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Went into Protect mode, already tried the video 1 while powering on..nothing. Has something shorted out? is it worth fixing or time to uprade? Thanks

I have a Onkyo TX-Sv535 receiver/amplifier. While playing a dvd I noticed a "Protect" message on the front panel. Then all of a sudden..lights out. Now it will turn on but the front panel is blank. It's as if I need to ht a reset somewhere. I've tried the Video 1 while powering on..nothing. Has something shorted out, is it garbage now or a cheap and worth while fix or time an upgrade? thanks

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You need to send to a repair shop maybe the audio amolifier IC are fried

Posted on Apr 16, 2009

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My Harmon kardon is stuck in protect mode


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DENON UD-M30 CD Player is displaying the word PROTECT and will not function. Any ideas how to fix this problem? Many thanks.


HI:
Usually when a receiver goes into protect mode, there are several reasons, One is there is a bad speaker connected to the unit, this will cause the unit to to into protect mode, try disconnecting all speaker from the unit and turning it on if it does not go into protect then one of the speakers are bad. Another reason is the power output Amplifier IC is shorted inside the unit. Another reasons could be that speaker wires are touching each other and causing a short. Disconnect all unit connecting to the unit and try turning on, if it stays on and no protect then connect them including the speakers one at time until you determine which is causing the error. If it goes into protect with nothing but the unit on then the Output IC is bad and the unit needs servicing.

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Listening mode functions lost one by one


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Jun 09, 2009 | Onkyo HTR500 Receiver

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I have a jvc stereo and its stopped playing music and went into protect mode what does that mean? is there something that i can do for that with out paying lots of money to get it fixed and just do it my...


Usually "protect" mode means it has either

1. Overheated (a thermistor on/near the cooling fins for the audio output transisitors has indicated that the machine is running too hot). This is usually solved by turning the unit off for 30 min.

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2. Some circuit inside the unit has indicated an error condition, turning your stereo into a doorstop.

Thanks,
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Protect Mode on Kenwood KDC-MP335


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Stuck in protect mode


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Unit goes into protect mode


Not unless you know how to troubleshoot solid state electronics. If you disconnected the speakers and the unit still goes into the protect mode, most likely you have a short in one of the power output stages. Good Luck

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Marantz SR5000 Protect mode


The Marantz SR5000 and others of it's make, design type, and year group are prone to this problem. Many such units can be reset by pressing a sequence of three buttons with sporadic results... the SR5000; however, does not provide any such option. If the "Auto protect" mode comes "on" then you know it's not a simple power supply "fuse" problem that can be fixed for a dollar by opening the case and replacing the glass fuse with one of the same rating value that is stenciled on to the power supply circuit board. (Easier than trying to read the old fuse.) If you can get the schematics and know a bit about replacing electronics parts using a low-power soldering iron, then you might want to take a shot at fixing it; otherwise, it's time for recycling. (Tip: Look for discolouration on a part on a circuit board first, this indicates overheating and a possible short. Then trace the schematic circuit for the "Auto Protect" circuit to diagnose which integrated circuits is at fault.) Typically, it costs more to fix it in a commercial shop than it's worth as someone has to pay the cost of benchtime diagnostics... the repair part is fast once the faulty parts are discovered. There are free sources on-line of the service guide for this receiver; however, downloading the plethora of rar files to assemble a complete manual is a challenge.

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