David, Does the MWO do this as soon as you plug it in ? Is this a old MWO ? The reason I ask, is because I've seen some old MWO's that the fan and light run all the time when the unit is turned on. It only heats when the timer is set. When it finishes, the light and fan stay on until the off button is pressed. But I can't remember the brand, model, or year. Christopher Barnak, CET Norfolk Public Schools School Plant Facilities 966 Bellmore Ave. Norfolk, Va. 23504 Phone 757 628 3385 Fax 757 628 3392 cbarnak@xxxxxxxxxxxxx >>> RobinsonElectronics@xxxxxxxxxxx 11/3/2004 10:05:46 AM >>> Can anyone of you Microwave Oven Techs. help us with this unit, fan & light will start running by itself, but not the h.v.? I did seem to trace it to "I think" a small transistor Q4 on the control board (can't find any cross reference for it or a sub). It's marked N411-92 on the transistor, location Q4 on the control board. Measures bad with a standard transistor tester, but don't know the type, or values? Can anyone help with this one? Thanks. David. Robinson Electronics 1075 Sweeten Creek Road Asheville, NC 28803 Ph./Fax. 828 274-3787 Toll Free. 1-888 ROBELECT www.robinsonelectronics.com www.robelect.com Mailto: RobinsonElectronics@xxxxxxxxxxx ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/ ----------------------------------------------------------------------------- Lost Password: http://www.tech-assist.org and select "Login Problems?". Email Archives: //www.freelists.org/archives/techassist/