Repairing & Restoring a Roland Juno-106 to Better Than new! Episode 2: Power Supply, Keybed

This is episode two in the Juno-106 restoration series. In this episode, I show how to disassemble the Juno-106, inspect the boards inside and start on the restoration. I work on the power supply and encounter a big problem. I remove and inspect the CPU board and voice board, install the Kiwi-106 board, then remove, disassemble, clean, restore and reassemble the keybed.

Time is not kind to old synthesizers, and the Juno-106 is no exception. In this video series, I take an old Juno-106 and restore it to better-than-new condition, with new chips and hardware, and then add all kinds of new functionality to bring it into the 21st century - while retaining the important qualities that make a Juno-106 so special. Join me on this restoration journey.

Juno-106 Restoration Episode 1:    • Repairing & Restoring a Roland Juno-1...  
Juno-106 Restoration Episode 2:    • Repairing & Restoring a Roland Juno-1...  
Juno-106 Restoration Episode 3:    • Repairing & Restoring a Roland Juno-1...  
Juno-106 Restoration Episode 4:    • Repairing & Restoring a Roland Juno-1...  

Roland Juno-106 on Reverb: https://www.awin1.com/cread.php?awinm...

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Poly-800 Restoration Video:    • Fixing, Restoring and Modding a Korg ...  
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My keyboard Z stand: https://amzn.to/3Ix5xuF
Z stand extra tier: https://amzn.to/3XtVpa6
My keyboard A frames: https://amzn.to/3YwAPav
My silver keyboard covers: https://amzn.to/40VySFx
My black keyboard covers: https://amzn.to/3Gt5oXz

Parts:
Kiwi-106 Upgrade: https://www.kiwitechnics.com/kiwi-106...
Roland Juno-106 Key Contacts: https://www.awin1.com/cread.php?awinm...
M5230L Regulator IC: https://www.ebay.com/itm/164499465408
Xvive MN3009 Replacement Juno-106 Chorus BBD: https://www.awin1.com/cread.php?awinm...
Dust Shield Set: https://syntaur.com/Part-7845-Dust-sh...
Analogue Renaissance Voice Chips: https://syntaur.com/Part-4315S-Voice-...
Analogue Renaissance Filter Chips: https://syntaur.com/Part-4320S-Wave-g...
Juno-106 Volume Pot: https://syntaur.com/Part-4874-Potenti...
Juno-106 Portamento Pot: https://syntaur.com/Part-2468-Potenti...
Juno-106 Bender Pot: https://syntaur.com/Part-4952-Potenti...

Tools:
Anhydrous Isopropyl Alcohol: https://amzn.to/3FYcfag
Pro Honda Spray Cleaner: https://amzn.to/3YN7Ak5
3M Spray Adhesive: https://amzn.to/3mg87wF
Vessel JIS Screwdrivers: https://amzn.to/3hN1RKE
Desoldering Pump: https://amzn.to/40bh8Vu
Soldering Station: https://amzn.to/3ofPgCz
DeOxit D5 Contact Cleaner: https://amzn.to/3mIihpT
DeOxit F5 Fader Cleaner: https://amzn.to/3KGZ8Nj
Rigol DS1054Z Oscilloscope: https://amzn.to/3VghKIw
Thermal (infrared) camera: https://amzn.to/3XbEIRk

0:00 Introduction
0:51 Opening the Case
2:21 What's Inside
5:53 Removing the Keybed
7:30 Removing the Power Supply
8:38 Examining the Power Supply
9:53 Replacing the Voltage Regulator IC
12:09 Cleaning and reassembling the Power Supply
13:01 Testing the Power Supply
16:10 Diagnosing the Problem
19:01 Removing the CPU board
19:41 Installing the Kiwi-106 Board
22:32 Removing the Bender/Portamento
23:40 Removing the Voice Board
25:31 Calibrating the Power Supply
29:14 Disassembling the Keybed
32:32 Replacing the Keybed Contacts
34:59 Cleaning the Keys
36:04 Reinstalling the Keys
37:49 Reassembling the Keybed
40:59 Summary

#Roland #Juno106 #Restoration