[wilsynet]

Try giving the 6SN7 tubes a few good whacks on top with your knuckle.  During shipping or moving, debris can get spread around and you want to shake the debris loose.

Ralph at Atma-Sphere has recommended this in the past and its worked for me a couple of times.

[skite30]

Ok fair enough. My portugese is a bit rusty. Putz has a different meaning in North America

[FullRangeMan]

I afraid to ask, but what is??

[Quiet Earth]

Try giving the 6SN7 tubes a few good whacks on top with your knuckle.  During shipping or moving, debris can get spread around and you want to shake the debris loose.

Ralph at Atma-Sphere has recommended this in the past and its worked for me a couple of times.

Just to clarify,,,,  this is something to try with the power off, isn't it? I have always read not to tap on tubes while they are on, but I am no expert.

[FullRangeMan]

Once I tap a tube on my hand and appear a loose piece of glass inside
I will never tap a tube again.

[wilsynet]

Just to clarify,,,,  this is something to try with the power off, isn't it? I have always read not to tap on tubes while they are on, but I am no expert.

Yes, power off.  I've done with tube removed and with tube inserted.  But in the latter case, with power off.

[skriefal]

Once I tap a tube on my hand and appear a loose piece of glass inside
I will never tap a tube again.

The loose piece of glass was almost certainly already there before you tapped the tube.  You simply moved it.

[FullRangeMan]

Something happen in the postal mail transport, it had delayed +60 days to arrive.
The carton box was more damaged than the usual.

[SteveFord]

Did a light tap or two cure the rice krispies?

[skite30]

Aactually one of them hasnt made a noise since tapping it. The other one may end up in the do not play drawer.

[medium jim]

Sounds like Kevin is keeping his paycheck!

Jim