|
Might want to confirm the sencor is good on a more common tube first... if for example your heater supply or its control is not.working right you could end up putting 12v into a 6v heater and damaging a rare CRT.
If the 465 is known good and assuming use of a universal adapter and similarly to my 466 testing is straight forward. Check pinout of the tube in datasheet and socket wiring if it is installed in a set to be confident in set up before powering up the tester. Start at 6.3v for the heater use the same settings you would for a 10bp4 and give it plenty of time to reach proper emission levels. If the CRT is asleep it may take in the neighborhood of an hour to wake up at 6.3v....best not.up the heater voltage till you've given it plenty of time to wake up...if it has taken over an hour and it has not climbed into the good range you can up the heater voltage to as much as 1.4x the normal value and let it sit some more. If after hours of gentle wake up it is still not good try the mildest rejuve the cr70 can do, and work your way up some if needed. If the cutoff test acts wierd your tube may be too gassy to use.
|