Hello everyone; I'm very new at this forum (in fact this is the first forum I am joining) - I'm having a very big problem with my Brother PR600 - Wiper Error - I had a service man come over to check the machine; it was working when he left on Friday; now it started again - it keeps jamming and always Wiper Error - the thread is not caught - the service man changed the motor, the sensor, the main board - still not working - can anyone give me an idea what could be the problem - the service man is coming back tomorrow night but I am not convinced my machine will be working when he leaves again. Oh and by the way I have a second PR600 which was in perfect working order - the service man oiled it - guess what happened??? WIPER ERROR!!!! My second machine is also not working. HELP!!!!!