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grounding issue with my lafigaro 339

post #1 of 4
Thread Starter 

long story short I found that one of the screws were missing when I took it out of the box forunately I found it.. but the right channel humms could it be the 2 screws that won't tighten ? I took one of the other allen screws placed them in the hole where the 2 other screws don't tigthen up and it fits perfectly... should I just get 2 similar screws and that would fix my problem ?

post #2 of 4

Did you check whether the wallplug is grounded? 

post #3 of 4
Thread Starter 

so the right channel cuts out making the volume gain way less than the left channel before all it did was make a humming noise now it cuts out.... 

post #4 of 4

Try switching tubes to see if that's the fault.

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