Digital (optical) audio jerks on and off every second or so

Sudenly got this annoying problem, when sound on optical audio cuts off and on again repeatedly every second or so. As if there was a wire with bad connection. The optical cable is fine thou, i checked with my other macbook.
So that must be a problem with my main macbook. I restarted it in hope that its just a software glirch, but the problem remains.
Sound from MBs speakers ir fine.
What to do?

Now there is no sound at all. When i connect optical toslink there is no sound. When i connect usual 3.5mm jack to analog system, it sounds ok.
I can see the red light, but there is no sound. What could it be? Software or hardware problem?

Similar Messages

HT3205 Green light flashing on and off every second

What is indicated by the green light on the charger going off and on every second?

Usually it is a charger or battery issue.
Try a SMC reset:
http://support.apple.com/kb/HT396
Use the method which applies to your Mac, a battery you should remove (most likely)
You can also check the battery status by clicking on the Apple logo and About This Mac, More info or system profile (depending on which oSX you are using as it is not in your profile) Power in the left side bar and check battery health and other stats.

Can anyone help me get my Apple TV display to stop blinking on and off every second?

Hi,
My Apple TV is a little under a year old its not version 1 I'm pretty sure it's 2... When I started it up the other night it came on but the display in the screen was blinking on and off about one a second non stop. The white light on the Apple TV is solid white. I was behind an update so I updated it using restore and when it came back on the display is still blinking on and off. When I restart it, the initial apple logo comes on solid which gave me hope but once it transitions to the initial menu screen it starts blinking again. Anyone have a solution?
Thanks for your time,
Dadguy

Hi again,
A couple more things I should add. Everything else plugged into the plasma screen works fine, Xbox, satellite, wii etc...and I did change hdmi cables with the Xbox and the Xbox still worked fine and the Apple TV continues to blink on and off on screen.
Thanks,
Dadguy

Using MacBook Pro as Digital Optical Audio bridge...

I have an idea for my MacBook Pro, but I'd like to know if it's feasible before I go and buy what I'd need to test my plan:
I have an Xbox 360 with digital optical audio out (TOSlink), and I have a MacBook Pro with digital optical audio in (through the 3.5mm minijack on the side. So far I'm A-OK.
Now, I'd like to know if I can have the Xbox's output go into the MacBook Pro's input, and route that audio signal through the MacBook Pro to either (a) the stereo output of the MacBook Pro, or (b) (preferred) my 5.1 decoder on my Griffin FireWave.
Every time I use the Xbox, I have to unplug the audio from my speakers to the Griffin FireWave, and that's a pain because the wires are all behind my desk. If I could route the audio through my MacBook Pro, then everything would be perfect. Is this possible?
And if this isn't possible, can I use an old iMic adapter I have laying around to route the audio through the MBP?
Thanks for your help!

I found a program called LineIn that allows 'software audio pass through in to out,' but I don't think this will pass the 5.1 channel audio through to my FireWire-connected Griffin Firewave.
Does anyone know of any way this can be done? Do you think the Audio/MIDI Setup Utility application can be of any use with this? Or is there a way to pass the digital signal straight through to the Griffin?

How to connect Digital Optical Audio output iMac with Receiver Input

I have connected iMac with onkyo hts-3300 home theater system receiver through optical audio TosLink Cable.( http://www.amazon.com/Digital-Optical-Audio-TosLink-Cable/dp/B001ZU3G2I/ref=sr12?ie=UTF8&qid=1292865309&sr=8-2 ). Unfortunately there is no sound coming out from the Home theater system. I have verified the Receiver optical input is working fine by connecting with my TV optical audio digital out put and the it's working great. The only difference between TV and iMac is, on my TV, it has optical audio digital output and I can use this cable (http://www.amazon.com/Tripp-Lite-A102-02M-Digital-connectors/dp/B0002WPREU/ref=s r11?s=electronics&ie=UTF8&qid=1297320792&sr=1-1) to make it work. I can also verified my optical audio TosLink Cable working because I can see the red light coming out from the cable. So the only problem could be from iMac. I doubt I need to change the additional setting to configure iMac to use external optical audio setting instead of the buit in audio setting. Hoe can I able to do it? or my iMac(IMAC 21.5"/3.06/2X2GB/500GB/9400M-ITP
MB950ZP/A) doesn't support optical digital audio out put? I have follow this thread http://discussions.apple.com/thread.jspa?messageID=12769423&#12769423 and to my surprise which doesn't work out for me. I doubt that i need to change some setting, but when I got to setting>> sound I cannot change any setting. I was quite depressed aldy. Can someone answer my question as i m a newbie here. Thanks a lot

