Onkyo T9: -6.4 VDC on the right channel!

Discussion in 'Tuners' started by EvanF, Sep 3, 2017.

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  1. EvanF

    EvanF AK Member

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    I get very quiet output on both FM and AM on each channel, and the aforementioned voltage on the right channel, which drops to -4.5 VDC on both channels when I switch to the recording check switch (which puts out a distorted sine wave when switched on, which is supposed to happen). Is this the fault of the HA 1156 chip? There are two transistors on each channel right before the output, which test fine. Nice tuner, recapped it but should have tested before starting work. I double checked the capacitor values. I also tested from voltages from the schematic, looks good so far.
     
  2. KiM3Ce

    KiM3Ce AK Subscriber Subscriber

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