Blew up my tube preamp!

[JoelG 1]

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?

[doogie44 387]

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

 

 

[LogicprObe 7,131]

 

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

[A J 1,868]

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

[doogie44 387]

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;

[doogie44 387]

Suggest you remove the offending tubes and inspect the pins carefully

[LogicprObe 7,131]

 

I was wondering about that 'n' in brackets.

What's that mean?

[aussievintage 1,828]

They do seem to be valid replacement/substitutes

 

http://tdsl.duncanamps.com/show.php?des=6N23P*

http://tdsl.duncanamps.com/show.php?des=6DJ8

[JoelG 1]

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 

[Muon N' 3,154]

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 October 19 by Muon N'

[JoelG 1]

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? 

 

[JoelG 1]

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

[Muon N' 3,154]

If you want to compare data on 6Н23П

 

and e88cc

[JoelG 1]

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.

[Ihearmusic 361]

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......

[Addicted to music 6,160]

2 hours ago, A J said:

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

I get high.....