My Countax 2050HE has a problem .Its just had a new pcb fitted . Everything works tickety boo but after cutting today it suddenly stopped . So i turned off the key and back on again and it started but as soon as i engage the blades after random seconds it just stops again . I thought it might of been overheating , but no . Filters are all clear everything is cool , but it just cuts out when the blades are activated . Any ideas appreciated . Cheers .