I have my centaur working fine with either an alltek MPU board or an original -35 MPU board from another machine. But when I plug in the original -35 MPU board, it all works apart from a lot/all? the controlled lamps flicker quickly. (both on the main lamp driver board and on the aux lamp driver board).
The lamps are LED's and I've installed the LED flicker fix kit to the main lamp driver board - so it's not the usual led flicker issue..
Given it all works fine with either of the other MPU boards, it's a problem with this MPU board itself.
I'm suspecting some sort of timing issue, so looking at the circuit and components around the 555 timer, and the zero crossing circuit - with the hex invertor 4049 ic?
Am I on the right lines?
Anyone had this same issue before please?
Many thanks,
Alan
The lamps are LED's and I've installed the LED flicker fix kit to the main lamp driver board - so it's not the usual led flicker issue..
Given it all works fine with either of the other MPU boards, it's a problem with this MPU board itself.
I'm suspecting some sort of timing issue, so looking at the circuit and components around the 555 timer, and the zero crossing circuit - with the hex invertor 4049 ic?
Am I on the right lines?
Anyone had this same issue before please?
Many thanks,
Alan