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Sound fades (fizzles out) on one channel intermittently. Can be ok for a while then problems start. Sometimes tapping the case ogf the amplifier will fix it for a short time.

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It can be something blown, or that the frequency is to high or low on the speakers, try changing the speakers.

Posted on Apr 29, 2008

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Subwoofer channel no longer has output


Is your sub powered (amplifier built-in)? If so, connect your MP3 player directly to the sub input and see if you hear audio. If you do hear audio, check for cable problems from Panasonic to sub input. If the sub is unpowered then it's either the speaker wiring, an intermittent sub and/or your Panasonic at fault.

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I have vestax 05pro2. Left channel works but out of one speaker. The turntable input is good. Im thinking Its either the channel fader, or the rca inputs for that side. Has anyone had this problem?


Hi,
Here's a solution to see if you have a problem with either your receiver or turntable.
The turntable has 2 RCA's one red for right channel, and one white or black for left channel, which plug into the back of the amplifier.

  • Unplug both RCA from rear of amplifier.
  • Plug in a cd or dvd player into those inputs on the amplifier, the sound will be lower but it will give you an indication if the amplifier is ok or not.
  • If you have sound on both channels left and right then the amplifier is good
  • If you still only have sound on left channel, then there is a problem with the right channel input on the amp.
  • If your amp, is good, unplug the cd /dvd player.
  • Put a record on and start playing the record
  • Plug the white or black RCA from the turntable into the rear of the amplifier marked left, you should have sound.
  • now unplug it from the left and plug in into the right red RCA socket, if you have sound the amplifier is working fine.
  • if there is no sound there may be a problem with the stylus cartridge on the turntable
  • now lets reverse the test
  • unplug both RCA from amp.
  • Plug the red RCA into the left socket on amplifier, if there is sound, turntable is working fine, if no sound there is a problem with either the stylus cartridge or that red RCA cable.
  • now unplug the red RCA from the left side and plug it into the right side socket
  • if there is no sound there may be a problem with the stylus cartridge or RCA cable.
I hope this helps

MobileJB

Jul 15, 2011 | Audio & Video Receivers

1 Answer

Only get sound out of right side both a and b


Good day sir, Hi, your Philips receiver trouble can be any of the ff:
  1. your receiver left fuse is blown, check if it has a user fuse at the back. or
  2. your main IC amplifier for the left channel is bad. you need to replace that IC, but check first the wiring of the speakers.
  3. Check your receiver left speakers if it is producing a soft hum, to do this turn down the right channel, or adjusting the balance knob to the left, or simply remove the speaker connection of the right channel. place your ears on the left speaker as you adjust the volume up and down, do you hear a soft hum that goes up and down also? If yes the problem is on the source section before main amplification, usually the pre-amplifier stage, If you hear no hum at all. problem with the main left amplifier. The main amplifier is usually a single IC for both left and right channel, OR one IC amplifier for the left and one for the right, in both cases, replace the bad IC.

Jan 21, 2010 | Philips Audio & Video Receivers

1 Answer

AVR 100 product can't out sound.


Assuming that the system is properly installed and was working ok before, the problem is usually a blown output amplifier in one channel and the receiver disconnects the speakers to avoid damaging them. In this case, professional repair is required.

Nov 15, 2009 | Harman Kardon AVR 100

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About 8 months old...one channel does not work...I've tried speakers and headset, one channel silent on both... we've had lightening storms, I'm on a surge protector, is it a fuse or a button I need to...


Did problem happen suddenly, or did the sound fade out slowly over time. Either way, this is not a fuse or button problem. Sometimes the volume knob will fail and you will hear sound from only one channel. May be able to order a new volume knob component.

Sep 24, 2009 | Sherwood Audio & Video Receivers

1 Answer

Distorted sound in channel


PLEASE :) wear saftey goggles, no jewelry or watches while troubleshooting a live amp. Tube amps have up to 600V dc on some points so rubber gloves will improve the saftey margin. My primary suggestion is to take it to a pro. Please be safe if you are inexperienced. I can't be liable for my fixya suggestions.

I think you meant "changed" Left speaker with Right Speaker and visa versa. Some receivers have speaker A and B selections from a switch on the front, which is why I ask. I think you tried each speaker on the bad channel to find if the speaker was blown. If the speakers are OK make sure that the speaker wiring is good too. Sometimes they can be compromised so use two short lengths of new wire for trouble shooting. Try the other functions like tape, cd, phono, aux, dvd, ect. and if there is no problem with them then it is your tuning system. Check your antenna first. Make sure you are tuned to the station with max power received. Sometimes you can lose Stereo with analog tuners or be tuned to a harmonic frequency close to the target frequency. Check all of the fuses. Sometimes slo-blo fuses can blow incompletely resulting in a high resistance that causes a voltage drop. If the problem is still there you have trouble in the RF receiving/pre-amplification circuit or blown components in the output transformer/tube/transistor circuit. This is verified by having the same problem with the other functions above. In either case, you will need to take the unit to a repair service or get a service manual and test your voltage points to determine which components are bad. Without a service manual, I would start with the Left output transistor. Check the AC and DC voltages with respect to ground (chassis or negative output/input) on the good channel at all nodes and compare them to the same ones on the bad channel. Again, start with the output circuit for the amplifier. There will be one or more transistors per channel. They will be screwed to a heat sink. Also look for brown, cracked or melted components. Keep in mind that replacing these does not necessarily fix your problem as there is usually a failure elsewhere which caused them to go bad. Work your way back to the actual input signal and you will have hopefully found the problem. Good luck, be careful, and seek some local advice from your friends or repair technician. Happy Shooting!

Jul 08, 2009 | Pioneer Audio & Video Receivers

1 Answer

Sherwood RVD-9090R Left Rear Channel Failure


its due to your player there is nothing wrong with fuse... don't crack the case...try this just connect M1 & M2 to the aux input of your home theater

May 23, 2009 | Sherwood RVD-9090R

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Sony STR DE835 center channel issues.


it could be your wire. try using different speaker wire. if it still has that same problem, take the cover off and tap on the amplifier.

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you have dry solder joints in the output stages to the front channel.-solution. resolder channel.... or dirty speaker protection relay contacts. can be determined by tapping the top of the protection very gently when fault occurring. solution. burnish contacts and treat with crc2-26

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