Denon AVR-4520

111
4.2. Power AMP (8U-110130-10)
No sound is output.
The protector operates.
Is the power transistor open or short-
circuited?
DHCT-C3
Is the emitter resistance of the power
transistor open?
0.47Ω
Is the base resistance of the power
transistor open?
47Ω
Is other transistor trouble?
Is other resistance trouble?
Turn on the power, check that voltage of the section is normal and that idling electric current is
owing.
Replace the power transistor.
Replace the transistor.
Replace the resistance.
Replace the emitter resistance.
Replace the base resistance.
YES
YES
YES
YES
YES
NO
NO
NO
NO
YES