Hello, I have this Korg ElecTribe EMX1 on my table.
The story: Customer plugged DC power supply and smoke came out.
I have Correct 9v AC Power supply now.
I fixed/replaced F1 mosfet and IC20 controller and Restored 3.3v
I restored Fuse that was blown after IC20.
I had to replace one Ram bank IC30 It was shorted. (3 ohms)
Im waiting for NJM78L05UA to replace IC9 to restore +5VA
IC19 I can't find replacement. 3.3v_Smart Media is missing.
When I power up the device, LCD lights up, but nothing is showing on the screen.
I'm looking for some help to learn how to check if CPU is running and Display core.
Im thinking if I can't restore CPU and display, then there is no point trying to restore other rails.
I have attached schematics. If anyone has some tips I will be eternally grateful.
The story: Customer plugged DC power supply and smoke came out.
I have Correct 9v AC Power supply now.
I fixed/replaced F1 mosfet and IC20 controller and Restored 3.3v
I restored Fuse that was blown after IC20.
I had to replace one Ram bank IC30 It was shorted. (3 ohms)
Im waiting for NJM78L05UA to replace IC9 to restore +5VA
IC19 I can't find replacement. 3.3v_Smart Media is missing.
When I power up the device, LCD lights up, but nothing is showing on the screen.
I'm looking for some help to learn how to check if CPU is running and Display core.
Im thinking if I can't restore CPU and display, then there is no point trying to restore other rails.
I have attached schematics. If anyone has some tips I will be eternally grateful.
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