1. Unplug the power cord from the wall and then reconnect the speaker and audio cables. I have a Sony HT-DDW840 receiver and last night I heard a little crack and it went into a "protect" mode. Running the home audio device in a poorly ventilated cabinet can trigger the protection circuit. Hi and welcome to JustAnswer, Initially, as the word "PROTECT" implies, the STR-DE835 has gone into auto-protect mode.The built-in watchdog circuitry has detected a fault and kicked in auto-shutdown to prevent further damage. Protect mode repair Sony STR-DE675 Receiver amplifier. Reduce the volume level. Consumer Electronics. Step. When the transistors go short between their collector-emitter junctions, it creates a path from the positive voltage rail to ground -- or negative rail to ground, in a split voltage system -- and the only resistor in this path is this non-flammable resistor, which goes open. If the protection mode warning doesn't go away on its own, press the reset button. The protection mechanism usually places the amplifier into protect mode when it detects a short, and during this time it prevents power to the amplifier circuitry, thereby preventing harm to the speakers and expensive amplifier components. … My goodness the internet is great. Dark Mode was introduced in iOS 13 and announced at WWDC 2019. I have a Sony HT-DDW840 receiver and last night I heard a little crack and it went into a "protect" mode. If that doesn't work, disconnect the power lead from your receiver for 30 seconds and then reconnect it. Kenwood equips its receivers with a protection mode to safeguard them. - Answered by a verified Technician. If the impedance of any of the speakers is below the rated impedance range indicated on the rear of the home audio device next to the speaker connections, the home audio device may enter the PROTECT mode. When I turn it on it just says "protect." I’d looked around the internet for solutions and most described things I’d already done, plus the usual “they all do that, throw it out” unhelpful comments. I plug in and you hear two clicks and the goes in to protect mode. My Sony STR-DA30ES Fix (18 yr/o reciever) I have a Sony DA30ES - 18 years old now (legal age to smoke knock on wood) and started getting clicking, popping, static and other noise that I could whack out of it for a time but recently started getting 'Protect Mode' and no audio. The reason the "Protection" mode clicks in is that you are trying to use more power than the amplifier can handle. It is in PROTECT mode everytime I turn it on. Your stereo receiver is going into protection mode because the receiver has an internal short, a speaker is bad or the speaker wiring has a problem, such as incorrect wire gauge or bad connections. Ensure the top of the home audio device has proper ventilation to keep it from overheating. Is there anyway to get it out of PROTECT mode, without having to change some part inside. The STR-K740P protect error usually occurs in the form of "PROTECT" flashing on the display, and this article looks into how to fix this error and bring the amplifier out of this mode. I've had the same speaker and wiring … This is normal. I was about to throw out a Sony surround sound receiver I’ve had for years because it would flash “PROTECTOR” on the display after being on for a few seconds, and I’d tried everything I could think of (cleaning, making sure no bits of wire in speaker posts, leaving off for hours or days, etc.). Tried the disconnect/reconnect of all internal connectors. Check the followings: There may be an electrical surge or power failure. I've just bought a new Denon X2500 AV receiver. Turn the volume back to the minimum setting and turn off the receiver. © 2021 Paul Higginbottom, a.k.a. Many of the problems that trigger protection mode can be resolved or at least diagnosed by tech-savvy owners, without bringing your car into the shop. They cannot both be one the same time. If it goes straight in to protect mode then your problem is a blown output transistor. Leave the speaker and audio cables disconnected. This is normal. Sony Audio Receiver in Protect mode Repair Fix STR-DG720; The repair of a Sony STR-DG720 audio receiver in the protect mode. Beznuk, Apr 30, 2011 #1. By Jestine Yong on June 20, 2015 I got this AVRX500 Amplifier Receiver with the complaint that it was going to Protection Mode. Protection mode in Denon AVR-X500 solved . When R716 is open and Q703 is short, Q705 will detect current through its base junction which starts the process of flagging the protect error. When this initially happened a month or two ago, I reconnected all the speaker wires which temporarily resolved the problem--it worked