via this auction"This is a brand-new replacement CPU board for the Korg Polysix, KLM-367A. If you are reading this listing, you are probably well aware of the Korg Polysix battery leakage issue, which in a worst-case scenario can make the original processor board irreparable. The circuit board in this listing is one of the excellent KLM-367A clones available from Jed Jorgensen. An online search should direct you to Jed's site for more info. Ebay has made it nearly impossible to add a link of any sort, sorry.
This is a premium build, with every chip mounted in machined-pin sockets, all-new electrolytic capacitors, instead of ceramic capacitors poly or silver-mica caps are used instead, and multi-turn cermet trimpots. In every instance possible, the chips and other rare components from the original CPU were transferred to the new board. Assembling the board was labor-intensive. EVERY recycled part from the old board had to be tested (I mean, it just wouldn't do to put any parts that were killed by the battery damage on the new board!), and the board has approximately 870 holes to fill with parts, and nearly that many pins had to be unsoldered from the original board. The third photo shows the process near the beginning, and the last photo shows the job complete. The board was then installed and calibrated to factory specs.
Installation: (If you are not comfortable with electronics, PLEASE get a qualified tech to install this) Back up your patch data, it will be lost during this process and need to be reloaded when done! You will need to unplug and remove the old board first (duh!). Be careful unplugging the cables, most of the connectors have been glued in at the factory, and the glue seal will need to be broken. Carefully unplug the processor chip from the original board, taking care to not bend any pins, and plug it into the new board. IMPORTANT: Do not forget to do this, the processor chip itself is the only piece you need from your original board, and is NOT included in this auction! Screw the new board into place. ALSO IMPORTANT: There will be a thick black ground wire going from the control panel to a ground point on the original board. This is the only wire that needs to be soldered, and it must be done. The grounding point is already prepared with solder to make this easy. Install the battery (included!), Plug all the cables into their correct sockets (nearly impossible to mess this up!), close the hood and play! There is no need to calibrate this board, it has already been done for you, and a different processor chip will not matter."
Bloody expensive!
ReplyDelete