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JoelG

Blew up my tube preamp!

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Hi all, just swapped out  valvo e88cc tubes from my sonic frontiers line 1 se preamp with 6 nos 6N23P-(n) VOSKHOD tubes and as soon as it switched off standby their was a loud pop and smoke rising from my poor machine.. 

As far as I can tell these tubes should have been a direct swap but obviously something wasn't right.

Any ideas please?

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Is it possible that the pins were bent/sheared when re-seating? This happened to me once. Possibly the valves were faulty!

 

Seems like a direct replacement.  Sonic Frontiers circuits don't have any weird requirements, do they?

 

That's all I've got. Good luck

 

 

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What do you mean by 'as far as you can tell'?

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once that magic smoke gets out...……………………………….:(

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Typical heading on tube websites:

 

Russian quality 6N23P tube. Equivalent to the E88CC / 6DJ8. Military equipment. Made by Voskhod plant (Rocket logo). NOS and never used before.

 

  • Name: 6N23P;
  • Type: Double triode;

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Suggest you remove the offending tubes and inspect the pins carefully

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I was wondering about that 'n' in brackets.

What's that mean?

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1 hour ago, doogie44 said:

Is it possible that the pins were bent/sheared when re-seating? This happened to me once. Possibly the valves were faulty!

 

Seems like a direct replacement.  Sonic Frontiers circuits don't have any weird requirements, do they?

 

That's all I've got. Good luck

 

 

 I checked and all looked good?

Thanks 

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1 hour ago, LogicprObe said:

 

I was wondering about that 'n' in brackets.

What's that mean?

6Н23П Cyrillic, reads 6N23P in Latin

 

H (n) means double triode.

 

Confusing isn't it :)

 

This may or may not help.

https://en.wikipedia.org/wiki/Russian_alphabet

Edited by Muon N'

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1 hour ago, LogicprObe said:

 

I was wondering about that 'n' in brackets.

What's that mean?

On the tubes are written 6h23 and looks like an n or a symbol that resembles an n? 

 

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1 hour ago, doogie44 said:

Typical heading on tube websites:

 

Russian quality 6N23P tube. Equivalent to the E88CC / 6DJ8. Military equipment. Made by Voskhod plant (Rocket logo). NOS and never used before.

 

  • Name: 6N23P;
  • Type: Double triode;

Yes, that fits the seller info on eBay, t

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1 hour ago, LogicprObe said:

 

What do you mean by 'as far as you can tell'?

From the seller and reading forums and sites on net.

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How about open it up ( if you comfi of doing so) and show us a pic of the internals. It might be just coincidental and it would have happened sooner or later with the old tubes.

Smoke could come from a blown resistor that was working on it's limits. Might be a blown cap in the power supply. (would leak some oil out the bottom though). Could also be a diode......

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2 hours ago, A J said:

once that magic smoke gets out...……………………………….:(

I get high.....

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