Ronda 50-51-52

[Specializedjim]

Hi all. Hope everyone is keeping well. 
 

just a quick question regarding a Ronda 50-51-52 movement where the chronograph seconds recorder has stopped working. 

I have had a quick look and everything seems to be ok so I guess it’s the circuit board at fault  

from my research it appears parts for this movement are scarce so does anyone no of anywhere it’s possible to get spares for this movement 
 

many thanks.