harmonic balacer has gone bad?

[buttermeg]

when i started hearing noises form the hood the mechanic said that it could be because of the Harmonic balancer which went straight over my head as i didnt know what it is .

can some one please tell the symptom's of when this goes bad.

thanks

[ashok]

Harmonic balance is a method used to calculate the steady-state response of electrical circuits. It is a frequency domain method for calculating the steady state, as opposed to the various time-domain steady state methods. The name "harmonic balance" is descriptive of the method, which starts with Kirchoff's Current Law written in the frequency domain and a chosen number of harmonics. Effectively the method assumes the solution can be represented by a linear combination of sinusoids, then balances current and voltage sinusoids to satisfy Kirchoff's law. The method is commonly used to simulate circuits which include nonlinear elements.

BAD HARMONIC BALANCER NOISE

http://www.youtube.com/watch?v=3Ridr6wp0N4

[buttermeg]

thanks