If so which replacement board is best option?
https://folgertech.com/collections/ardu … 88-drivers
https://www.amazon.com/KINGPRINT-Contro … &psc=1
That is a very good question. above are two inexpensive options you will have to figure out which on fits into you printer best.
as far as connectors ramps uses DuPont connectors and IIRC mks uses jst connections
this site gives more board info and comparison
https://3daddict.com/mks-gen-v1-4-mainboard-controller/
If doing the above will the printer ever be as performant and reliable as say a $200 creality printer from aliexpress?
First of all I personally would not purchase any printer from ali express. it is at best a gamble a crap shoot if you will.
if you want good quality purchase from a reputable dealer in the usa.
That said the creality does have a good rep.
you can buy an Ender 3 from Wal mart free shipping for $199
https://www.walmart.com/ip/Creality-3D- … 0302008005
the press you have it seems people either love or hate . some have tweaked them with excellent results. Others have been frustrated to the point of giving up on them. there were a few folks on this forum looking to buy them if you decide to give up on this unit.
As far as your board the open connectors appear to be jst type but it appears the motors are connected with something else. Possibly carl can id them . You may need to get a connector kit and set of connector to upgrade change the board.
Info here on where to get the materials.
https://3daddict.com/3d-printer-wiring/
The choice to change the board or sell the printer you have and start fresh is only one you can make.
Economically it may not make sense but if you one to not walk away from a challenge and always want to learn something new it may make sense. If you like to tinker and stay on top of the learning curve it could be the right choice.
The other thing you need to consider is this printer was made for the consumer market. It is not designed to be upgraded and tinkered with like many kits are. these are a few of the pros and cons. ultimately your dime your call.
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