JP-8000 Master Restoration and Blue LED Mod (FULL TECHNICAL VIDEO) シンセサイザー復元 

The Roland JP-8000 is one of my top favorite synthesizers of all time! It looks AMAZING with the all BLUE LEDs & Display! Excellent work!

I've had mine since the 90s. In storage for most of those years. But have been playing with it again, for last three years. In great shape, except was taking longer and longer to boot up, make sound. I found a schematic, and figured out which cap it was, replaced it. Next time I have problems, I'll refer to this video, and replace the rest of the caps. Thanks for sharing this info. Subscribed :-)

Wow. Your efforts are mind blowing. I hope you get paid well for this restoration.

awesome video

Very educational video! Thx 🙂

good job !

Absolutely top notch job! Your JP looks totally stunning! The blue LEDs are a really nice touch. My JP, which I have owned from new, is undergoing a similar resuscitation process right now, she has had her keyboard contacts cleaned and new 105 degree electrolytics. I had to disassemble and restore the stereo volume pot (as I could not find a replacement). Also she has new tack switches and rotary pots. I am about to fit 10K slider replacements. The slider pots have 0V one end and 5V on the other, the wiper goes through a 100R to a 74HC4051 analog multiplexor input, then to a buffer op-amp and then finally to an ADC input, so am thinking 10K should work with the same resolution as the original 20K? Great video, very informative and logically laid out. A true professional and complete perfectionist at work. Liked and subscribed! Thank you! BIG love from Techtone in the UK. P.S. My pitch bend and modulation controller stopped working after a battery change. If any one else gets this problem here is the solution: 1) Turn on power while holding [OSC2 SYNC], [-12dB/-24dB] and [FILTER TYPE] to enter Test Mode. Wait until display indicates "[1] MIDI Test." 2) Press the [3] button to display "[3] Bend Mod." 3) Push the bender lever left fully and gradually return it to the center. Press [LOWER]. 4) Push the bender lever right fully and gradually return it to the center. Press [UPPER]. 5) Push the bender lever to the MOD position and then gradually return it to the original position. Press [KEY MODE]. 6) When the '*' appears on the display, press [UP]. 7) From the previous display, press [4] to display "[4] Ribbon." 8) While pressing down on the left edge of the ribbon controller, press [LOWER]. 9) While pressing down on the right edge of the ribbon controller, press [UPPER]. 10) While pressing down on the center of the ribbon controller, press [KEY MODE]. 11) When the '*' appears on the display, press [UP]. 12) Turn off the power of the JP-8000. (Thanks to BevBKeys for this solution)

Excellent restoration, im glad you have a unit that you feel comfortable with, i do feel that some of the stuff was unnecesary, like replaciog the IEC socket and some of the output jacks, i get the mains but not the control ones, and the midi ones only im sure were just an asthetic touch.

Amazing restauration! Do U have a more detailed specs overview for each capacitor used?

Gogeous Restoration! Can you let us know what LCD screen replacement you utilized & what modifications were needed?

Looks awesome. I'm currently in the process of looking for someone to change all the capictors in mine. Luckily all the slides, etc work, but seeing this video got me thinking about full restoration. I saw the LCD on ebay and was thinking about doing that mod but now seeing all the blue LEDs (and blue being my favorite color) makes me want to go that extra step. How much would you charge to do this to my JP?

Hi, what wolud be first to check when Midi In does not work (Out is fine)? Appriciate your feedback.

EXCELLENT video! Hey my JP-8000 wont save patch or performance changes anymore. I tried swapping out the battery, but no luck. Everything else works great. I hit write, I get the "Completed!" message, but the patch is the same before the modification attempt after a power cycle. Gracias for any ideas I could pass on to a tech! thanks!

Any possibility of you uploading that sweet folder with all of the schematics and parts? I'm having the issue where my unit only powers on once in a blue moon. Usually it won't boot up and only has the green blocks at the top of the lcd. I'm pretty sure it needs to have all the elec. caps replaced. This video is excellent by the way! I've had my JP8000 for about 14 years and I haven't been able to use it in the past 3 :(

hey can you share the files you showed?

What display did you use to replace the old one?

Looks Superb & great documentary. I replaced my LCD but it still becomes jumbled after a few minutes to the point where its just jibberish. Can you enlighten me as to which cap to change out please? Thanks a bunch in advanced.

hi, just wondering, which LCD did you use?

A cosa possono servire i LEDs blue???

Great vid, thanks for the info. Thankfully mine has no issues so far, only a dead battery I replaced a few years ago. That restored JP8000 looks awesome with the updated LEDs. Do you know if JP8080s are susceptible to the same audio issues? I would guess the hardware is the same, for the most part...

don't the blue LEDs have a bigger voltage drop? isn't that going to mess things up ?