Very interesting! I love the old tube tester.

Subscribed! This reminds me of rejuvenating TV picture tubes back in the day

Thank you such a great video I would like you to explain as you go when winding transformers your English is very good thank you again

A valuable lesson. Thank-you.

Great video - thank you!

Amigo na minha opinião o som dos amplificadores valvulado é o melhor som que existe. Abraço Rio de Janeiro Brazil

Amzing video and knowledge! Thanks for sharing!

Nice! Videos are well done . Love the music

Those string just buzzing like the breeze. Exquisite taste

hello i just got 2 gz shuguang gold rectifiers im about to compare an old one to see if i can hear a difference but im told they are rugged im using them for a guitar amp so seeing this post interested me.but ive got no equipment to try this sort of thing out or much knowledge i just trust my ears & analogue is king great post mate peace....

Excellent! Thank you...

I had a Technics floor speaker like that, and it sounded surprisingly very good.

Wow. Gotta try it on my 813 that arced over during tesla coil use.

this man has some serious gear and skills!!

awesome thanks

Thankyou sir

어떻게 툽을 살릴수가 있지요. 신기하네요.

Wonder if this would work on a "Zombie" tube where I accidentally did something similar: heater was at 9V for less than a second. Stupid I know but visible light emission is very low compared to another identical tube under same bias etc. I did hear that emissive coating damage is supposed to be irreversible but maybe not, plan is to try a variant of this where negative voltage is applied with tube at +170 Celsius so the coating is persuaded to re-coat the now cold heater by a variant of sputtering as this is essentially how it was applied at the factory. Might work on age weakened VFDs as well which would be excellent!

I have a Full Music Mesh plate/grid 300b tube. Working fine, not many hours and then one day I turned on the amp and nothing. Very disappointing. The mesh plates are nice sounding and look wonderful.

Excellent video ! Can you give a little more details on how is this working and what are the perfect voltage conditions for heating and time (I saw you put a little bit more than the normal value, aswell for the 45's you also rejuvenated). Thank you for the sharing of this excellent knowledge !! Now I know that I won't ever throw a "bad" tube anymore !

after you complete your process might i suggest that you reflash the getter in the tube.in some cases this may be helpful.

Excellent

Am I the only one who thinks that TV7 box looks amazing? All the analog dials and buttons. Young, have you considered making an analog, modular, synth?

Hi, great video. I have a custom 12 X 6550 (kt88) amp that red played all its output valves very quickly. The amp was turned off very very quickly, I turned down the bias pot and tried again. Although not going into red plate again, the power output was much less. The valves were all with less than 24 hours use. I suspect a capacitor. I am wondering if I might need to go through your process. I don't want to buy 12 new matched valves! I'm hoping the valves weren't taken too far and can be salvaged!

좋은 정보 감사 합니다. 45 튜브도 같은 방법으로 재생할수 있는지요?

Wow, I’m very surprised that works! It would seem like while you’re stripping your heaters you’re building a layer on your cathode, AKA cathode poisoning. I wonder if there is a way to heat the tube to fix this rather than apply heater voltage that long. I suppose if a tube is dead, one is less concerned with shortening its life🙃.

Is this any different than leaving tubes in your guitar amplifiers with the standby switch on - so only the heaters are getting voltage?

I am so jealous, you can make your own tube amps how I wish someone will build for me.

Dear Mr. Ahn: I have a question; years ago, 1 of KT88 burnt out , among 4 tubes in my amplifier, the tube it burnt, the element lighting up abnormally, just like fire, I turned offy amplifier immediately. Would that burnt tube burn out the amplifier and speaker too? Looking forward to your advice🙏

What was the problem though? Did the intense heat of the short change the structure of the metal in the filament? Was this an annealing process?

@3:41 Is that box of cupcakes a precision test instrument? If so......... please explain how they work😉

Can this be done with 6l6gc tubes? What voltage and amps would be used?

What do you mean by "burning filament for 2 hours"...? 3:23 How do you "burn" a filament...? How much voltage are you putting across the filament...? How does this give a tube back it's life...?

Can you tell me how to find out what tube I have , when the writing is erased off the tube?

Is there any way to rebuild 4-400 ....?

Hi, I can’t clearly see how you have revitalised the valve 2.

初めまして、オーストラリアからKZfaq 見させていただいています。Fluxionの商品はオーストラリアからですとどの様にしたら購入できますでしょうか？

歩いても、歩いても。。。。

Tube life is determined but the coating on there cathode and can not be regenerated when gone next

The tube was damaged. It was NOT a tube that lost it's ability to conduct from old age. You cannot revitalize a vacuum tube unless you disassemble it, replace the filament (or cathode if equipped), put in a new getter material, and then re-vacuum, seal, and initialize the getter to remove unwanted gases.

take that russiA

ok not a tech guy what did you use to recharge your tubes

이분 얘기하는거 별 도움이 안됩니다. 혼자 얘기하다 맙니다.