Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

Hello good people from polysix support group.
I have one pretty annoying problem with my beloved polysix and I was hoping if you could help me.

I got it back from repair few weeks ago.
I had the notorious battery problem, and the tech guy fixed almost everything except one thing.

He replaced the chip which I think is controling the memory, and it is draining too much power.
We measured almost 30mA, which he says is way too much.
So instantly, when I put the fresh Lithium battery, the voltage goes from 3.3V (or something) to 2.8V, and it takes a few days for the battery to be completely depleted (the synth is off all the time).
He is 99% sure it is that chip that is causing the problem,
and he suggests me that I find an original one, because he was unable to.

The chip is the replacement for TC-5514, it's 2114 I think.

I have checked if D15 diode is facing the right way, if it's not then the battery would be routed to ground with 100 ohm which is something about 30mA..
But it's facing the right way.


I looked at the datasheet for the original TC5514 memory chip and it says it needs up to 180mA in operating and 10mA in standby. The 2114 also uses 10mA in standby but 100mA in operating mode, so it's a newer and more efficient chip. It doesn't make sense that it's this chip that's making the problem.


Thanks in advance guys.
Cheers,

Milan