Question about Sony STR-DB780 Receiver

1 Answer

Auto protect often cuts sound, when it's not particularly loud. Is there a way I can switch it off, or set the limit to higher?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Sony Master
  • 1,114 Answers

No, the receiver is protecting itself from damage. If you have it in a cabinet, make sure it's getting plenty of ventilation. If you have not cleaned out the inside with "dust off" do it. Dust is like a blanket and heat is the second leading cause of component failure. Secondly, check your speaker wiring, make sure you don't have excess braid hanging out of the terminals, if one braid touches the other terminal, it won't immediately shut down, however, as soon as you turn it up your increasing the resistance and voltage, therefor causing it to go into protection. That's the number one cause of failure in receivers. Check wiring at both sides, receiver and speaker. Also, make sure your speakers are not 6 or 4 ohms, that causes undue heat as well and will damage the unit. Hope this helps

Posted on Oct 03, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have a C2001-WK that does not auto shut off


A regulator controls the pressure in the air line leaving the compressor and does not affect when the compressor turns on or off.

The pressure switch monitors the pressure in the tank and turns the compressor motor on and off when the switch closes or opens in response to changes in the tank pressure. If the compressor does not shut off, it is possible the pressure switch has been set to a pressure level that is higher than the compressor is capable of attaining, thus it does not shut off.

The compressor is capable of developing 150 psi and is noted as having a "120 psi cut-in pressure". When you say it doesn't shut off, does that mean it will generate 150 psi or more of pressure and fails to shut off or it develops less than 150 psi and does not shut off.

If the compressor does not generate 150 psi, then it is probably somewhat worn out and not capable of developing enough pressure to meet the factory high pressure limit. I would try adjusting the pressure switch upper pressure limit down to 130 psi or less (less if the compressor will not develop 130 psi) and see if this solves your problem If it doesn't,

If the compressor will develop 150 psi or more, then try adjusting the high pressure limit to less than 150 psi. If you can't adjust the high pressure limit then the pressure switch is defective and needs to be replaced.

Aug 03, 2012 | Porter Cable Air Tools & Compressors

1 Answer

Compressor cuts out after 20 minutes then restarts after maybe 20 minutes


This is usually due to low limit or high limit cut off switches. Basically when it's low on refrigerant the unit cuts out to protect the compressor. Then after 20 minutes the pressure equalizes and the unit kick back on, or the opposite for the high limit switch.

Feb 10, 2011 | LG LS-K2430HL Heat Cool Mini Split Air...

2 Answers

Have 1999 cavilleir does it have a rpm protecter


Yes, the PCM for your vehicle's engine has a rev/speed limit seeting programmed into it. Most stock, non high performance/police package vehicles usually won't go above a top speed of 97MPH. if you were to rev your engine while it was in park or neutral, once the engine reaches the cut out rpm limit preset in the PCM, it will cause the engine to cut back, then it will rev up until it hits the preset limit, then cut back, and it keep repeating that pattern. It may sound as though you have a high rev ignition failure that sounds like waaa, waaa, waaa, waaa, but that indicates the PCM is doing its job.

Apr 05, 2010 | 1999 Chevrolet Cavalier

1 Answer

Tone switch causing loud pop in speakers tripping protectiveRelay


The tone control on this one sounds like it is an active one and either using the low or high pass filter you would be boosting the higher or lower frequencies. Boosting the lower frequecies will be harder on the amplifier, in which case if you would like to use then you may need to connect speakers with a lower impedance or higher sensitivity.

Dec 12, 2009 | Sansui RZ-5300AV Receiver

1 Answer

On my Sony Surround Sound tuner, if I raise the volume up to a certain level (not that loud), I get a flashing sign ''protect'' and the sound to the speakers are cut.


Sony has protection in these receivers for two main reasons.

1 - Checking for DC voltages on the outputs to speakers. Not your particular problem.

2 - Excessive current being drawn from receiver on one or more of the speakers.

