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Component placement and hum

PostPosted: Sat May 07, 2016 1:19 am
by croudyj
Hi,

I've noticed that people seem to fit the PCB quite close to the front of the chassis. Is there a reason for that? I'm having some trouble fitting everything inside my chassis but I'd have no trouble if I could move the PCB so it's about 1.25" away from the front. There's plenty of room to do that. If I did, the middle tube would be about an inch closer to the power transformer. Does anyone know if doing this could induce hum from the transformer into that tube? That would be a disaster so I'd like to know if it's even possible before I go ahead and drill the holes. Also, would it matter if the power switch was close to one of the big orange caps? Could that create hum?

Thanks,

John

Re: Component placement and hum

PostPosted: Sat May 07, 2016 8:50 am
by TomMcNally
John - You should be OK with placement. Is the power transformer on top of the chassis ? Twist the wires to the power switch and keep it as far away as practical. Same with the pilot light, twisted pair.

Re: Component placement and hum

PostPosted: Sat May 07, 2016 12:14 pm
by croudyj
Hi Tom,

Yes, the transformers will be on top of the chassis, at the back. The usual place, I guess.

Thanks,

John