How do I reset Yamaha rx-a4730 it won't turn on just blinks Manual says it is in circuitry protection mode

SOURCE: RX-V800 shuts off after 7 seconds turned it on, what should I do?

Can you post that diagram here? Or you can email it to me. I can't make any promises, But Im glad to help, I have done much board work in my time, and this one just sounds interesting. L8R

SOURCE: Yamaha rx-v995

I'm in the same boat w/ my v995 - it has a bad volume motor and its $150 for the part. You want to sell your v995? Adam

Electro Med Services

• 6694 Answers
• Posted on Feb 17, 2011

SOURCE: my rx-v367 does not power

hi,

AV receivers shows protect mode , when there is a hardware fault in side it. Its a warning that some thing is wrong. Is there is any standby light. If not check the AC fuse.
Normally AV receivers show this when any of the output amplifier get some problem. there are five amplifiers in this AV receiver. May occur when the output diver transistors of any of the amplifier become shorted. if the output transistor get shorted this will lead to flow of current through the speakers. To prevent this there is a protection circuit for each channels. One combined output of this protection circuit is connected to the system control. when the any of the output amplifier fails, the protection circuit detects it and switch of the speaker and sent data to the system control. when the system control get this data it will give a warning to the customer through display that PROTECT.
First of all remove all speaker connections from the amplifier and powerup the amplifier. If the amplifier turns ON then, then any of the speaker have some problem.
If not You have to check the amplifier.
for that you need digital multimeter,soledring iron screwdrivers etc
open the amplifier , then power it on. connect the negative terminal of the multimeter any where in the chase( metal body of the amplifer). then connect the positive terminal to all the output transistors emitter pin one by one . the voltage should be bellow 0.5V. If any of the emitter of the transistor shows voltage more than 0.5V., then that amplifier stage is faulty. Remove the transistors and check it. if it is shot then replace with a new one.
after replacing the transistors do not power up the amplifier directly from the main. You have to put a bulb of 60 watts in serial.
You can do this easily remove the mains fuse. put the bulb in a holder. now you have to wire from the holder. connect one of it to the one end of the fuse holder and the other wire to the other end of the fuse holder. Why using a bulb is, if there is any further problem in the amplifier stage on which the transistors replaced, there is a possibility of the new transistor get damage. if we use a bulb in serial with its mains supply ,when any overload in the amplifier occur the bulb will drop the current, by lighting itself.
After connecting the bulb in serious power on the amplifier. watch the bulb. It should light for one or two second and go dim . if so check the display, is there is protect mode is on or not . if not and come back to normal operation ,then remove the power , remove the bulb insert fuse and check
connect the power and check.
If the bulb shows bright light then there is some component also faulty in the same amplifier. after removing the power you have to check again the amplifier stage of which the transistor is replaced, for any other faulty components.
ok

Homer Napter

• 66 Answers
• Posted on Jun 23, 2011

SOURCE: Power went out at house....

yes it could be... but try to unplug the unit for 30 min. after 30 min try to plug again and turn on. check if the problem is solve. if not and if its under warranty just bring it back to the store or in the authorized service center. because there is no serviceable parts inside the unit... ty

SOURCE: How do you reset the

If you are referring to "protect mode", there is no reset. See the link below for an explanation of protect mode. Specifically for your unit, should you find that the outputs are defective, you can expect a parts cost in the $50-$70 range for the repair. Please update this with any other questions you may have.

Thanks,
Dan

Link: http://www.fixya.com/support/r5390728-protector_means