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No sound but powers on - Power Acoustik LT-980/2 Car Audio Amplifier

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Luxor 40 LCD TV no sound


First, check the volume and mute settings, especially if there is another person in the house who may have changed them, and check another channel or input to ensure the signal source is not the problem. Next, verify that the sound is set to use the internal speakers, or that the external sound system is set to the input from the TV (some TVs with external sound output connections can be set to disable the internal speakers so they don't interfere with the external sound).

If you have no sound on any input, muting is off, and the volume indicator acts correctly, then the audio circuit on the main board is defective, or the audio power supply needs to be repaired. If your TV has a sound output connection that you have not connected, try connecting it to an external sound system and setting the TV sound to go to the external sound system. If it works, then you have narrowed the problem to the sound power amp in the TV, or to a bad power supply (some TV models have a power output specifically for the audio amplifier, although that is not common).

Most of the time, power supply failures in LCD TVs are the result of burned-out electrolytic capacitors. These are usually identifiable by the domed-up top of the capacitor, as pictured here. Note the flat tops on the good capacitors nearby. If you see these on the power supply board (the cable from the power board connector goes to the power supply), have them replaced with Panasonic FR-series capacitors; these usually have the best combination of price, power handling capacity and longevity.


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Sep 27, 2018 | Luxor Televison & Video

1 Answer

No picture or sound


Hi,

Looks like a power supply issue the only solution to fix this up is to get it repaired.

Goodluck..

May 03, 2008 | Toshiba 32HFX72 32" TV

1 Answer

I have a crown power amp XTi 2000 that will power up and then i hear a clicking sound and it powers down. could it be the switch. it sounds like the sound is coming from that direction


Look on the heat sink for a temperature sensor that operates the overload relay. . Make sure the heat sink isn't overheating. If it is then the output transistors are shorted.

Oct 14, 2014 | Audio Players & Recorders

1 Answer

I have a memorex. I am getting sound but no picture. When powered on, the memorex sign shows up but then no picture just sound. Also makes a slight screeching sound for approx 10 sec. when powered on.


I guess the blanket draped over the TV is intended to give it a "timeout". Anyway, you will likely conclude eventually that the internal power supply has failed.

Jan 02, 2014 | Memorex MLT1921 19 in. LCD TV

2 Answers

Klipsch soundbar (SB1) won't power on ... green light on power adaptor seems to trip and go off when I power on the SB


I have read that this may be due to the order in how the AC adapter is attached to the sound bar. After some research I found that you need to unplug the AC adapter from the wall and the sound bar and let it sit for about 15min. Then flip the power switch "ON" on the sound bar and connect the AC adapter to the rear of the sound bar. Lastly, plug the adapter into the power outlet.

Feb 21, 2013 | Klipsch Audio Players & Recorders

1 Answer

When using Firewire bus to power the sound card my


It's likely that the FireWire bus isn't meeting the power needs of your card. Just use the external supply since there isn't too much you can do.

Jul 13, 2010 | Edirol FA-66 Sound Card

1 Answer

Clicking sound when power is off


have the power supply tested or use a diff power supply in your cpu, just to see if the clicking sound will disappear,if it disappear then a power supply replacement would be beneficial, if not then have your cpu check by a qualified tech to see where is that sound coming from

Nov 21, 2009 | Gateway Bestec ATX-300-12EB3 305w Power...

1 Answer

Recently when powered up, sometimes the sound


Let verify first to narrow down to where the problem can be. First, attach the powered PC speakers to the Audio Line out RCA jacks to see if you can get the sound there, if you do, then the problem can be in the power amp circuits, if you do not get the sound at RCA jacks, then the problem can be in the sound processor circuit. Please post back what you find.

Nov 19, 2009 | Sharp Aquos LC-32GD4U 32 in. LCD HDTV

1 Answer

Red light flashes on power switch, but no picture or sound on tv


tv will not power on. red light on switch blinks. power relay clicks, but no picture or sound.

Jul 28, 2009 | Toshiba DVD Recorder AND Series2 TiVo...

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