Denon avr-2106 avr-886 avr-786 avr-1906 avr-686 avr-1706 avr-486 ost-f1031 Service Manual

 

 

       

 

 

 

 

. :  OST-F1031 

 January 23, 2007 

 

 AVR-886, 

AVR-2106, 

AVR-786, 

AVR-1906, AVR-686, AVR-1706, 

AVR-486, AVR-1506, AVR-1306 

      

Countermeasure for preventing the Power Amplifier Circuit from 

breaking down.

 

 

 

 The transistor that is used to compensate the temperature rise of 

the Power Transistor in the Output Stage is incapable of reacting to the rapid 
temperature rise. Because the temperature rise is not compensated properly the 
Power Amplifier Circuit may be damaged. 
 

 
Solution:  

Please replace Transistor Q103 and resistor R101 upon repair 

and/or refurbishment of the unit. (The replacement of the capacitor and resistor is 
applicable to each channel (C, FL, FR, SL, SR, SBL and SBR).

 
 

 

Q103 (C, FL, FR, SL, 

SR, SBL and SBR) 

2SC3964, 
Transistor 

00D 963 0280 107 

R101 (C, FL, FR, SL, 

SR, SBL and SBR) 

RD14B2E681JT, 

680Ω Resistor 

00D 241 2398 913 

 

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