Haier 48E2500 - Audio and Function Troubleshooting; No Sound Troubleshooting Guide; TV Video Function Troubleshooting

Service Manual
Model No.: 48E2500
- 50 -
9ǃAudio Trouble˄No
sound)
No sound
Check the AMP power
Check the power supply circuit
Check if PIN1 of the AMP chip
voltage is normal
Check the control circuit
Check the input signal
Check the circuit from AMP to the jack
Check the output signal
Check the circuit from U1
to AMP
Check the circuit between output jack
and AMP chip, Change AMP chip
N
Y
N
N
N
Y
Y
Y
TV can’t search any
channel/no picture
10ǃFunction Trouble˄TV video˅
Check input RF signal
Check the RF source
Check tuner power
Check power supply circuit
Check if IIC work
Check IIC circuit Check IFP/IFN output signal
Check tuner and
peripheral components
Check the circuit from
tuner to U1(MSD3393)
N
Y
N
N
N
Y
Y
Y