Thank you very much for your reply.
@Király : May i know how to Open Audio Midi Setup? Is this Audio Midi Setup is in the locatated in the Setting in Mac Snow Leapord OS? or how to locate this "Audio Midi Setup " in Mac enviroment. Is it possible to open this Audio Midi Setup in windows 7 enviroment also? I Just want to get the audio from my iMac in Hts-3300 onkyo home theatre. YOur help is much appreciated
@rkaufmann87 : Thank you very much for your sharing about this http://www.apple.com/airportexpress/ connection. for me what i understand is the digital audio output in airportexpress is the same as the audio out put in iMac in terms of details sepcs. So this airportexpress will only help you connect wirelessly to home theatre system, rather than waired connection. Other than that nothig much difference. So there is no point for me to spend extra bucks to attain the wireless connection. Unless the airportexpress have optical digital input, which i believe not. Correct me if I m worng, thanks

HT4623 i pressed update on my iphone4 and now the apple icon just comes on and off every 10 secs and i cant turn on my phone. please help me..

i pressed update on my iphone4 and now the apple icon just comes on and off every 10 secs and i cant turn on my phone. please help me..

Hello dagobertofromelsalvador,
Thanks for using Apple Support Communities.
For more information on this, take a look at:
iOS: Unable to update or restore
http://support.apple.com/kb/HT1808
Best of luck,
Mario

I can't connect digital optical audio cable. No option in drop down bar in audio settings.

I can't connect digital optical audio cable . No option in drop down bar.

Try System Preferences > Sound > Output

[59-429213] LTE Modem keeps swithcing on and off every 30seconds

I recently bought Lenovo Yoga 2 with Windows 8.1. Everything works great except lte modem. It keeps switching on and off every time I am using the internet connection. When tablet is resting, then modem is working, but when I'm trying to do something, browse the web for example, it starts to freak out. Modem disappears from Device Manager for couple of seconds and keeps on popping on again after 3-5 seconds. Then it tries to connect to the provider, then I've got the internet connection for about 30 seconds and the same thing all over again. Modem disappears from device manager, opening on again after 5 seconds and tries to reconnect (with success) with the provider and so on, and off, and on, and off. It is very frustrating and I tried to find some solution but unfortunately without success. Maybe you guys will have any idea what is going on. Thanks in advance.

You have to update the EM7345 firmware. What version do you have now ?
More info here http://forums.lenovo.com/t5/ThinkPad-Tablets/Sierra-Wireless-EM7345-ThinkPad-8-and-10-general-issues...

Iphone keeps switching on and off every 5 mins and on automaticly.

phone keeps switching on and off every 5 mins automaticly. I don't know what to do. I just did Hard Reset and it still switches off every 5 min. Please help !

To make sure that this is not software related, set it back to factory settings, explained in this article:
Use iTunes to restore your iOS device to factory settings - Apple Support
You might have to use recovery mode to do so, if it is not recognized in iTunes:
If you can't update or restore your iOS device

