I have a Machinedrum mki which has stopped working. My colleague (who happens to be an electrical engineer) has checked it out and says that it is down to two faults.
Bad resistor at some level of the board or the motherboard.
This leaves me with the question… is it possible to purchase a Machinedrum motherboard nowadays?
I meant that either it’s one of the resistors or it’s tge motherboard it self. And if it would be so unfortunate that it is the motherboard. Is it then even possible to buy a new one in this day and age?
A resistor is really simple to mesure…only, before its soldered in a circuit with other component. Once its part of an electronic system , you could nt check the resistor accurately…
I’m afraid not many people fix things these days. I don’t know anyone younger than me (I’m 55 BTW) who has any interest in general electronics. This forum will not be the best place to ask to get things fixed.
You’ll need a schematic and a load of kit, meter, 'scope etc.
You’ll need to know how the circuit functions and what the components are for.
You may have someone in your area who has the skills.
The fact someone has said, ‘Its a resistor’ seems a bit ‘unknowledgeable’ at best.
Could you provide a high res image of PCB with and indication of ‘Faulty resistor’?
I have my co worker who is an electrical engineer in the automotive industry check it out.
He first checked the psu, which was fine, checked the battery, which was finE. He tinkered some and managed to get the screen to light up but the firmware did not boot.
He mentioned something about a resistor and I probably misinterpreted that since I know jack about electronics (mechanical engineer here).
I trust his judgement cause I know he has done good work. In this case I don’t see how knowledge about synthesizers would help him, since he’s trying to get the damn thing to boot up, not look into anything else.
That makes a bit more sense as it will have nothing to do with any ‘resistor’ unless it’s either completely missing or burned out. Resistors don’t go bad, ever, however semiconductors do, capacitors too in some cases. Without actually seeing the PCB I can’t advise any further. Your man seems knowledgeable enough.
paulkeeley
I unplugged and re-plugged the power supply board (both connectors to logic and output board and tried again and it powered up normally!
a very ‘convenient’ restart