Number 2 should be your starting point in finding a solution. Put the volume level on Medium - 35 to 40 on the front panel. Now listen to all you speakers in turn. Any scratching noise will indicate a defective speaker. Remove this speaker from the receiver output and check again if the set goes into protection on high volume.

If you could not find any strange noises on the speakers, remove them one by one and test the set on high volume.

Never - attempt to disengage the protection on this amplifier. The only times we have found the amplifier to be defective with this protection error, it has done so no matter the volume level. Therefore I believe your problem to be a speaker or speakers.

Good luck!

Sep 13, 2009 | Sony Audio Players & Recorders

1 Answer

Inconsistent pressure


As a first check, There should be 2 gauges and a pressure switch with histeresis.
You need to set the tank pressure switch above the regulated output pressure.
The tank pressure will fluctuate between the upper limit and lower limit set in the compressor switch.
The outlet regulated pressure should be below the lower of the switch settings or you will get a varied outlet pressure.
Try setting the tank pressure lower limit higher on the switch - above the outlet pressure required.
Always stay within the tank maximum rating.

If things are nor working properly, it may be the outlet regulator (make sure it is emptied of condensate daily) or a fault with the compressor switch if the tank pressure drops too low before starting.

If the compressor is on more often than usual, then it may need service or repair to worn parts. This is particularly true for vane compressors.

Aug 21, 2009 | Air Tools & Compressors

1 Answer

Disconection the sound


This will be a protection feature of the head unit. If you are not using an amplifier, when the power required by the speakers exceeds the power output of the head unit, it will cut out until the volume level is reduced.

If the head unit turns completely off, you may consider adding an amplifier to the sound system.

Jun 16, 2009 | Pioneer Car Audio & Video

1 Answer

Intermittent operation


This sounds very simple. If the dryer vent hose is partially blocked, the unit will overheat and shut down on thermal lockout. This is an auto reset limit switch. After the unit cools down, it will reset on it's own. This will be very intermittent. Clean the vent real good and be sure to clean the vent inside the unit as well. Then retry.

Apr 09, 2009 | Maytag Dryers

1 Answer

Main limit switch


I am providing some information, but I encourage you to have a furnace technician look at your furnace. The reason is; the limit switch trips when there is a problem that may present a fire or combustion hazard. I've seen these switches go bad, but not very often. Usually they are tripping because the plenum is sooted up and excessive heat builds in the combustion chamber. This is common in older furnaces that have pilot flames- the flame runs all year and soot deposits in the plenum, plugging the air flow through the combustion chamber after years of use.

The limit switch is a safety control switch located on the furnace just below the plenum. If the plenum gets too hot, the limit switch shuts off the burner. It also shuts off the blower when the temperature drops to a certain level after the burner has shut off. If the blower runs continuously, either the blower control on the thermostat has been set to the ON position or the limit control switch needs adjustment. Check the thermostat first. If the blower control has been set to ON, change it to AUTO; if the blower control is already on AUTO, the limit switch needs adjusting.

To adjust the switch, remove the control's cover. Under it is a toothed dial with one side marked LIMIT; don't touch this side. The other side of the control is marked FAN. There are two pointers on the fan side; the blower goes on at the upper pointer setting and turns off at the lower pointer setting. The pointers should be set about 25 degrees apart. Set the upper pointer at about 115 degrees Fahrenheit and the lower one at about 90 degrees Fahrenheit.

Mar 15, 2009 | Heating & Cooling

1 Answer

The volume is not loud enough on my i-pod classic


There is a volume limiter under "settings", check to be sure its turned all the way up (you actually have to click the center button to save). Also you will find "Sound Check" being turned on greatly reduces volume.

Dec 31, 2008 | Apple iPod classic MP3 Player

Not finding what you are looking for?
Sony STR-DB780 Receiver Logo

Related Topics:

138 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

kakima

Level 3 Expert

102366 Answers

 Grubhead
Grubhead

Level 3 Expert

5151 Answers

Are you a Sony Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...