EA4500 Internet Port Cycles On and Off Every Few Second

I bought a EA4500 to replace my old WRT54G earlier this year. At first the router worked fine. After the automatic firmware upgrade to Cisco Connect Cloud, I was never able to get the Connect Cloud stuff to work, constant 500 Internal Server errors when trying to access the router with the Internet cable attached. So I downgraded back to the old firmware and all was well again. Then I started having problems a few months ago, when I would wake up in the morning, the router would be cycling the Internet port on and off. I could usually reboot everything and it would work the rest of the day. I lived with it like this a while, and support couldn't seem to find anything wrong. Eventually it started getting worse, until the point I could hardly ever get it to stay connected. I got Cisco to RA the old router and I figured problem solved. Now while the EA4500 was gone, I used my WRT54G again, and everything worked fine for nearly two weeks while I was waiting on the replacement EA4500.
So today the new EA4500 showed up, I connected and configured it, and it worked for a short time. Then suddenly I lost Internet, looked up at the modem and the LAN light was going on and off every few seconds. So I'm back in the same boat as before.
I've tried changing cables, same setup works fine with the WRT54G. Modem works fine with WRT54G and connected directly to the computer, zero problems. I tried lowering the MTU, turning on MAC address cloning, and various other things.
My modem is a HughesNet HN9000.
Any suggestions or ideas would be greatly apprecaited.
David

OK, the setup as is works fine with the WRT54G, just the EA4500 has the issue. It started working again last night, and was working this morning. It continued to work until about 3:15 PM today, and out of the blue, my computer came up and said the Ethernet connection went off, then it came back on, it did this several times...at the same time, I looked up at the modem, and the LAN light was going on and off on it also. So the router was cycling both the Internet and Port 1 on and off.
My HN9000 has a static public IP, and the IP it's DHCP server gives out is one digit different than it's own IP.
My router is set this way, and this is what it gets if I switch the Internet to Automatic (DHCP):
IPv4 Address: 97.xxx.xxx.194
Subnet Mask: 255.255.255.252
Default Gateway: 97.xxx.xxx.193
Then there are two DNS server addresses. I've tried the router setup as Static IP or Automatic (DHCP) and the problem occurs either way.
The HN9000 seems to pass all incoming traffic straight to the router.
One the LAN side, the router is configured to give out IP's in the 192.168.1.x range, and I have some static leases set. The router is 192.168.1.1.
Everything works with the computer connected directly to the modem, and with the WRT54G in place of the EA4500.
As far as calling Hughes, they won't support the router. If it works without the router, and with another router, they will say it's a problem with the router, which I think it is, just not sure what. Also, just to be clear, I do loose Internet access on my computer when the router acts up, but the HughesNet modem remains connected to the Internet.

HT4623 my iPhone 5 will not turn on. The apple comes on and off every 4 seconds. I tried a hard reset. I tried connecting to Itunes. Wazup?

my iPhone 5 will not turn on. The apple comes on and off every 4 seconds. I tried a hard reset. I tried connecting to Itunes. Wazup?

See Here > http://support.apple.com/kb/HT1808
You may need to try this More than Once...

Every video or podcast stops and starts every second

Any help would be appreiciated, using Chrome, Windows XP Pro with SP3, Pentium 4 2.4GHz, with 2GB Ram, with Nvidia Gforce 5200 video card! Too old a system??

hi, all three are pretty much the same, and its not a buffering issue. I hav Verizon Fios and had a WUGNET speed test show download speed being 11.3 Mbps and upload of 1.24. It was possible the Html was slightly better but not by much.
Jim
Date: Thu, 25 Oct 2012 15:22:01 -0600
From: [email protected]
To: [email protected]
Subject: Every video or podcast stops and starts every second
    Re: Every video or podcast stops and starts every second
    created by Chris Campbell in Using Flash Player - View the full discussion
That should be fine for system specs. My first guess would be network bandwidth issues. Does it seem like the video/audio buffers fast enough or does the buffer continue to run out when the item is played? Try these two links out, do either of them play better? HTML5 videoNon-HTML5 video Thanks,Chris
     Please note that the Adobe Forums do not accept email attachments. If you want to embed a screen image in your message please visit the thread in the forum to embed the image at http://forums.adobe.com/message/4801142#4801142
     Replies to this message go to everyone subscribed to this thread, not directly to the person who posted the message. To post a reply, either reply to this email or visit the message page: http://forums.adobe.com/message/4801142#4801142
     To unsubscribe from this thread, please visit the message page at http://forums.adobe.com/message/4801142#4801142. In the Actions box on the right, click the Stop Email Notifications link.
     Start a new discussion in Using Flash Player by email or at Adobe Community
For more information about maintaining your forum email notifications please go to http://forums.adobe.com/message/2936746#2936746.

