ROLAND ALPHA JUNO JU-2 - replacing the LCD display backlight (also see new video)

[@SemeshkoV]

I've my Juno-1 from '94, bought locally in a market in Belfast for £110. And still going strong.

[@waheex]

nice find

[@natenussey6282]

Thanks! I've had my alpha Juno 1 for twenty years now. The EL strip just came in the mail, I can't wait to try this out!

[@mountaintoprepairshop664]

Well, it worked perfectly! I do repair videos as well and I gave your channel a shout out and the credit for having the idea, and the line on EL strips. Thanks again! I've had this synth for 20 years now and I've never seen it light up much at all until now.

[@mattevans7884]

Ahhh man, I'd love an Alpha Juno.......I will have one, one day!!

[@mattevans7884]

Annnnnd I just got one! And it needs an EL replacement, so you've helped me already!! Thank you

[@waheex]

glad it helped

[@TheZombo66]

Hey the sellar finally responded back he has some more in stock but already purchased from a different seller On ebay I saved him for future Reference thank you mindburner!!

[@waheex]

great stuff, best of luck

[@thomasekman4548]

Thanks 👍🏻 I just bought a Juno 2 and when I tried it out before purchase it was lunchtime and a strong sunlight and we was outdoors and not in a studio... I had a suspect it was something wrong with the "weak backlight"... the seller told it was the "daylight"... when I got back to my studio I realized the LCD backlight was really weak....I guess I try follow your video...👍🏻

[@waheex]

makes a nice difference when it's replaced. You can also use a 16x2 LCD panel, but I haven't tried this myself

[@matthieumalon3743]

thanks a lot ! I tried with your help and just succeeded in changing the display on my alphajuno1. it's a bit more complicated than the juno2 cos you have to unscrew the keyboard to access the display. but it was ok and now I have a wonderful new screen. Happy ! thanks again for this video (and the link to order the replacement part) !

[@waheex]

hi glad you got it sorted and it makes a big difference to the enjoyment of the synth.

[@natenussey6282]

It came out great! I made a video for my electronics repair channel, Mountain Top Repair Shop. It will be out in a couple weeks. I'll mention your video in the opener as it was the inspiration for the repair.

[@waheex]

hi glad it was useful and best of luck with your new video

[@303g]

hi ,do you know if this fixes the hum ,from the screen ,that you get ,did or does your screen hum ? always wanted to get my screen fixed ,someone was selling new oled ones but ,cant see them for sell now ,but if this works that would be great

[@waheex]

hi my old screen didn't hum it was just dull. I think a replacement would not cure a hum problem as it may be the small transformer that is making the noise. A LCD screen may be a better option as it doesn't need a transformer to run. The transformer could then be removed

[@vladtirla8801]

Any chance to fix the aftertouch on alpha 2?

[@wilbstrange2]

What do you have to do to release the array? Do you pry open the corners and pull the array out after desoldering the array off the circuitboard ?

[@botany500kojak]

Cheers for this. I will order a strip myself. One question, what is the brand name of the desoldering gun you used?

[@waheex]

hi it's a duratool D00672 desoldering station.

[@TheZombo66]

Hey, good evening Mindburner thank you for this informative video could you send me or mention a link where you can buy these strips ?? I’ve been having a very hard time looking for them on the Internet. Or eBay Thank you.

[@waheex]

hello, try these guys www.ebay.co.uk/itm/233203448746?hash=item364c023baa:g:BzwAAOSwEzxYdRJK&amdata=enc%3AAQAHAAABAGhWxFr1IrloVQ9zPwHXinIf4FUQi%2BssLchp651R0uYqCxTOD6XudNYPl33ep80Z8Tz2YNPVM3DuRUqDF8GfwdWsoaH52smflcTAC8%2FC%2Ft6vz2CzoKDl0TLS3EF730iIe3l85chbp6nkaLLW33EAusq3sglI2F1dXbDtHGMwHErU9VAlmFz4iBtFvUOqwQdnvKn%2BDkAAimk76vsqWqJT2lm0I2lcnOHzrZEnM3rAHQ%2Bhd6SZo1zoTJbetfc3f0AvZDQyw0W4w8dgkFcEazklxzbZlPCjIcUCghM8%2BsG9wQya3Ak9cUMGlp0NJyBZeX6MWfz5g7Loae0UQ1efLTGVcuY%3D%7Ctkp%3ABk9SR6D_1vXmYQ

[@TheZombo66]

@@waheex Damm thank you brother just open up my Alpha Juno 1 just a few , I have the latest firmware, thank God it mounted will have to see how to get to that area and install it with a backlight on the existing LCD Screen if possible ,cheers!!

[@wilbstrange2]

Hello I just a Roland RSP 550 sound processor and the LCD Backlight has dimmed as well . I’m trying to repair it myself. I cannot find the part number from Roland because there seems to be no available service manual? How can I find one and could this be found? I was hoping I could switch a piece out like this and repair. Anyway you could help? I

[@waheex]

hello, without knowing the exact model of the display it's hard to know if this would work, but many are just 16x2 displays. There are many of these for sale on ebay and the pinouts are the same or similar to the original displays. There are usually 2 extra pins for the backlight. The hardest part is physically fitting the new display in the case. Some info here on the RSP 550 display www.gearslutz.com/board/geekslutz-forum/1088513-roland-rsp-550-backlight-replacement.html

[@wilbstrange2]

So there are 2 pins that are soldered but I don’t want to use a resister to drop voltage to 3 volts... I was hoping to have one that’s 3 volts? Is there a difference in using a EL Ray blue backlight vs an array that I guess is translucent and shows a green background?

[@waheex]

the EL panels use a high voltage driver, usually over 20v. I you replace these with a LCD display, then you need to provide a new power lead, usually from the circuit board or something. The LCD displays use a 5 or 3 I think. I just not sure about this model of processor. Usually someone on ebay has a replacement spec'd

[@ogasi1798]

Do you have the link to where you got yours by chance ? I'm in England too and I keep seeing sellers I'd rather not use and certainly not for 6quid

[@waheex]

sure , these are the guys www.ebay.co.uk/usr/elpanelandtape?_trksid=p2057872.m2749.l2754 I got the 'light blue' one

[@TheEmperorMachine]

@@waheex Hi Great vid can you tell me what size you bought please ?

[@waheex]

@@TheEmperorMachine 18mm x 74mm

[@TheEmperorMachine]

@@waheex Hey thanks for letting me know :-)

[@TheZombo66]

Darn they are out of stock on the light Blue NOOOOOO!! lol will have to just wait heeeee!!

[@waheex]

hi there's other suppliers if you just check out the size. Personally now I would fit a LED display or even OLED, although they're more expensive, especially for OLED