Yamaha reciever will not power on

If the receiver is completely dead, the problem could be as simple as a blown fuse. If there is no visible fuse holder on the back panel, you'll need to remove the cover. There should be a circuit board near the rear of the chassis where the line cord attaches. You should see a small glass fuse held by clips on the circuit board. Visually inspect it for a break in the small wire inside. Alternately, check it with an ohm meter. If the fuse is blown, replace it with the same amperage fuse rated for 250 volts. (The amperage is engraved on one of the metal ends i.e 0.5A). Before replacing the fuse, do a visual inspection of the other components on the circuit board looking for any signs of burning or overheating The over voltage may have damaged other components, in which case you'll need to take it in for service or scrap it. Most Yamahas have a separate standby supply. If yours has this, chances are pretty good the damage is limited to this area. If the main supply is damaged, it may not be worth fixing.

R Hold,

Do you know the the pin out / diagram for these receivers? I have an HTR 5940 and I have no speakers plugged in and it shows "check speaker wire" and then will not power on at all. I can hear the standby clicking. There is no visable capacitor damage or signs of overheating. The fuse is good.