Hello All
I just had a KT-88 start sparking internally.
On the tube tester, It sparks and glows bright blue constantly when the
test button is depressed. No shorts.
Whats this mean?
Thanks
Mike m

Hi Mike,

Your tube has lost its vacuum. Don't put it in your amp, it won't be happy.

Raymond

Mike Mueller wrote:

Hello All
I just had a KT-88 start sparking internally.
On the tube tester, It sparks and glows bright blue constantly when the
test button is depressed. No shorts.
Whats this mean?
Thanks
Mike m

"Mike Mueller"

I just had a KT-88 start sparking internally.
On the tube tester, It sparks and glows bright blue constantly when the
test button is depressed. No shorts.
Whats this mean?



** The atmosphere has got back in.





.............. Phil

Thank you all.
The Getter never turned white. Still, loss of vacuum?
Mike M

"Mike Mueller"

The Getter never turned white. Still, loss of vacuum?


** Not enough O2 inside just yet - wait for it.




............ Phil

Mike Mueller wrote:

Hello All
I just had a KT-88 start sparking internally.
On the tube tester, It sparks and glows bright blue constantly when the
test button is depressed. No shorts.
Whats this mean?

Time to buy a new one.
The tube is stuffed.
They do this blue death dance at the end of life.

Patrick Turner.


Thanks
Mike m

If it's glowing blue, it's gassy.

Mike Mueller wrote:

Thank you all.
The Getter never turned white. Still, loss of vacuum?
Mike M