Originally Posted by
djackson854
We have a Mitsubishi CX-20 that has a U700 alarm. The manual says this is a bad power supply. I have checked all the power supplies and fuses. One 5volt supply is not coming on but the 100Vac is not being supplied to it. When I "hot wire" the 100Vac the supply comes on OK; but I still have the alarm and it won't clear. I suspect a logic board problem is causing this. Mitsubishi tech support won't talk to us unless we send them big money first, the machine is not worth all they want. Has anyone seen this problem before?