Repairing an E-MU SP12 part 2 by Karel Post

A detailed film about the repair and revival of the SP12. It turned out the unit had suffered a major fluid spill in the past ,oxydizing the integrated circuits and its sockets. The frontpanel of the unit had lots of rust and other oxydation as well as defective switches and LED's. The display however was fine fortunately..................

Part 1 is about the revival of the CPU part, this is the cleanup and repair of some user parts and switches.

Category:

Science & Technology

Tags:

• E-MU
• SP12
• drum
• machine
• sampler
• 12
• bit
• repair
• karel
• post
• tool
• shack
• do
• it
• yourself

[nickles75]

what fluid is the bottle that you use for cleaning the boards?

[karelpostthuis]

alcohol / distilled water mix.

The water enables me to hydrate the dirt and clean it more efficient.

The alcohol helps dry it up faster.

[nptrock]

The ultimate Hip Hop machine - only if he could fix Hip Hop at the same time!!

[BigLesbowski]

it's the classic hip-hop machine! mainstream rap has nothing to do with that hardcore sound - all the modern tracks consist of one kick, one clap & some preset crap violins

[OGKaine]

@jazzroom Yeah, soldering takes a few ticks, but it's worth it man, get your beast back to where it needs to be. I'm gonna watch your vid and then come back to re-assess.

[jazzroom]

@OGKaine i made a video of my pad problem on youtube /watch?v=uEhCeJwx9eI

[jazzroom]

@OGKaine thanks for you reply OGKane :) i,ve took the top of the pad off and it all looked very clean and i've scrubbed the spring and the sesor with a tiny screwdriver... but no success... the pad doesnt trigger anymore :( i ve asked on SP1200 forum: someone suggested that i should check if the solder joints are ok and check the sensor on continuity with Muitimeter ,but i still don't have one yet. i've ordered a pad sensor replacement from Bruce Forat, now need to learn fine soldering ;)

[OGKaine]

@jazzroom take the button off and clean it's sensor with a pencil eraser. should work fine after that.

[chrisrap4ever]

thats what the fuck im talkin about all the time!look how easy that man makes dope beats in just few seconds,cause he can use all his fingers and not a faggot ass mouse.fuck all PC software for makin beats and all that shit,aint nuttin like the devices!thats why all music is wack now...

[jazzroom]

Hi Karel, great job - you are a vintage gear guru! have an SP12-Turbot-he 1st black drum pad started to fail to trigger.only if i hit the left side of it it triggers... but its really annoying.. :( since the drum pads for SP12/1200 are impossible to find, i've decided to try to open the box for the 1st time and try repair that bad drum button. What materials and method i should use to clean and repair the drum pad? P.S. alvast bedankt-ik kan Nederlands spreken-heb in de 90's in Adam gewoont

[TheRealChuxter]

Open heart surgery skillfully done on a wonderful vintage piece.

[TheAstroKid]

Gaaf man, hebt ook het zelfde probleem

[enmetertre]

Grate work, Do you know where to get the SP-12 TURBO kit?