PS3 is The amazing device by sony but it has some common problems like
sound , video problem etc.... Good news is that these all
problems can be repaired with the help of DIY Guides, one such guide
available at PS3 Repair Blog
a 6ya Technician 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 repair professionals here in the US. click here to Talk to a Technician (only for users in the US for now) and get all the help you need. Goodluck!
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You need to localize. Play a DVD, does the same audio cutout happen? Do you have the center dvd or the left mounted dvd? The console unit has input jacks for external audio inputs, put an external audio source in and see if the same cutout occurs. See if the external output jacks lose audio or just the system speakers, including subwoofer. This may help localize which unit has the problem.
Is the console stacked above or below other electronic units, it may be a heat related cutout? Reseat all your interconnect cords, I have seen corrosion occur on the square connectors.
These are expensive to have repaired, good luck. If you're daring enough, you make find free service manuals on websites like Elektrotanya, hifimanuals, hifiengine, and eserviceinfo (.com)
If you have not done so,try unplugging the unit for a short time,at least 5 min. then plug in and try it again. the microcomputer my be "locked up" due perhaps a static discharge this may solve the problem.If this doesn't fix it you need a good electronic techs help.Good Luck
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
So, if you unplug this unit from the wall completely, let it sit for a good 2 minutes, and replug it in, is the alarm still going off? If so something has definitely malfunctioned inside the device. Let me know and I can continue to help!
When the word protect shows up it means trouble. The circuit that shows the warning and shuts the unit from working has detected a short somewhere in the unit. More than likely one of the output transistors but not always. Have you had a power failure lately? Lightning strike? Power bump? If so the problem could be in the Low Voltage power supply. First unplug the unit. Take the bottom off if it has a panel which can be removed separate from the complete bottom. Under the panel should be the output transistors. Check to see if any are shorted with a DMM. If you find any they will need to be replaced. If you do not find any you will probably need a competent tech to troubleshoot the unit. Let me know if you need anymore help.
This means that something is seriously wrong with the unit(blown amp, shorts, opens, etc.) however, you can reset the unit by unplugging the unit, holding the A and B channel buttons on the face of the unit and plugging in the reciever. the display should flash at 1 second intervals. if it doesn't stop flashing on its own then unplug and replug and you should be good to go! good luck.