OK. I got the new fused resistors in. Powered up with DBT, got a quick flash of light through bulb which quickly faded away (like I would expect), but the speaker relay did not close. Hmmm. So I disconnected DBT and powered up again. This time, the relay closed. However, now where I was getting 35 volts before resistor replacement at the phono board, I only get 10 volts! Didn't see THAT coming. I I tried running my iphone through the auxiliary input to see if I would get output here. No output through aux. In fact, with a source connected to aux, the speaker relay would open after 5 or 10 seconds. I surmize that it is not an overvoltage issue, but instead is not pushing enough voltage to the relay to maintain in closed position. Doing a quick once over on the power supply, it looks like there is at least one bad resistor. My plan is to do a voltage study on the power supply and see if I can figure out what has gone bad. I'm guessing that a power supply rebuild is in order.