Question about Technics SA-AX540 Receiver

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Terrible sound I used this unit for around 3 years without a problem and then it sat in a storage unit for aprox one year. I just picked up my things from storage and went to hook up my JBL control 5 monitors to mess around with some sound and now when everything is connected I get zero sound up to about 40% volume and then start getting a little bass at that point. From 40% to 100% I get small amounts of bass and I can barely hear the highs and words. Along with the audio problems the light on the input selector knob has gone out although it allows me to still change between the different inputs. The problem affects all inputs in the same way, and when I turn the knob to change inputs I hear a POP sound through the speakers and the music will increase slightly in volume for a split second before going back to the way it currently is. Both speakers "A" and "B" have the problem, all inputs, and I have tried multiple speakers and CD players to test the problem. I took the cover off to see if it was something obvious, and dont see any loose solder points, and there isnt even much dust. It has been a great reciever and I really dont want to have to buy a new one, but if possible please tell me if the problem would cost more to fix than it would be worth. Thanks in advance for any help you can give me =D

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Re: terrible sound

Maybe your tape monitor button is pushed or something along that line of thought. Check all your switches and buttons in front and back of the unit for proper position.

Posted on Jun 28, 2007

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Hmdi input has lost audio

several things could cause that:
1. hdmi cable is no good.
2. receiver and TV are not fully compatible. I noticed few times that philips tvs had problems with denon receivers. Some times you need o unplug hdmi cable and plug it in back to get sound.
3. firmware issue. depends on model of your receiver there could be a software upgrade to resolve the problem.
4. somebody (kids) accidentally pressed some buttons and reassigned video input for that video source (video select button on a remote control), etc. Resetting the receiver usually helps.
5 Receiver (hdmi board is no good) or TV is no good.
so next time when it happens check video source, video input assign then try to swap hdmi cable and TV

Nov 28, 2011 | Denon Audio & Video Receivers

1 Answer

My Phillips HTS3520 plays DVDs fine and the sound is excellent. However, it is not playing the TV channels thorugh the theatre system.

Without more data, I can only make some general suggestions.

First: Check your cables. If you are using a converter box, there must be a set of audio and video cables going from the cable box to the Home Theatre unit. These will be a yellow/white/red set of cables. Second: If these cables are plugged into "AUX1" or "AUX2" make sure this is what reads on the front of the HT unit. You already have cables going from the HT to the TV because your DVD works.

Although this sounds obvious (please forgive me-I am not underestimating you) IF your TV receiver is 6 years old or more, and you are NOT using cable or satellite, there will be nothing for your set to pick up since the conversion from analog to digital.

Jun 05, 2011 | Philips Audio & Video Receivers

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Onkyo ht-r960

I had the same problem at 1 year after purchase. I was upset. In addition to looking here, I also emailed the company. They took a month to get back to me, but their solution worked perfectly.

"Try resetting the unit by pressing VCR/DVR and the standby/on button at
the same time on the front of the unit while it is turned on. The unit
will display CLEAR and shut down. All settings will be erased. "

All my components connect without any problem now. Hope this helps.


Jan 20, 2010 | Onkyo TX-SR606 Receiver

1 Answer

I have an AVR 335 less than 3 years old no sound


Yes, there is something you can try, to know where to look for the problem if this happens again. If the receiver is still under warranty, just send it back, otherwise, open up the amp and trace the path back from the speaker channel to the capacitors on each channel, this is usually the problem(you should be able to see if it is blown, cheap to repair).

If all the channels went out at the same time, there is something wrong with the central unit, to repair that, if it is not the above problem, cost expensive.

Hope this can help you.

Kind regards

Nov 09, 2009 | Harman Kardon AVR 335 Receiver

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RX-V1 (No left main channel sound)

Sounds like the output stage of the amp is bad. Needs service.


Aug 24, 2009 | Yamaha RX-V1 Receiver

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Sony receiver DA5ES. Unit start arc and shoot off.


I own the same unit (since 2001) & have had no problems. I would get it looked at & see what the issue is & what it would cost to fix. Would it be worthwhile? Well you'd have to ask yourself how much $$ you'd be willing to spend on a replacement vs repairing this unit & based on how much you'd be willing to spend, would the specs on a replacement unit measure up. You'd have to ignore things like HDMI inputs to keep it apples to apples.

I've owned various Sony components for a long time. I only had to get one unit fixed one time (a CD player that my one year old decided to do a chin-up on :( ). The unit was 7 years old at the time and my son is now 12!!. the unit still functions flawlessly since being repaired. Sony builds their stuff to last, even after beiung abused.

Dec 11, 2008 | Sony STR-DA5ES 6.1 Channels Receiver

1 Answer

I have a panasonic 5 disc stereo which I purchased 4 years ago its a SA-AK110 and always jumps when I am player CD's no matter what volume level how do i fix this problem?

