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Re: rca televison RCA D27649
This looks like the audio amplifier or the audio processing circuitry might be malfunctioning. To troubleshoot this you may have to use audio injection and detection to troubleshoot this problem. You would inject a known good audio signal and detect it throught the circuit. Since it looks like you are unable to control or have very little control over the audio. I would lean more towards the audio processing circuitry as being the problem.
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very little sound and it does take quite a while to heat up .. you should feel warmth in 15 min .. if it doesnt heat at all then there might be an open "over temperature" fuse inside ... one of the good things about this heater is that its so quiet ..
You need a bigger amp and make sure its a two channel. Four and five channel amps are for mids and highs. If you want real bass get a two channel. If you dont want to buy a bigger amp, Go get a capacitor. It acts like a battery charge storage for when your sub needs to hit those real low notes. It takes a lot of power. Also if you get a capacitor your altinater that charges your battery will not have to work so hard keeping your battery charged, Thus not wearing out your altinater and not having to replace it so soon because it will happen.
Another quick fix is turning your gain down. I turn my gain up half way, maybe a little past half way. You might not get the bass hitting as hard but at least it wont shut off on you.
A half volt will not make any difference. Sounds like the power supply is malfunctioning. Start by trying a different one. Keep in mind that you may have fried the new motherboard by using a faulty power supply. Popping sounds indicate a short or loose/exposed wires, and are never good with any electrical device, especially a laptop since they are sensitive to power fluctuations to begin with.