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Have a teac amp and dvd / cd player moved house plugged in and now amp makes clicking noise and displays "protect" ?? tried resetting as per manufacturers instructions ............still no joy ?

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  • michael5_78 Mar 13, 2009

    Have the same problem with the AG-L800 receiver, First sometimes there was a clicking noise from the relay, then it started showing protect warnings on the display specially with high tempratures outside. Also the unit produces some cracking noise when no signal is put on the digital input. Unit has been repaired but sometimes still starts clicking when switching on, protect error is gone though,


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Protect mode happens when the amp detects a problem internally and shuts down to prevent further damage. The most common cause of this is shorted output transistors. Without takeing measuremetns inside the unit, I can not state the specific problem, but a repair for this is relatively simple. Expect a cost of $15-$40 for parts plus the local labor rate.

Posted on Mar 28, 2008

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Denon AVR-3801 lights up,makes rapid clicking noises when amp tries to turn on. Clicking stops but unit doesn't play & sometimes the unit turns off. Occurred after lightning storm. What to do to fix?

Probably damaged by power surge. If you do not have experience diagnosing and repairing electronic circuits as well as having access to schematic diagrams then this is not a repair for you. Failure to replace all damaged components may result in damaging new parts.

Aug 16, 2016 | Denon Avr-3801 7.1 Home Theater Surround 7...

1 Answer

How can u tell if your internal speakers are blowed?

Hi Patricia,

You may need a professional cleaning of all the switches internally. If you are up to it. Compressed air with an electronic aerosol cleaning solution is the first approach. Over time these parts develop oxidation. The voltage levels are small and the signal cannot be generated.You need to know what too clean, most are visible. You can also look for internal fuse protection. Make sure when the cover is removed to pull the power first. Some higher end Amplifiers provide protection. You will need a digital multi-meter or equivalent to test the fuses.

So before doing all of that. There is a reset switch. It is located between the speaker switches on the face of the receiver. At the top and in the middle left center of the display. Not at the speaker buttons on the left.

That function may be tripped. Reset it twice and try testing with different speakers if it fails again. It may trip instantaneously if there are abnormal voltage levels present in the circuit that arouse protection.

I have located and offer you the Manual PDF. Go here first and try the following. On page 8 in the manual. Titled, " Name of each Control" (D). There is a location diagram for you to observe. Please take some time and look this over.

Finally, if you need someone to talk too. The You Tube Video has an outlet store tied to it that offers live help.

TEAC AG 790A AM FM Stereo Receiver

Good troubleshooters always take a problem apart one step at time. So go for it. I know you can do it. Fare. Well.

Jun 20, 2014 | Teac AG-790 Receiver

1 Answer

Receiver turns off after DVD is turned on. Clicking noise. Check speaker wires

It's a issue with alot of these Receivers I personally had this issue on my Receiver. the issue is a ground Fault the protection mode for over current in some of Yamaha's and HK receivers are the Two main Relay's if the Ground inside the amp is lose or is causing a Ground Loop this will happen. as you turn on the DVD there is a slight leak of Positive current tru a bad Capacitor and Resistor on the DVD player causing the Ground to send a instant burst of -Vcc to the Amp's ground setting the Protection mode on. but because it's not caused by the Receiver it self sometimes it looks like the Amp just shut it self down. In better words Try to Ground the DVD before you hook up again. use the Outlet Ground also if you use a 1K resistor on the ground wire it will help to keep any noise from coming in. Let me know. Marcelo Good Luck.

Aug 06, 2011 | Yamaha RX-V663 Receiver

1 Answer

I own a panasonic radio/cd player. It says dvd audio advanced progressive scan on the top of the unit. When i turned it on the display screen displayed hello but cut off and said f61 and the power cut off....

F61 usually means the amp has detected a short or a severe microprocessor error.

Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Apr 04, 2011 | Panasonic Audio Players & Recorders

1 Answer

My receiver displays "Protect" shortly into playing a CD. I do not have my manual anymore and don't know what this means.

Check Teac's website; they probably have downloadable manuals there; most all manufacturers have them.

Dec 18, 2009 | Teac AG-D9200 Receiver

1 Answer

Sony STR DE845: rear speakers not working, three fronts are OK.

The rear amp is malfunctioning (duh). Take it to a tech for a real diagnosis.

Sep 05, 2009 | Sony STR-DE845 Receiver

2 Answers

TEAC AG-D9100 freeze

Always be that legend when the audio amplifier IC damaged

May 08, 2009 | Teac AG-D9100 Receiver

1 Answer

Just bought refirb. Onkyo 805, hooked up front l&r plus sub and getting no sound. I set up am and fm as per manual and connected a cd changer thru the cd in via rca cables. Radio shows a signal but no...

After few sec when you turn on your receiver did you hear a click noise ? if yes your receiver is OK not in protection mode if no click noise is output protection in that case you must return where did you buy for service and update firmware a lot of update
However you can reset your receiver and debug the DSP section ( digital signal processor ) as follow
To reset
1. Press and hold down VCR/DVR button, then press STANDBY/ON button when the unit is Power on.
2. After " Clear " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.
Now turn back on and check if it work or not and make sure check input mode such as analog or coaxial or optical input if stil no sound then debug DSP as follow
To set in DSP debug mode
1. Press and hold down DISPLAY button, then press STANDBY/ON button while the unit is powered ON.
The version number of m icroprocessor is displayed only for 3 seconds.
8 1.05/07903A
2. Press TONE+ button within 3 seconds above, the version number of 1st DSP is displayed.
DSP 1st:
3. Press DISPLAY button while the 1st DSP version is displayed. The status of DSP and DIR will be displayed.
FFFFFF0 0 000
To exit
Press STANDBY/ON button.
Then unplug the unit for 30 sec then plug in it should work now if not you need to return it to 1 of the service center Onkyo in your town to repair it
Good luck

Nov 30, 2008 | Onkyo Audio Players & Recorders

4 Answers

I have a Pioneer VSX-D912 Receiver. All of a sudden his evening, the unit starts overloading and shutting down. This only happens when choosing dvd option or cd. When using cable option, everything fine. I...

If the Cable works fine, and the DVD does not, then the Receiver is most likely not overloading and shutting down. You don't mention how your DVD is connected, but I'm going to guess it's with a fiber optic cable. In that case there's a very high likelihood that the cable is either not seated properly or the fiber optic transmitter in the DVD is intermettent.

Start by removing the fiber optic cable from the DVD and Receiver and switching ends. Use little compressed air in the connectors to blow out any dust. Do not use "lung-power", as the moisture could cause problems. Sometimes the laser connections just line up better, especially with inexpensive cables. If that doesn't help, try another fiber cable. Since they are glass fiber, they are subject to crushing and cracking from being kinked or bent too sharply

If that doesn't work, try the coax digital connection or analog audio connection between DVD and Receiver.

If you are not using the fiber connection, use the same logic: switch to another set of outputs from the DVD, and another set of inputs on the receiver.

My money is on a bad audio cable first, a bad transmitter in the DVD player second and a bad receiver a distant third option.

May 11, 2008 | Audio Players & Recorders

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