Without the 4080, the voltage on those diodes could be almost anything. You may want to pull them to make sure that they're not leaky.
You should be able to tell if they're original by the solder joints.
Testing with the 4080 in the circuit and the outputs out of the circuit is less risky.
You should be able to tell if they're original by the solder joints.
Testing with the 4080 in the circuit and the outputs out of the circuit is less risky.
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