At 04:21 PM 2/27/05, you wrote:
>Been there - Done that - Still putting the $&#**^% plug-in back together!
>BTW - the Cushman manual is SOOoooo wrong.
>
>The CRT is actually a 3RP1A (flat screen) and you "could" pay
>$160 for a "NOS" one on ePay
>or you could go to:
> http://www.vacuumtubes.net/
>and get a brandie new (Chinese) one:
> 3RP1A - $30.00
>plus shipping:
> 1-5 tubes $5.00
>
>Great on the fone, great and speeeedy service.
>Bill - WB1GOT
One trick, since there are replacements available,
and you've decided that the old one is pretty shot....
30 years ago I used to "rejuvenate" B&W
television CRTs by upping the heater voltage
by running 8-9v on 6.3v heaters for a couple
of hours.
If you have a variac and a filament transformer
around of the correct voltage, why not try it?
If it's a 6v filament use a 12v or 24v transformer
and start the variac at zero and work up.
If you can milk the tube out of a few more
years of life, you've saved some money, if
not, well, you haven't lost anything but
some bench time, and that might even be
fun.
Mike
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