Question about Roland Mc-909 Sampling Groove Box System
The keys don't work what should I do
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Posted on Jan 02, 2017
SOURCE: headphone jack output
The same problem here. I solved it like this:
You must open the device. There will be a PCB with outputs and inputs. You must must detach it by removing screws on outside and then disassemble the PCB from two plastic pins to get the PCB rotated (I used plice to detache it one by one) and the conections of jack socket visible. In my case one od the lanes to the hot pin was broken. I checked that with Ohm meter 'cause it wasn't clearly visible with an eye. So having the PCB more or less secured I started to clean the lane a little bit to have a chance to put the solder layer near the pin and breakage. Get some really precise soldering device. It's a precise job. Do not overheat the diode which the lanes goes to. After placing some of the solder I checked the new connection by placing a jack into the socket and Ohm meter once again. All was perfect and working after assembling. Piece of cake.
Posted on Aug 22, 2008
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