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which makes a little excited, because it is not what IC7107 bad, D board failure, further testing is to detect IC7102, voltage measurements for each foot are normal, and there is a corresponding change in tone, while the posterior pole of the fault is it? ? ? Further investigation, D13 voltage is normal, and later find out is normal, with the substitution method to prove deflection CY-B and CY-R Swap is normal. NPgservice manual download site
Then consider the deflection on the ground is normal? A test
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