HAGEN voice is not stable -Solved-

[james001]

Hello everyone

I come form china,I have a DIEZEL HAGEN.
Recently, i met a problem.
The hagen sometimes small sometimes loudly,the voice is not stable,i recorded a video, should be able to explain the problem:
http://v.youku.com/v_show/id_XMjQ4MTUwODY0MA==.html

Who knows what causes it?
Have a great day!

 

[SaulGoodman]

Hi, welcome to the forum =)
Its looks like it might be a power tube issue.
Does this occur on all channels ?

 

[james001]

Hi, welcome to the forum =)
Its looks like it might be a power tube issue.
Does this occur on all channels ?

Thank you for your reply.
Currently found 3 and 4 channels have such a problem, the 1 and 2 I try again. You mean El34's problem?

 

[SaulGoodman]

The Hagen has originally kt77s, but yes the big tubes in the back =)

 

[james001]

The Hagen has originally kt77s, but yes the big tubes in the back =)

Do you mean that I need to replace the post-level tube? thanks

 

[Peter Diezel]

Got your email.

Welcome to the board

 

[james001]

Got your email.

Welcome to the board

Does the hagen apply to this method?

Thank you for your help!

 

[james001]

Got your email.

Welcome to the board

Hi Peter:

Today I opened the hagen, I marked the location of the measurement point is bias it?

thans~!

 

[james001]

After replacing the JJ KT77 everything is normal, thank you!