I am trying to fix my recliner chair, it is a two motor job with Dewert hardware and electronics. I have narrowed down the problem to two burnt out relays (removed and marked by large red circles on pcb). I also see that the 2 protection tr's going across the relays coil (I think) are damaged so suspect they have exceeding their duty cycle / time of just 2 mins in 18 mins - probably by my grandchildren using my chair as fairground ride.
I would like to know the chips proper identity and what it exactly does (data sheet etc) to help me draw up a circuit diagram for future needs (and to keep my brain busy).
I know the inputs come from the hand controller (4 for up/down of back and feet) and have traced those but would like to know the inner workings.
I think I have traced the 6CW on the tr's to possibly BC817 transistors and they are in a SOT23 package I believe.
Any help would be most welcome indeed.
I would like to know the chips proper identity and what it exactly does (data sheet etc) to help me draw up a circuit diagram for future needs (and to keep my brain busy).
I know the inputs come from the hand controller (4 for up/down of back and feet) and have traced those but would like to know the inner workings.
I think I have traced the 6CW on the tr's to possibly BC817 transistors and they are in a SOT23 package I believe.
Any help would be most welcome indeed.