Korg Forums

davc · Joined: 19 Jan 2007 Posts: 47 Location: Tampa, FL

has anyone figured out how to get at the tube to change it ...????????

must be some kind of trade secret ... i've seen this question asked several times the last few years ...

but No one has ever answered it ....!!!!!!!!

as i'm sure most of our Extremes are out of waranty .... please let us change out tubes ..... before i take my dremel tool to the cover ..!!

thanks for any info ..!!!!!!

Sincerely;
Dave C.
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GregC · Posted: Sun Oct 14, 2007 9:42 pm Post subject:

is there a problem ?

you prefer a red light vs the blue light ?
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davc · Joined: 19 Jan 2007 Posts: 47 Location: Tampa, FL

yeh ... the problem is , that i can't get a usefull answer ....

maybe i'd prefer a different kind of tube ....

don't give a flying fig regarding the stupid light ...
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GregC · Posted: Tue Oct 16, 2007 1:02 am Post subject:

sooooo

what kind of tube did you want and how would it be different from what Korg has spec'd out ?
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davc · Joined: 19 Jan 2007 Posts: 47 Location: Tampa, FL

that's not the question or the topic ...

the question is very simply , How do you get at the tube ....??

not really trying to get into tube discussion ...
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shrike · Posted: Tue Oct 16, 2007 6:28 am Post subject:

That kind of attitude will get you no where.

If your tube is broken, we could deal your problem.

To get at the tube,, as you said it, dismantle Extreme and take the cover from inside. There are good chances you couldn't arrange it back the way it was and get it to work again, but you'll get your tube.

BasariStudios · Posted: Tue Oct 16, 2007 6:34 am Post subject:

And even simpler, if its broken you take it to a service and they replace it for you.
Yours is not to worry how they gonna do it as long as it works.
If you cant pay for it? Who cares? The waranty expired, wait till you save money.
We are all getting sissy in here. Its enough, as Shrike said.
Anything can be FIXED or REPLACED today, no need for being PARANOID.
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jazzman1 · Senior Member Joined: 30 Jan 2003 Posts: 283

I think you guys missed his point. He asked how to get to the tube. The answer he got was "why do you want to know" I would think most would like to know this. I know I would. I would hate to take mine in just to change a light bulb. I have tube guitar amps with the same type tube that I change on demand.

GregC · Posted: Tue Oct 16, 2007 2:46 pm Post subject:

He doesn't have a point. He simply wants to mess around and try to experiment with the tube in his Extreme

Well, hullo. This is not an tube amplifier where you can do that. The Extreme is more complex and 99% likely is not designed for an amateur to mess around with inside components
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jazzman1 · Senior Member Joined: 30 Jan 2003 Posts: 283

GregC · Posted: Tue Oct 16, 2007 5:31 pm Post subject:

the answer is simple

You cannot access the tube in the Extreme

Thats the way its designed.

And I am not worried about it 'wearing out ' 8 years in the future or 15 years in the future
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6fingers · Joined: 05 Dec 2006 Posts: 6

wow, this is so helpful.

The tube can break i think, when there's a mechanical shock - while on the road especially. So far I haven't had problems, but i really fear this while on the road. Besides, I don't really think the tube lasts more than 5 years if used on regular basis by a working musician. I could be wrong, but it's basically a lightbulb, and it just, well, burns out.
The tube is extremely easily found, and it would be very useful to find info on how to get there.
If I will try, I'll sure let everyone know. I'm definitely not sending my 88 to Germany to replace a tube (me being in eastern europe). I think the transparent cover can be removed carefully - it should be a lot easier than through the back.

GregC · Posted: Thu Oct 18, 2007 12:28 am Post subject:

tomleitch · Junior Member Joined: 10 Sep 2007 Posts: 65

when i had my extreme in bits it looked like you could get at the tube from the inside, the tube mounting piece is screwed to the moulded case and looks like it can be removed that way - not 100% sure though i just remember thinking it looked like the way to do it at the time.

If anyone has actually done it i would be interested to know how too.
Incidentally i've got some photos at home of the insides of the extreme which may help. If anyone wants a look let me know and i'll post them when i get chance.

shrike · Posted: Thu Oct 18, 2007 8:59 am Post subject:

Regards, Tomleitch, just few things:

1. Extreme's tube lifetime is longer that Extreme's market lifetime - we will replace all our Extremes before tubes begin to malfunction (10-15 years lifetime, that is very conservative build tube, long persisted on market and used in many other gear, not only in Extreme)

2. It is very hard, if not impossible for an amateur (meaning in assembling and disassembling keyboards) to change that tube,

3. there are specialized workshops for something like that

4. I don't get all the fuss about that tube - are you all just interested how it is fixed, can you change the color, can you put some other tube, what, I don't know - it is made the way it is and it's supposed to be exactly that way, not to mess around with it, keyboard isn't a car so you can change spoilers or something like that

5. if you are interested to change a valve in your car's engine, would you do it yourself or would you go to mechanic?

The same thing is with your keyboard.
Don't change it, don't disassemble Extreme (or any other keyboard, btw) if you are not precise mechanic and KNOW exactly what you are doing.

Friend of mine tried that, so I know what I'm saying, later he took to a service (because he broke it, naturally), and then got it repaired.

Now, don't take this bad - my only intention is to give you good advice.

Regards.