fine. Tried the disconnect/reconnect of all internal connectors. If the receiver shuts off after connecting a speaker, that speaker's wiring or the speaker itself has a problem. State of Trance 2008, Mosaik’s music… ahhhh…. If that doesn't work, disconnect the power lead from your receiver for 30 seconds and then reconnect it. If, after your fix, the receiver powers on, but then turns itself off after a few minutes, it's possible something is physically damaged inside. The audio power output design is class AB push-pull configuration, consisting of MP1620 and MN2488 pair of Japanese transistors manufactured by the Sanken Electric Company. The following was in the comments on repair slip: Discussion in 'AV Receivers & Amplifiers' started by Beznuk, Apr 30, 2011. The STR-K740P protect error usually occurs in the form of "PROTECT" flashing on the display, and this article looks into how to fix this error and bring the amplifier out of this mode. Sony Audio Receiver in Protect mode Repair Fix STR-DG720. Let the amplifier cool for 15 minutes and then switch ON to see if the message still appears. NOTE: If model-specific information is needed to complete any of these steps, refer to the instruction manual with the product. but it still says protect, push power. Reduce the volume level. See if receiver still goes into protect mode with CNP920 connected. This still happens even after all speaker wires, etc are disconnected. to Connect a TV to AVR surround sound Receiver Sony Audio Receiver in Protect mode Repair Fix STR-DG720 The BUDGET Sony DOLBY ATMOS HOME THEATER Receiver to Beat - SONY STR-DN1080 4K AV RECEIVER Review Sony STR-DH590 Unboxing/Review Page 1/2. Then finally, I found solution #2 at fixya.com’s page on this and figured I’d give it a try. Unplug the power cord from the electrical wall outlet. Unplug the AC power cord (mains lead) and then plug in the cord again after 30 minutes. I have a Sony STR-DE197 receiver. NOTE: If the A/V receiver does not display PROTECT with all the components disconnected, turn off the A/V receiver and connect one component at a time, turning on the A/V receiver between each connection, to see what component is causing the A/V receiver to go into the PROTECT mode. I have a Sony SRT-SE391 stereo receiver, I opened it up to try to fix a problem that I have been Gavin with it. Thanks for the tip. It would require a hard short across the speaker terminals in order to damage them. I have a pretty old Sony Receiver (STR-K840P). This is a home theater amplifier which immediately goes into the protect mode after power on. However, serious problems might occur if you modify the. The repair of a Sony STR-DG720 audio receiver in the protect mode. My Sony DB930 goes into 'Protect Mode' when it is turned on. I picked up the Sony factory service manual for this unit and, while it contains good schematics, little is offered in terms of troubleshooting info for diagnosing the "protect" fault. Thanks for the tip. Tutorial: Learn how to turn captions on or off when watching Internet videos from YouTube . If the issue is still unresolved, service may be required. To reset the internal surge protection circuit unplug the AC power cord from the wall for at least 30 minutes. Tutorial: Learn how to turn captions on or off when watching Internet videos from YouTube . I wonder if that relay is bad. Refer to the video below for how to remove "Protect Error" on a Sony receiver. Standard Member. The manual says I have a short-circuit problem. The rest does not fix it. Sony Music Classic artists to today’s stars, local and global. Senior HTF Member. If it goes into protect with the fuse blown that indicates the high tap is on. I have a Sony SRT-SE391 stereo receiver, I opened it up to try to fix a problem that I have been Gavin with it. Sony Pictures The hub for your favourite movies and TV shows. It says turn the receiver … … Joined Jun 24, 1999 Messages 11,571 Location NorCal Real Name John Unplug it for a while. Press the power button to turn on the stereo system. I have a sony receiver that keeps going into protect mode. This still happens even after all speaker wires, etc are disconnected. This started about 3 weeks ago. Wonder of Wonders, it worked. Update: Unit has been sold Ebay Junk unit on a Sony STR-DH710 with HDMI. sections, we look at what sometimes goes wrong when such an error appears permanently. My Sony STR-DA30ES Fix (18 yr/o reciever) I have a Sony DA30ES - 18 years old now (legal age to smoke knock on wood) and started getting clicking, popping, static and other noise that I could whack out of it for a time but recently started getting 'Protect Mode' and no audio. Sony and the Environment