Sujet Perte de signal sur les cannaux gauches (bus et Master).

Hey , all lovers of analog mackies -
They are unique , the design and quality is unbeatable ! the only deffective part are the damned ribbon cables .
don´t waist more time and check this :


Solution for Ribbon Cable Troubles
Searching for a solution for recurrent ribbon cable troubles in my Mackie 32:8 Analog Mixer , I found a secure way to eliminate bad contacts .
The traditional cleaning methods never gave me a result like now I´ve had a different idea.
Have you all tried to clean brass objects with isopropyl alcohol or freons ? It doesn´t work.
Even abrasive preparations are faulty .
The solution is acid attack , like the dentists use to prepare a tooth restoration .
So , if you use VINEGAR , lemon juice , or a solution of Aspirine ( AAS acid acetyl salicilic ) or Ascorbic acid , the brass objects wil be cleaned totally in 02 hours , becoming completely golden-like-new.

So , these are the directions to WORK SAFELY :
1. unmount the mixer , taking out the bottom .
2. relocate the mixer over the legs , taking EXTREME CARE for the circuits to be away of any contact with the legs .
3. lay on the floor , and disconnect all ribbon cables from their sockets .
4. put the ribbon cables´ connectors immersed in WHITE VINEGAR ( ALCOHOL VINEGAR ) inside a pre-cleaned reccipient .
5. then , take 02 different clean glasses , one for vinegar , the other for Isopropyl Alcohol – DON´T be confused – must be different color or sizes .
6. take 02 different medical syringes
7. filling the first syringe with ALCOHOL VINEGAR , you will carefully inject this liquid , pouring over all the tiny pins of the connectors . Be sure to have un the other hand a big absorbent cloth , to collect the acid when it falls ( take care of your eyes )
8. wait 1/2 hour , repeat this operation , and then wait 2 more hours , enabling this acid-attack be effective and definitive , cleaning all oxidations , grease , smoke residues , etc.
9. Now it´s time to wash generously the ribbon cables with water , then wash their connectors with lots of isopropyh alcohol . Dry them with an electrical hair drier .
10. Finally , take the second syringe , and the glass tith isopropyl alcohol . Fill the syringe , and pour generously the isopropyl alcohol inside the boards´connectors . Don´t forget to spill it around the connectors , to remove any trace of acid on the boards .
11. dry the boards with the hair drier ( NOT TOO HOT !!! )
12. reconnect everything , and .... VOILÀ ! you´ll have your mixer free of an OLD AND RIDICULOUS PROBLEM .

Special thanks to the world-famous and already legendary brazilian cleverness for improvisation and bizarre solutions .
guilherme arantes

Note : visit my site : www.planetaagua.net
and find an incredible project .

take care , folks !!