Computer on and off every other day

is it bad? i really don't know. i've been doing this logic 7 hour sessions every other day by myself for 2 years... almost flawlessley. A true gift to have this time!!!It's unbelievable how much you guys have helped me here. I've been rec./ digitally for 10 years now...am I screwing up by powering down (everything)Monitors, Preamps, external drives..mixers. I always do this.

At the rate of which Electrical component are made today, there shouldn't be arm in leaving stuff on,
where as its made from a reputable manufacture, and as a signature or seal of approval.
Power-ing down stuff will result in less consumption of Electricity, and will maintain a better system in-terms of abuse when left unattended.
E.g. if there is a power failure back and forth, which may blow your system, if its not plug into a power-serge, that will protect it from these element of surprise.
Another e.g. if your using a projector, and its left on, when not in use, then the life-span of the bulb, will be shorten because the life on these bulbs is for a certain amount of hours.
So in this case leaving it off will result in a better life-span,
also plasma screen is like that as well, other than that, it should be fine.
If you're not bordered about paying the excess on electric rates,
even though have it on and off, then on again could result in you paying more, than if it was to be left on in the first place.
Stuff such as monitor is always left on even if the computer is off, in most set-up.
Power amps/Mic/pre nice to leave of when not in use they eat that energy, believe.
Fr.BlayZay.

Does digital optical audio output "sleep"?

Digital audio works fine as long as an application is actively generating audio, but when it is paused for a short while, I start static from my amplifier similar to what I hear if an optical cable is disconnected. I notice that there is no light coming out of the end of the optical cable. This was a problem in setup, as the absence of light caused me to think that the optical cable was damaged or not properly connected.
Does the optical audio output "sleep" after a period of nonuse and lose carrier? Is there a way to keep it active all of the time?

I've also been having this problem with my Mac mini (2009 version). Static/crackle sound over digital connection when the audio has been idle for a short while.
It reminded me of an old problem that some PowerBook G4 users had several years ago, where the audio hardware would go to sleep to save power and there would be a delay while it woke up. I remembered that there were a coupe of utilities created to remedy this problem by playing silent noises at short regular intervals.
I tracked down these utilities - KeepSoundAwake and SoundOn. Someone mentioned that SoundOn used a whopping 1% of CPU and showed a Dock icon, while KSA usage was usually 0% and had no Dock icon. So I decided to try KeepSoundAwake.
Here is a link:
http://mrfeinberg.com/KeepSoundAwake/
So far so good. I've been crackle-free for the last several minutes since starting up the program. This is a pretty ancient application (last update was a fix for 10.3 compatibility), so there are a few things to be aware of. I now have this one non-intel-native app running constantly, which is sort of a bummer - but with 4GB, I'm not too concerned. The PrefPane that comes with it will not run at all since it is not intel-native, but the default settings are fine so that's not really a concern either. You do need to make the app a startup item so it will be running all the time.
If I encounter any problems with using KSA with my setup, which includes running some multi-channel audio through Plex, I'll report back here.
I do wish Apple would officially address this issue so we wouldn't need to use a 7-year-old hack!

HT202730 Macbook Pro Optical Audio Output Toggles On/Off

My Macbook Pro optical audio output seems to switch off with a loud click when sound is not playing for a few seconds.
Then, when sound resumes, there's a delay as it switches back on.
Is there a way to stop this toggling?
And please don't tell me to check the connections.
I've already tried different sample sizes and bit rates to no avail. It seems as if the system is switching something when there is no audio being played, then switching it on again. Even if the playback is only on pause.

Reset PRAM. http://support.apple.com/kb/PH18761
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".

Digital (optical) audio jerks on and off every second or so

Similar Messages

Maybe you are looking for