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a rejuvenator is a good investment if you have a sizable collection and you enjoy doing a lot of the work yourself, especially monitor repair. it can take what was essentially a dead tube and give it years of additional life, but not in every case.
my rejuvenator cost me $40 shipped and i've already saved two tubes from the scrapheap, with several more in line. i've also had one that has totally failed all attempts to revive it, but i feel a lot more comfortable dumping it now that i know it's toast.
That price is for a new unit. Most people buy a used rejuvenator off of eBay. The 467, 470, 480, and 490 are the rejuvenators most people pick up for under $50.
I would like to state for the record that if you have weak guns, you should try cleaning them first before jumping to the full rejuvenate setting. (B&K rejuvenator)
I think I just toasted the green gun on a "good" G07 tube the other night. Couldn't find anyone to kick me in the nuts for doing that so I'll just berate myself here. I did have a tube from another monitor with a high-impedance yoke that I just swapped in. Worked like a champ.
So Clean first, if no improvement, then rejuvenate. For those of you that don't know what I am talking about, it is basically a gentler, lower power setting to clean the guns than a full blast high heat cooking. An oversimplification but adequate for our purposes.
Is it worth trying to rejuvenate a monitor that takes about 60 seconds to warm up. I see vertical white lines (on a vertical mount monitor) for the first minute or so and my blacks are kind of grey, but as the monitor warms up the blacks darken and as that happens the lines go away. Picture is beautiful after that.
My instinct is to leave it, but I've read elsewhere the monitor should not take that long to warm up.
Sixty seconds isn't terrible at all. It also may not be a tube issue. What monitor is is? What's the B+ voltage? When was it last capped?
The vertical lines are from the screen voltage being up a tad too high - but if they go away after a minute I wouldn't worry about it. If it bothers you, just turn it down a nudge.
The vertical lines are from the screen voltage being up a tad too high - but if they go away after a minute I wouldn't worry about it. If it bothers you, just turn it down a nudge.
That tube looks like it could use some help from a rejuvenator. Remove the shorts and clean/balance the guns and it should look great.