[sdiy] UPD8048C question

[sergio koval]

Hi all...

I´m repairing a Korg Polysix and I found that its problem
it seems to be the 8048 micro.
I put the 8048 of another Polysix and it works perfectly,
but, when I put a new 8048 (exactly a 8048H) it doesn´t work.

I don´t know too much about microprocessors, because
I only repair absolute analog keyboards.

Questions:

Is the 8048H an incorrect substitute for the D8048C-345
(exact number on Polysix chip) ?
Its necessary to read some Korg memory stored in a 8048
from another Polysix and to record it in a new one ?

Any tip will be welcome.

Thanks

Sergio

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