Hi guys, can anybody help? Went out to this double oven last wk. Customer complained that the light in the main oven wouldn’t go off, then when it did the oven wouldn’t work on any of the fan settings. Found a blackened relay on the pcb, so ordered a new board. Went back to fit it today but it hasn’t cured the fault. Have checked all elements, fans and thermostats – all ok. Top oven works fine & main oven regulates ok on conventional setting but the only thing working on fan settings is the cooling fan. Any ideas? Thanks, Wizard.