Question about Yamaha YAS-70 Front Surround System Black Theater System
This is called the "protect mode" and it does this to keep the unit from more damage, meaning that the unit has some type of damage now and if it were to remain on it will cause more damage.
Most of the time this will happen because of a bad channel in the amp circuit. On more rare occasions it is the power supply causing it. The only way to fix this problem is to repair whatever damage has been done to it.
It will take the proper tools and some electronic troubleshooting skills to fix it. If you have a multimeter and soldering equipment I can help you with this and tell you the most common places to check for problems, but it will require some minimal skills on your part like being able to identify certain parts and be able to pay very close attention to details, and understanding certain electronic terms. If you would like to try this yourself let me know, otherwise, you should take it in to a service center and let a professional check it for you. You can get an estimate first before deciding if it is worth fixing.
Posted on Nov 09, 2008
a 6ya expert can help you resolve that issue over the phone in a minute or two.
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Posted on Jan 02, 2017
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Five blinks - AKB
circuit (automatic kine bias), the timer/standby indicator blinks
for about 30 seconds then goes to the self-diagnosis function.
Something is wrong with the video. Check video out, Q705, 732, 761
and other components on the C board, also check Q218, 219, 220 on
the A board. In addition, unit could be in IK blanking, try turning
up screen A2 slightly.
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