08TV027
KDL-20G2000, KDL-20S2020, KDL-26P2520, KDL-26P2530,
KDL-26U2000, KDL-32P2520, KDL-32P2530, KDL-32U2000,
KDL-40P2530, KDL-40U2000
BC
Subject IRIS
Audio Dropouts with Wireless Headphone K553
SYMPTOM
Audio dropouts may occur when using a wireless headphone.
CAUSE
Output circuit not working properly if the load impedance exceeds 500 Ohms, due to the decoupling capacitor
which cannot be discharged on time. As a result, the DC protection circuit switches off the audio amplifier.
SOLUTION
Add a 330 Ohms resistor in parallel with the load to enable charging and discharging each time the power supply is
switched ON / OFF.
Description Part number
Resistor, Chip 330 1-216-815-91
For the exact mounting position, refer to the schematic of the H2 board on the next page.
