|
|
|
#1
04-08-2014, 01:55 PM
|
||||
|
||||
|
Discharging TV
Will be starting to recap a couple of TVs. What is the best method to make certain the TV is discharged? I was thinking of taking the high voltage lead then touching it to the HV cage along with placing high watt resistor across the can capacitor leads. What do you guys think is best?
|
|
#2
04-08-2014, 02:03 PM
|
||||
|
||||
|
Caps most likely will be discharged after a day of being off...
Picture tube jumper lead from a screw driver to HV cage, push the screw driver under the hv attachment on the tube....
__________________
Yes you can call me "Squirrel boy"
|
|
#4
04-08-2014, 05:19 PM
|
||||
|
||||
|
I recommend clipping the CRT anode button to ground, after discharging with a jumpered screwdriver and removing the HV wire from the tube. Or inserting a high value resistor in series with the jumpered screwdriver. Otherwise the CRT anode can 'recover' it's charge and bite you again in a few moments after it has been discharged.
I learned this the hard way on a Silvertone with a 21GUP22 CRT several years ago.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4
|
|
#5
04-08-2014, 06:03 PM
|
||||
|
||||
|
Yes, the CRT is actually a very high grade low-leakage glass dielectric capacitor. Think really big Leyden Jar.
In a dry environment, they tend to "self charge" due to dielectric absorption.
|
| Audiokarma |
|
#7
04-10-2014, 09:30 AM
|
||||
|
||||
|
So, no voltage at the CRT pins but there is at the evac stem? Last tube I aired, after doing so I reached out to grab a piece of dangling glass and a spark jumped to my finger. Not a shock per se, but I could feel it and yanked my hand back mighty quick.
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
