Audio on front left speaker is very crackly with reduced sound output. Have fault found speakers and cables, fault is definitely the SR7300 Amp. A couple of techo taps on top of unit fixes the fault temporarily.
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Re: One speaker channel is crackly.
There is Definately a Short in the Amp if tapping Fixes it. Could try opening the amp and Inspecting the Back side of the Terminals. You can use a Voltometer and check the Wiring inside. Turn off Power Before doing this!
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As power amps are just two amps joined together all you need do is identify the left channel and compare it with the right. Ignore any parts common to both channels. The first thing to do is a visual check. If something looks broken burnt, or odd compared with the right channel then you have probably found the culprit. I suspect you could have a power output failure. It might be that the output devices are separate transistors. They might need to be replaced.
By the way just follow either the internal speaker leads or the connections to locate the right and left channels.
Yes, I can help you. Your DVD player should have output connectors in the back of it to plug your amplifier or receiver into. If you have a Stereo system (no surround sound speakers, or front center speaker) connect the DVD Audio Cables on the back of the DVD player to the STEREO Output Jacks. If it is connected to the Left Front and Right Front jacks of the "Surround Sound" output jacks instead of Stereo is that the dialog on is sent to the CENTER channel output. If you have no center channel speaker you will not hear it. If you have a surround sound system with two speakers in front and two speaker in back. Then you need to make a change in the Receiver Setup (Which may be set up for 3 speakers in front) so that it is set up for 2 speakers in front. The last thing my simply be that you have a center channel front speaker that is not completely connected because of a wire falling off, etc. Hope this helps, Best, Mark
Make sure the audio level on the left and right channels are balanced. Check the menu for audio levels to adjust and make sure they are not maladjusted. If all levels are adjusted properly then the volume control or volume control circuity may be at fault.
With what signal did you try? Maybe your signal source (DVD/TV or radio) didn't contain any sounds for the center channel. Go to the Setup menu, Speaker setup / Manual setup and find there item called "Test tone". It will output a test tone to each speaker individually (you will see on LCD which speaker is being tested at each moment). If you will hear a sound from the center now, there is no issue and center is working fine, just your source didn't contain any sound for the center.
If it doesn't work, then either you have faulty cable, faulty speaker or faulty center output of the receiver. - Try connecting the center speaker to different output of receiver (this will test if speaker is OK). - Try connecting working LEFT speaker to left output with CENTER cable (this will test if cable is OK). - Try connecting working LEFT speaker with working cable to the CENTER output (this will test the output of receiver if OK - but use the Test Tone from Setup).
How do you have the audio hooked up from the TV set? If its s video or RCA plugs? If it is switch them around and see if it swaps channels that goes out . If it does then the output cable or the jack is bad. If your using an HDMI ir a scart cable. The cable or connections could be bad. Unplug it and reinsert it or while the units on mover it around and see if the audio comes back on.