Old school Kicker amp repair

[napacarmobile]

I have 3 amps that need repaired
Kx800.4, Kx600.4, Kx300.4
All come on and play but have a buzzing, left channel comes and goes and a RCA input issue seems if I wiggle the connection in n out it plays fine for a moment

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[deez283 10+ year member]

All 3 have a buzzing left channel? You tried a different rca cable already? seems strange all 3 of your amps would have the same issue.

 

[Doxquzme Premium Member]

/\ ditto!

 

[napacarmobile]

Not all 3 have same issue. Was just giving an example of the issues
Each one has its own issue
Yes I did replace rca cables and swapped left and right to comfirm is was an output issue
Looking for someone to repair them