kuisis Posted December 19, 2004 Share Posted December 19, 2004 I spent the whole day listening to my system yesterday, the first time in forever. It sounded great but when I went to shut the amp off the Scott 233 I noticed all the tubes had a blue glow towards the back of the amp. I didn't notice a change in the sound, but I always thought that blue tubes were going bad. The tubes by the way are westinghouse double getters. Should I start looking for new tubes? Quote Link to comment Share on other sites More sharing options...
Duke Spinner Posted December 19, 2004 Share Posted December 19, 2004 don't worry 'bout the nuclear blue glow .. ....what to watch out for is a red/ orange glow on the screens this means the screen resistors is failing, soon you have a runaway tube .. then ... smoke Quote Link to comment Share on other sites More sharing options...
3dzapper Posted December 19, 2004 Share Posted December 19, 2004 Have you been hitting the Viagra again kuisis? The blue glow is not a problem. To a degree it is visible in most high voltage tubes especially large ST shaped triodes. Enjoy the show! These are the RCA 2A3s in my Wright amps: Rick Quote Link to comment Share on other sites More sharing options...
kuisis Posted December 19, 2004 Author Share Posted December 19, 2004 If I was hitting viagra I wouldn't have been looking at the tubes on the amp!! Thanks for the input guys and I guess I was just paranoid. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted December 19, 2004 Share Posted December 19, 2004 Enjoy the light show ! It normal. Oh and its the plates that you watch for the cherry red syndrome not the screens. (plates are the main large gray structure inside the tubes) Craig Quote Link to comment Share on other sites More sharing options...
mike stehr Posted December 19, 2004 Share Posted December 19, 2004 If you get a white,pink, and purplish glow collecting around the Mica spacers at the bottom of the plates, then that may mean the tube is getting gassy. Cathode to heater short won't be far behind. You have to look from the top of the TJ 300B to see if the filaments are even on, even in the dark. No light show here. Good sound to me though... Anybody into Thrash(dunno why I'm posting this here...), may wanna pick up Slayer's "Still Reigning" DVD. I picked it up for 11 bucks. So thinking when I get home and listen and watch it, that the recording will be all hiked up and harsh as hell. And the poor 300B amp would spit and hiss it all out. The DVD is recorded rather well IMO, the 300B amp seemed to pump out Jeff and Kerry's guitars nicely. With the SVS subwoofers at 40 Hz, Dave was right there too..... I enjoyed it. whatever...... Quote Link to comment Share on other sites More sharing options...
kuisis Posted December 19, 2004 Author Share Posted December 19, 2004 Don't know if you would consider it thrash, but the newest Motorhead kicks also. Quote Link to comment Share on other sites More sharing options...
kuisis Posted December 19, 2004 Author Share Posted December 19, 2004 Thanks Banned; Quote Link to comment Share on other sites More sharing options...
radiob Posted December 19, 2004 Share Posted December 19, 2004 ---------------- On 12/19/2004 11:58:11 AM 3dzapper wrote: Have you been hitting the Viagra again kuisis? The blue glow is not a problem. To a degree it is visible in most high voltage tubes especially large ST shaped triodes. Enjoy the show! These are the RCA 2A3s in my Wright amps: http://forums.klipsch.com/idealbb/files/glow1.jpg" border="0"> Rick ---------------- Rick, use a tripod, the results are much better! Quote Link to comment Share on other sites More sharing options...
kuisis Posted December 19, 2004 Author Share Posted December 19, 2004 Viagra and a tripod, interesting combination. Thanks for the responses guys Quote Link to comment Share on other sites More sharing options...
jt1stcav Posted December 19, 2004 Share Posted December 19, 2004 KT88s glow with a blue florescence (as well as my 300Bs)... One of my Shuguang 300BC graphite anode output tube's blue glow even flickers a little with the beat of the music...if it wasn't so damn hot standing over them while it's on, I'd almost enjoy the light show it produces! Quote Link to comment Share on other sites More sharing options...
Daddy Dee Posted December 19, 2004 Share Posted December 19, 2004 Ryan, Good to see you posting. Hope all is well with you. Quote Link to comment Share on other sites More sharing options...
dodger Posted December 19, 2004 Share Posted December 19, 2004 As one of my favorite colors is blue, I have always looked for it in tubes. Some have said it's a problem - I believe they are looking to sell tubes. On 1 of my McIntosh 240s the blackplate 6L6gcs have the nice tube glow plus they will have a blue glow. On my MC-60s they will also have the blue glow. All tubes have been tested with nothing wrong. Enjoy the glow. Quote Link to comment Share on other sites More sharing options...
Rdmarsiii Posted December 19, 2004 Share Posted December 19, 2004 Will the 5811's ever have a blue glow? When I get my tube amp, I want blue tubes Quote Link to comment Share on other sites More sharing options...
dodger Posted December 19, 2004 Share Posted December 19, 2004 Don't recall the 5811s. But if they behave like the Amplifier outputs like 6L6GCs,KT-88s, EL-34s you'll have a "blue Christmas." But they are a sub -miniature, most likely pre-amp. So chance of blue is slim. dodger Quote Link to comment Share on other sites More sharing options...
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