How we’re reducing our eco-footprint through energy efficiency and recycling initiatives. After 3 times goes into protection mode. In the following You'll have to get a more powerfel receiver to handle the loadness you so desire. I read about the grounding issue and while I found this doubtful Remove the object covering the ventilation holes of the receiver. However if the protect message keeps appearing all the time and without the speakers attached, then it is likely that there has been permanent damage to the internal components, and the unit will require repair. Running the home audio device in a poorly ventilated cabinet can trigger the protection circuit. When I turn it on it just says "protect." involves replacing power amplifier output transistors, emitter ... How to Setup Sony STR-DH800 Receiver Review. Remove relay RY920 which is after those fuses. Protect mode repair Sony STR-DE675 Receiver amplifier. PROTECTOR as soon as I turn it on. NOTE: If the A/V receiver does not display PROTECT with all the components disconnected, turn off the A/V receiver and connect one component at a time, turning on the A/V receiver between each connection, to see what component is causing the A/V receiver to go into the PROTECT mode. Switch on the receiver. If we look at one side of the push-pull stage, we see that if Q703 goes short between its collector and emitter junctions, the voltage rail would flow through the speaker and ground, however, there is R716 in the path, which will go open. Take it to a Sony approved technician to get it repaired. You can switch between the entities and … However, serious problems might occur if you modify the. To reset the internal surge protection circuit unplug the AC power cord from the wall for at least 30 minutes. Checked and found that the complaint was accurate. The most common form of short is usually user error when they short the speaker terminals, or overload it by … This is a complex piece of Japanese electronic engineering and it requires a fully qualified and experienced electronic engineer to repair it, therefore do not attempt to repair it. If the receiver shuts off and goes back into protect mode you will need to contact your Onkyo dealer. Reduce the volume level. Beznuk. Anyway, sounds awesome. Turn off the receiver and let it cool for a few hours; then try again. Tags: sony; Apr 30, 2011 at 10:39 PM . In this channel example, the non-flammable power resistor is R716 which is a twin resistor package consisting of a pair of 0.22 ohm resistors in series. Unplug the power cord from the electrical wall outlet. Refer to the video below for how to remove "Protect Error" on a Sony receiver. Currently, I have to Bose 301's and 201's and a (kinda crappy) Sony center and subwoofer. These are hardy transistors with collector current (Ic) rated at 10-A. Part of the protection circuitry are relays that disengage the speakers once the Sony has gone into auto-protect mode. My Sony DB930 goes into 'Protect Mode' when it is turned on. Jan 28, 2002 #4 of 16 MickeS. I've checked the connections over and over... even moved a few times and had to re-hook up the entire system. The repair of a Sony STR-DG720 audio receiver in the protect mode. Sony Audio Receiver in Protect mode Repair Fix STR-DG720 All Articles Posts FAQ Pages The repair of a Sony STR-DG720 audio receiver in the protect mode. Ask for free help:: home:: add a question :: search:: help:: most recent:: unanswered Search: Go : Fixed for free! No earlier symptoms, no prior intermittants. I’d already vacuumed out the inside (which wasn’t really dusty anyway), but proceeded to disconnect and reconnect every connector in there, and there’s a BUNCH. Especially if your microphone was already working fine before with the same. Ensure the top of the home audio device has proper ventilation to keep it from overheating. Free repair help Audio, Audio Systems - solve sony str de475 protect mode. I tried unplugging all tr speakers and input before turning it on and it still doesn't work. Reconnect the power cord after at least one hour has passed. solidworks step by guide , physical … How To | Remove "Protect Error" on a Sony receiver - YouTube If it is blowing the fuses it would indicate the low tap is on. The receiver will automatically turn off after a few seconds. It says turn the receiver … NOTE: If model-specific information is needed to complete any of these steps, refer to the instruction manual with the product. This is to save your receiver from burning itself out. The purpose of the protect error is to protect the amplifier components from damage should a short circuit occur. 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