Question about Yamaha RX-V690 Receiver
If it's anything like a few I have in the shop here, It a selector / preamp IC that routes the input signals to the amps thats gone buhbye
Posted on Jan 14, 2009
CLIP: red, to the left of each Gain control.
Normal indication: illuminates whenever the amplifier is driven beyond full power. The LED's brightness indicates the amount of distortion. Distortion that causes only brief flashing may not be audible.
During muting, the indicator fully illuminates. This occurs during normal "On-Off" muting.
Abnormal indication:
•Bright red illumination while the amp is being used indicates either thermal muting or a shorted output.
•If the amplifier overheats, the fan will run at full speed, and operation should resume within one minute. Allow the fan to run, and make sure the amplifier ventilation is adequate.
•A shorted or overloaded output circuit will cause excessive Clip flashing and possible overheating.
•If distortion is audible without a Clip indication, the problem is either before or after the amplifier. Check for damaged speakers or overloaded signal source. The amplifier Gain control should be in the upper half of its range to prevent input overload.
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Thank you for your quick response and suggestions, however I do not have the schematics and thus unable to determine locations and what the voltage levels should be.
Thank you for your quick response and suggestions, however I do not have the schematics and thus unable to determine locations and what the voltage levels should be.
Hi Girociclo.
Any luck finding this information?
Appreciated. Gk
Sounds like you have seen and repaired this problem in similar units. How can I get the selector / preamp IC and/or the part number for my model? Cheers
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