JoelG 1 Posted October 19 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? 0 Quote Share this post Link to post Share on other sites
doogie44 391 Posted October 19 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 1 Quote Share this post Link to post Share on other sites
LogicprObe 7,140 Posted October 19 What do you mean by 'as far as you can tell'? 0 Quote Share this post Link to post Share on other sites
A J 1,868 Posted October 19 once that magic smoke gets out...……………………………….:( 1 Quote Share this post Link to post Share on other sites
doogie44 391 Posted October 19 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; 1 Quote Share this post Link to post Share on other sites
doogie44 391 Posted October 19 Suggest you remove the offending tubes and inspect the pins carefully 1 Quote Share this post Link to post Share on other sites
LogicprObe 7,140 Posted October 19 I was wondering about that 'n' in brackets. What's that mean? 0 Quote Share this post Link to post Share on other sites
aussievintage 1,871 Posted October 19 They do seem to be valid replacement/substitutes http://tdsl.duncanamps.com/show.php?des=6N23P* http://tdsl.duncanamps.com/show.php?des=6DJ8 1 Quote Share this post Link to post Share on other sites
JoelG 1 Posted October 19 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 0 Quote Share this post Link to post Share on other sites
Muon N' 3,206 Posted October 19 (edited) 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' 1 Quote Share this post Link to post Share on other sites
JoelG 1 Posted October 19 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? 0 Quote Share this post Link to post Share on other sites
JoelG 1 Posted October 19 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 0 Quote Share this post Link to post Share on other sites
Muon N' 3,206 Posted October 19 If you want to compare data on 6Н23П and e88cc 1 Quote Share this post Link to post Share on other sites
JoelG 1 Posted October 19 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. 0 Quote Share this post Link to post Share on other sites
Ihearmusic 361 Posted October 19 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...... 1 Quote Share this post Link to post Share on other sites
Addicted to music 6,187 Posted October 19 2 hours ago, A J said: once that magic smoke gets out...……………………………….:( I get high..... 1 Quote Share this post Link to post Share on other sites