| ihodiputah_510 |
there is a problem in my yamaha amp.
it has a sound but there is scratching sound over it.even the volume control is in minimum level.
oppps!!!there is another prob.,the first time i press the power button,there is a voltage surge-like sound hiting the speakers.
any suggestions would be greatly appreciated. |
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| Netlist |
What type# has your amp?
/Hugo |
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| clem_o |
Hi -
"surge" sound on turn-on may mean that your amplifier is giving out a DC offset at its speaker terminals. Take a VOM and measure. A normal amp should have pretty close to zero DC volts, a few mV to a few tens of mV offset should be ok.
Scratchy sound could be bad potentiometers, bad switches, or bad transistors (usually in the amplifier's front-end, if discrete)...
Netlist is right - the model# of your amp would provide some with the knowledge of exactly what kind of amplifier design your unit has, and could give a better idea of the problem...
Cheers! |
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