TR-909 Battery Case Missing

ekwipt · 14th May 2011

Just bought a TR-909 from Ebay, it looks great, excellent condition minimal scratches, still haven't fired up (just walked in the door with it).

After going through the manual it says there's should be batteries under the battery cover. the battery cover looks brand new very shiny, not sure if it original, but inside there is no battery case and it looks like it has been unsoldered.

Syn303 · 14th May 2011

Your battery holder is missing, it's usually a metal rectangular box (it sits on risers), those two screws you see in the second picture are where it should be.

Take the 909 backplate off (underside lid) and see if the battery connector (+/- clip) with the wires has fallen inside somewhere.

You may need to rig up a new battery holder and attach it to the underside of the 909's backplate. Without batteries in, your 909 will not store any patterns.

ekwipt · 14th May 2011

Cheers thanks for that, the other thing that's worrying me is the clap is it a hard thing to fix sounds dodgy to me like it's missing the snappy part of the clap at the start and only the tail is playing?

http://soundcloud.com/ekwipt/tr-909-handclap-problem

ripe · 14th May 2011

It looks like the board under the batteries has seen some major damage.
All of those red wires are there because the PCB traces have been corroded. The battery holder was probably removed because it would have been in very bad condition with that much battery leak damage.

cheers
ripe

Acid Mitch · 14th May 2011

The clap sounds like it needs the reverb tuned down.
There is an internal pot to do this.

ekwipt · 14th May 2011

Looks Like I'm going to have to put this in for a service then.

The clap sound is very quiet compared to the rest of the sounds as well.

Oh well I guess you win some and loose some.

Johannes R. · 26th July 2011

I have the same problem, exact same sound for the clap... Did you find someone able to fix it finally ?

Acid Mitch · 26th July 2011

Quote:

Originally Posted by Johannes R.

I have the same problem, exact same sound for the clap... Did you find someone able to fix it finally ?

Did you try adjusting the wet/dry pot inside ?

Johannes R. · 26th July 2011

Not yet, that's an idea yes.. I'll have a look and let you know !

Johannes R. · 26th July 2011

Ok, fixed ! Thanks a lot !!! It was a bit stressful to disassembly it, but everything works fine now.
Thanks again

ekwipt · 11th February 2012

Hey guys, my 909 got fixed and was sounding great but after moving interstate the bad sounds back but now a little worse.

The clap sound is very muffled and the ride cannot be heard at all.
I'll post samples in the next couple of days, but here's my problem.

I want a perfect 909, so I want to sell this one, I bought it for 1500 AUD and spent 100 on it to fix it plus bout the rev ROM to fix the midi timing and had that installed so that was probably 50 bus or so.

Do you think it's best to get it fixed again and sell it on eBay or locally as I feel it's probably quite fragile or sell it as is?

What's the realistic price for fixing and selling and selling without fixing?

14th May 2011	#1
ekwipt Gear addict Joined: May 2008 Posts: 406 Thread Starter	TR-909 Battery Case Missing & Clap problem Just bought a TR-909 from Ebay, it looks great, excellent condition minimal scratches, still haven't fired up (just walked in the door with it). After going through the manual it says there's should be batteries under the battery cover. the battery cover looks brand new very shiny, not sure if it original, but inside there is no battery case and it looks like it has been unsoldered. __________________

14th May 2011	#2
Syn303 Gear addict Joined: Aug 2010 Location: North of Edinburgh, UK Posts: 434	Your battery holder is missing, it's usually a metal rectangular box (it sits on risers), those two screws you see in the second picture are where it should be. Take the 909 backplate off (underside lid) and see if the battery connector (+/- clip) with the wires has fallen inside somewhere. You may need to rig up a new battery holder and attach it to the underside of the 909's backplate. Without batteries in, your 909 will not store any patterns. __________________ www.myspace.com/syn303 \| www.syn303.bandcamp.com \| www.soundcloud.com/syn303 \|

14th May 2011	#4
ripe Gear nut Joined: Jul 2008 Posts: 112	It looks like the board under the batteries has seen some major damage. All of those red wires are there because the PCB traces have been corroded. The battery holder was probably removed because it would have been in very bad condition with that much battery leak damage. cheers ripe __________________ gear: Elektron MDUW mkII, genoQs Octopus, FR Revo (x2), V-synth XT, JP-8080, KP3 (x2), TR-909, AXiS-64, TB-303, Virus TI reverse engineered: AW4416 filesystem (AWExtract), Doepfer Schaltwerk operating system (unreleased) Music and videos: ripe909 Free album: fliptout ; Custom 303 clones: http://www.socialentropy.com/bassline

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread starter	Forum	Replies	Last Post
TR-909 Battery Cover Wanted	mamero	Electronic Music Instruments & Electronic Music Production	0	17th January 2011 07:05 PM
The advantages of using Guru over Battery	Killah_Trakz	Rap + Hip Hop engineering & production	32	14th August 2007 01:20 PM
Just copped Battery 3 need HELLLLP!!!!	gdeusthewhizkid	Rap + Hip Hop engineering & production	4	1st February 2007 02:27 AM
triggering battery 3 from an mpc	recall	Music computers	1	1st January 2007 03:59 AM
Wireless Keyboard/Mouse battery life	Kyle Ashley	Music computers	2	7th December 2006 08:34 PM

14th May 2011	#5
Acid Mitch Lives for gear Joined: Aug 2010 Location: Space is the place Posts: 1,306	The clap sounds like it needs the reverb tuned down. There is an internal pot to do this.

26th July 2011	#7
Johannes R. Gear Head Joined: Mar 2008 Posts: 62	I have the same problem, exact same sound for the clap... Did you find someone able to fix it finally ?

11th February 2012	#11
ekwipt Gear addict Joined: May 2008 Posts: 406 Thread Starter	Hey guys, my 909 got fixed and was sounding great but after moving interstate the bad sounds back but now a little worse. The clap sound is very muffled and the ride cannot be heard at all. I'll post samples in the next couple of days, but here's my problem. I want a perfect 909, so I want to sell this one, I bought it for 1500 AUD and spent 100 on it to fix it plus bout the rev ROM to fix the midi timing and had that installed so that was probably 50 bus or so. Do you think it's best to get it fixed again and sell it on eBay or locally as I feel it's probably quite fragile or sell it as is? What's the realistic price for fixing and selling and selling without fixing?