Скачать или смотреть Roland R-8 - Reassembling the circuits to the backplate - Restoration Part 7

In Part 6 my OCD kicked in and I ended up removing the rusty back plates from the Roland R-8(s) bearing in mind I have two of these. The plates were then stripped back to bare metal so all the rust could be removed and they have been resprayed black, which hopefully will stop the rust returning.

In this video we start the re-assembly process. The first task is to re-attach the main circuit board and the input / output board to the back plate ready to installed these back into the plastic case.

It was my intention to actually get the circuit boards back into the lid assembly as well in this video, but on inspection the lid I found it covered in dust and needed cleaning before re-assembly. The cleaning and re-assembly of the lid is covered in the next video.

At the end of this video the circuit boards were reassembled to the refurbished back plate ready to go into the lid assembly.

Background

The Roland R-8 was acquired as a job lot with another instrument. I am a sucker for a drum machine, so the acquisition of this Roland R-8 was a bonus. The second bonus was that when I opened the box containing the Roland R-8 I also found a Roland R-5. But the R-5 will be the subject of another video series.

On acquisition I noticed that the screen on the R-8 was not displaying the characters correctly. After a bit of Googling and reviewing a number of the forums it appeared that R-8's having defective screens was a known issue and would require the screen to be replaced to fix the problem.

This created a problem in itself. Most instruments of this era were supplied with an LCD screen and back light combination. And there are after market screens based on OLED technology that, with a few changes, can be fitted to the instrument. This is not the case for the Roland R-8. This LCD screen made by Samsung has a custom display and is no longer manufactured. There is no OLED equivalent that replicates this custom display.

Once I started to strip the drum machine down I found that there was additional work required to bring this instrument back into use within my studio.

The equipment mentioned above (if you can still buy it!):
Roland R-8 (Used): https://themusictechguyuk.me/3ewF3ZE

Tools and spares used to make this video:
Dremel Drill: https://themusictechguyuk.me/DremelDrill
Stanley Ratchet Screwdriver : https://themusictechguyuk.me/3m4eMFQ
Bosch Screw Driver Bits: https://themusictechguyuk.me/2WcZR3l
Black Primer Spray Paint: https://themusictechguyuk.me/BlackSpr...
Masks for sanding and spraying: https://themusictechguyuk.me/FaceMask...
Wera Kraftform 1000V Screwdrivers: https://themusictechguyuk.me/1000VScr...
Storage Box Organiser: https://themusictechguyuk.me/StorageB...

📖Chapters:
00:00 Opening
00:10 Recap and next steps
02:38 Channel promotion
03:01 Parts on the bench ready to go
03:27 Attaching the circuit boards to the backplate
04:44 Attaching the power collar
06:06 Recap
07:48 Circuit board revisions

#rolandr8 #RolandR8DrumMachine #r8 #Roland #drummachine

Videos in this series:
Part 1:    • Roland R-8 - Assessment of the project - R...  
Part 2:    • Roland R-8 - Accessing the drum machine - ...  
Part 3:    • Roland R-8 - Removing the display from the...  
Part 4:    • Roland R-8 - Installing the display to the...  
Part 5:    • Roland R-8 - Removing the rear plate for r...  
Part 6:    • Roland R-8 - Repainting the Backplate - Re...  
Part 7:    • Roland R-8 - Reassembling the circuits to ...  
Part 8:    • Roland R-8 - Cleaning the top for assembly...  
Part 9:    • Roland R-8 - At last the final assembly - ...  

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Roland R-8 - Reassembling the circuits to the backplate - Restoration Part 7 - 2025-08-09