Question about Audio Players & Recorders
Static electricity shorted from my finger to the off / on switch. Something shorted out and now I have no sound. The power light still comes on. There is nothing obvious on the circuit board. Any ideas?
Click start control panel administrive tools computer management device manager scroll to sounds video and game controllers ther might be a yellow question / exclamation ? ! mark or a red X right click to update driver
click start control panel sounds and audio devices select advanced there might be a tick in the mute box untick it or select audio from the microphone drop down list
make sure you have the right one selected and in the volume box make sure the microphone box has a tick in it or select the voice tab and make sure that you have the right media selected also select volume make sure the box for microphone has a tick in it
if your computer came with a motherboard disk the drivers could be on it
hope this helps
Posted on Feb 14, 2012
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Posted on Jan 02, 2017
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Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
You can test the speaker for open or short by touching a small battery to the speaker wires. It should make static or click sounds. If not, it's dead. If it sparks and akes no sound it's shorted and dangerous to any amp.
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