Humm coming from speakers - can't get cable to work
I just purchased a used Akai 27" LCD HDTV Model # LCT701. Now that it is powered up, there is a hum coming from the speakers. I know it is from the speakers because it goes away when I use the mute, and when I wiggle the cable connection I can hear the hum change, as if it is coming in with the cable signal.and it goes away completely when I disconnect the cable as if it is some sort of misread signal.
Also, I screwed the coax cable into the only screw jack on the back, labeld "rf input" but for some reason am not able to get more than one channel. when I choose sources and roll through the sources with the remote, most show "no signal", except for the DVD. here is a list of the screen shots and what they say.
VGA - blue screen - text reads - main no signal AV - blue screen - text reads - Main no signal S- video - blue screen text reads - main no signal Component - blue screen - text reads - main no signal Channel 5 - Dr. Phil followed by Oprah
I am wondering if I am plugged into the right port and also if I need a filter to stop the buzz? Maybe I'm plugged into the wrong place and the signal is being misinterpreted as noise?
Re: Humm coming from speakers - can't get cable to work
The RF input is the correct one for a cable signal. The other sources use the RCA and other ports which you can connect to other devices, like DVD or VCR players.
If the humm noise only happens when you're on the TV channel then it's likely just the station. Try changing the channel and see if that helps, and make sure the coax is screwed in all the way. Also make sure the other end, if connected to a VCR or other stuff, is tightly attached. If you share cable with many other people and the signal has snow (white spots on the TV), then you may need to buy an RF signal amplifier to reduce the noise.
Source changes the input (RCA versus coaxial versus component inputs), change the channel for different channels..
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We need to verify if the problem is in the preamp or poweramp sections. Hook up the powered PC speakers to the AUDIO Line out RCA jacks and verify that sound is OK there, if it is OK, The problem will be in the power amp sections that drive the speakers. If it sounds bad at the RCA jacks, the problem will be in the sound processor board which mean the main board will have to be replaced, same if the power amp is bad.
I don't think the Akai remote is designed to work with cable or satellite service. I have to use both remotes & I have Direct TV.
Try unplugging the TV for a few minutes then plug it in and try the remote again. I had the same problem shortly before my Akai LCT2721AD quit working altogether. Three 1000uF capacitors blew in the power supply. Bought 3 new ones and replaced the blown ones myself rather than pay over $100 for a new power supply. Works fine now.
Hello, I can repair your power supply which is most likely the reason for this failure. I charge a flat rate of $100 + return shipping to recondition the power supply.
I have created an Instructable located here http://www.instructables.com/id/AKAI_LCT2715_Power_Supply_Removal/ which will guild you through the removal of the power supply from the TV. Once you have the power supply removed you can ship it to me for repair. E-Mail me at (twizted at dragonmodz dot net) for shipping address and to discuss any other questions you may have.
You do know that this model TV takes about 5-10 seconds to come on after you press the on button, right?
Press it once to get the green LED, then wait. If it doesn't display the blue AKAI splash screen within 15 seconds, the TV is not working as it should.
Also remember that this model has two RF input jacks. As seen from the back of the TV, the jack on the far right is the one to use for analog TV, analog cable, coax out to TV from a cable box, or rf out from a vcr.
Don't use the one on the far left. It is for input to the ATSC OTA DTV tuner only.
Most likely there is a real problem with your TV, but in the video, you are pressing the on/off button in rapid succession. That will never work with this model.
I don't know if I solved the problem. I find though if I turn the TV off and unplug it and then plug back in when I want to watch it - it works. I don't know why but it does. My remote still does not connect to the LCD but I have cable HDTV so chanel changes work from that control.
I am pretty ********** that it is only a year old and this has happened but what can you do? We live in a disposable world.
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