix the low brightness in the dark, but I was not able to understand how to install that thing in your hand. Many thanks!

@circuitdotlt 4 года назад

The quality of sound is nice, however it is so bad in software.. for example I can't figure out how do I set the stations. Tried it per manual and many other ways, but no luck.

@nandrys 6 лет назад

Is this 2.1 or 2.0 system? Is there any woofer inside???

@lukie4ever 5 лет назад

Only a port

@SteveGetsiv 6 лет назад

I took mine apart in order to reduce the volume - it was WAY TOO LOUD. Put a 47 ohm resistor in series with each speaker driver. It's much nicer now. I really wish the alarm setting had a max volume.

@lukie4ever 5 лет назад

Its loud to wake you up...

@HoverUs-io1eo Год назад

I just got a Horizon with the Sleep function for my son. The lowest volume 01 is loud enough to hear in other rooms :( I had a SPST switch I put in parallel with (2) 12ohm resistors in series (24ohms), combining the R and L negatives. Worked good, but not enough. I have on order a DPST switch and 2 120ohm 1w resistors, should be perfect. With the switch "off", the resistors lower the volume, but for full volume just switch to "on".

@Fel18ipe 7 лет назад

Pls any help will be appreciated

@Christian-gb8nd 5 лет назад

For now i just short cut the two pole of the photoresistor. But the light is full power. I'll buy a new one and see if it work. If it das I'll leave the ref here...

@fotofotE12 4 года назад

Hi... so is it enough just connect both poles of the original photoresistor? No need to connect any other resistor?

@josevictorfernandez9306 4 года назад

Hi Do you know how I can fix the LCD? Some numbers do not appear

@Paul-bd6xi 4 года назад

I have the same problem

@glubflub01ttv 4 года назад

Jok a videóid

@drpoundsign 3 года назад

Typical s**thole hotel alarm clock! ALL modern clocks should have a dimmer function...and, not have buttons that do two different things!!

@DePee 4 месяца назад

you know what? Someone posted here to push the scan button for 3 seconds and you can adjust the brightness between 1-5 and auto. Go figure! lol (Worked for me)