When my DSP-10 is set to receive I measure 5V at D1-A1 and 0.73V at D2-A1. I replaced R141, R142, R143, R144 thinking that they where bad. That did not lower the voltage at D1-A1 so I replaced U107. I am still seeing 5V at D109 and D110. Is there any thing I can do to try to reduce the voltage at D1-A1? -Thanks Matthew Wolf (KC9DQP)