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my sony stereo goes to protect mode when i turn the volume

Customer Question
up just a little -...
my sony stereo goes to protect mode when i turn the volume up just a little - how do I fix
Submitted: 6 years ago.Category: Consumer Electronics
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Answered in 6 minutes by:
10/25/2011
Electronics Technician: PBMFIXS, Trouble shoot and Repair replied 6 years ago
PBMFIXS
PBMFIXS, Trouble shoot and Repair
Category: Consumer Electronics
Satisfied Customers: 2,066
Experience: 9 years as a licensed ham radio operator, Trouble shoot and repair all types of electronics
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Hello, and thanks for your question! My name is XXXXX XXXXX I am happy to assist you today!!

Does it work ok if you move the volume up more than a little?? what type of controller? slide button, or knob??

How old is the stereo??

Thanks again,

Charles

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Customer reply replied 6 years ago
It's 8 years old with knob controller. PROTECT flashes on screen when volume reaches between 34-40. It's a Sony Digital Audio/Video control center FM Stereo/ FM AM receiver strk740p
Electronics Technician: PBMFIXS, Trouble shoot and Repair replied 6 years ago
It only does it at this spot?
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Customer reply replied 6 years ago
Works fine until I go over 35 on volume button and then flashes protect mode
Electronics Technician: PBMFIXS, Trouble shoot and Repair replied 6 years ago

I am going to opt out of your question so that another expert may help you better than I can,

Thanks,

Charles

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Customer reply replied 6 years ago
Thanks for trying
Electronics Technician: Dan, Master Electronic Technician replied 6 years ago
Dan
Dan, Master Electronic Technician
Category: Consumer Electronics
Satisfied Customers: 1,904
Experience: Over 40 years experience in the service and repair of all types of electronic equipment.
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Greetings, the protect mode is designed to prevent any possible further damage from occurring when there is a problem. Most likely the audio output of one of the channels is drawing too much current at higher volume levels. This can be caused by problems with your speaker wires, speakers or in the electronic circuitry of the audio output stage itself. Depending on how many speakers you have, you should be able to adjust the Balance and Fader levels to isolate one speaker at a time and then raise the volume up each time. That should help you isolate the problem and then examine your wires and try swapping speakers to see if the problem changes to another channel.

If you need additional assistance, please let me know.

Dan
Dan
Dan, Master Electronic Technician
Category: Consumer Electronics
Satisfied Customers: 1,904
Experience: Over 40 years experience in the service and repair of all types of electronic equipment.
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Dan and 87 other Consumer Electronics Specialists are ready to help you
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Dan
Dan
Dan, Master Electronic Technician
Category: Consumer Electronics
Satisfied Customers: 1,904
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