[lucky_star]

I have just received the rsa raptor, which is my first tube amp. My tubes are Amperex eec186 and Philip 5687.
whenever I turn on the amp, i alway see a flash light(just like oxygen burning) on the tube Amperex not the other two Philip(no flash light). I am so scared about that and think my Amperex is broken?????
Is it normal or unusual for the tube? any advise plz
thanks

 

[wnmnkh]

MAX Technical Highlights

As you see, tubes make a nice light.

Did you actually tested your amp see if it is working?

 

[ClieOS]

Normal. Some tube will flash and some don't, depends on the original design of themanufacturer.

btw, this thread should go to amp forum.

 

[ericj]

Quote:

Originally Posted by wnmnkh /img/forum/go_quote.gif MAX Technical Highlights As you see, tubes make a nice light.

glowing and flashing are two entirely different things

 

[tomb]

Quote:

Originally Posted by ericj /img/forum/go_quote.gif glowing and flashing are two entirely different things

Yep - nice lights in the tubes are put there by Millett Hybrid and Millett Hybrid MAX builders.

We install colored LED's under the tubes - a tradition with a DIY Millett or MAX.

ClieOS is also correct - I've had EI 12AU7's that often flash when turned on. It looks almost like a light bulb burning out, but is perfectly normal for that brand and type of tube.

 

[wnmnkh]

/facepalm

Yes, forget that those are coming from tube LEDs...

 

[ClieOS]

Quote:

Originally Posted by tomb /img/forum/go_quote.gif I've had EI 12AU7's that often flash when turned on. It looks almost like a light bulb burning out, but is perfectly normal for that brand and type of tube.

Yeah, my United Electronic 17AU7 flash too