It is the chrome rails bars grease that's hardened already causing to jump the disc. Due to accumulated dust and dirt to the grease.Just take out the old grease with an alcohol and change it with a type-A grease,only put a little amount...
Manually cleaning the lens

To locate the laser lens, look around the door or drawer of the DVD player and you will see a small circular disc, which is often called the turntable or disc platter. Right off the edge of the platter you should see a small clear lens. There are some manufacturers that have had problems with the lens, depending on the age of the unit. In these problem players, moving the unit to a different location, turning the unit upside down, or sometimes even without moving the unit, the lens can become detached from the laser assembly and floats around inside the unit. You can re-glue it back with a little crazy glue, BUT it must be perfectly centered, and without getting any glue on it. So, if you don’t see the plastic lens, but instead see the laser pick-up assembly, look around for the lens inside the unit and glue it back on.
To clean the lens you must use very little pressure. Take a cotton swab and barely moisten it with plain, non-scented, or oily type alcohol. In a swirling motion, very gently rub the lens until you’ve covered it entirely. Then repeat using the dry end.
If the cleaning didn’t help, don’t despair just yet. You can see if there’s a problem elsewhere in the unit by using a few simple tricks and tips.
First thing you want to see if the unit’s laser is in good working order. This method isn’t foolproof, but most of the time works admirably. When you insert a disc, see if you can look up underneath where the disc sits on the turntable. Observe the laser lens going up and down. If the lens is trying to focus, that’s good! After a few seconds of the lens trying to focus, the platter should start to spin. On almost every CD/DVD unit I've encountered, the unit won't spin unless the laser has properly focused on the surface of the disc. If the unit spins up and and then shuts down, you should check and make sure the laser pick-up assembly slider mechanism is working without any obstructions and that the small chrome rail that it slides on is slightly greased. Don’t go overboard with the grease though, as too much can cause all sorts of problems.
The slider mechanism, depending on the age of the unit and the manufacturer, consists of the small chrome rail, a drive motor, a small gear assembly, and (in some units) a small belt that drives the slider unit via the motor. This small belt causes all sorts of problems. If the belt is broken or slipping, it can cause skipping, dropouts, or simply no start up at all. Also, if the belt breaks in the middle of the disc, the drive mechanism gets hair or dirt wrapped up into the gears, or the pick-up assembly doesn’t return to the start position (called home), the unit will (99% of the time) refuse to release the disc, causing it to become stuck inside the unit. There’s a little micro or leaf type switch located at home position that sometimes gets dirty or breaks and, causing this problem also.
If the disc starts to spin slowly and doesn’t come up to speed, the spindle motor that’s attached to the turntable platter is a common problem. There could also be a problem with the spindle motor driver controller IC or the power supply regulator that supplies voltage to the driver IC. If the disc starts to spin and then spins really fast, or stops and starts to spin backwards, your problem is the laser pick-up assembly or the servo control circuit. If you continue to have problems after cleaning and checking the other things listed above, you may have a problem with the player's alignment. Of course, one of the problems you'll face checking alignments on a DVD/CD player is that you’re going to need to use an oscilloscope on most of them. If you have the proper tools and equipment, the first thing to look at is the RF pattern of the unit while its playing. It should be a sharp and clear pattern. If it's dull and smeared, then the laser could be weak.
Also, in these units are very critical alignments called the focus/tracking gains and offsets. When these alignments are off, it can often cause intermittent troubles. As the unit ages and parts change value, so do these alignments, and will need to be checked. In my time as service technician repairing DVD/CD players, 65% of the laser pick-up assembles I have tested were good and only needed a small adjustment. Today's technology makes it unfeasible for a shop to hook up a DVD/CD player, and even some recorders, to their equipment and make these adjustments because of the cost involved.

hope this may help;



Jul 27, 2008 | Panasonic Audio & Video Receivers

1 Answer

Hello, My name is kenny tompkins. i have a problem with my fender bassman amp that no tech in my area can figure out. i was hoping to run this by you and see if you've ever encountered this problem before....

I can't confirm this without testing the amp directly, but I would suspect bad capacitors in the pre-amp section. Some of them may have dried out a bit over time. Anyone that is familiar with guitar amps should be able to resolve this for you. The other thing to check is the 12AX7A tubes inside. Swap them around and see if the symptom changes. You may also have a bad tube.

Keep us posted.

Jun 27, 2008 | Audio & Video Receivers

1 Answer

Starting system cold, no sound for 2-3 minutes

Its not worth having it looked at. $100.00 for a new 400.00 unit? My unit is doing the same thing. Turn it on and 2 to 5 minutes later it may come on. Change to video 3 4 5 etc it stop again. Only works with a cold start. Something in the unit has failed and is heat related. My original Kenwood 20/20 recevier still works. Must be 40 years old. New products just last 5 to ten years max if your lucky.

Dec 17, 2006 | Kenwood VR-6070 Receiver

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