I have a sony strdg720 that i just got bout 3 weeks ago brand new. problem is i get a high pitched whine from all 7 speakers regardless of the volume. i trouble shot it in any possible way.even took it upstairs to a diffent plug and it still does that. anyone got a solution or the same problem? its not very loud but loud enough to be annoying at night.
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Re: sony strdg720 problem
Try turning off any surround mode so all you have working is the 2 front speakers. If the soundgoes away, the problem is in the digital surround processing and you are hearing the results of digital noise. Since this unit is new, return it for an exchange indicating the problem. It should not be making this sound.
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A capacitor is more like to fail than a coil, so I would also suspect a cap first. Capacitors conduct high frequency more than low frequency, so this may explain the extra load and shutdown on high frequencies.
Hello The problem is with its backlight inverter board. there are some step-up transformeres [small ones] fitted on board. If any one's core bacome loose this fault will occur. Just open the TV and listen to which one makes hi-pitch noise. Replace it, if you can buy it from the electronic market at your town. In most cases, the inverter board needs replacement. This board can locate on the right or left side of the panel, fitted vertically. http://www.dataentryjobs.us/67948.html
If you don't want to buy new speakers, settle for safer low volume levels.
You're going to kill that receiver driving a 3-ohm load. HTS-style speakers aren't reliably re-deployable to other electronics. Perhaps, if you have 4 speakers and they're similar you could wire them in SERIES and present a 6-ohm load to each channel.
Re-engineering the speakers themselves is, well, don't do it. It isn't rocket science but it also isn
Try turning off any surround mode so all you have working is the 2 front speakers. If the soundgoes away, the problem is in the digital surround processing and you are hearing the results of digital noise. Since this unit is new, return it for an exchange indicating the problem. It should not be making this sound at all.
It occurs when you have a speaker wire touching something that it shouldnt and and you are grounding out the system. The system is going in to protect mode to keep itself from being damaged
In my case I found that I had a couple of frayed wires from one of my back speaker terminals touching the wire on the other terminal. This was all it took. I re-inserted the speaker wires on that one particular speaker and made sure they were not touching and problem solved.
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.
Hello! Yes, you need to worry when a Sony gets hot!! You probably have replaced factory 8 ohm speakers with 4 ohm speakers. Look on the back of your new speakers and see what they are. Then look at the rear of your receiver by the speaker terminals and there will be a sentence like "8 Ohm minimum per channel". If your Sony says " 8 ohms " you need to use 8 ohm speakers. Also, are you a using low level signal ( audio out ) to drive your sub or are you using high level ( speaker line )??? I'd use low level. Good luck!!