Maker Pro
Maker Pro

discharging HV from a CRT

D

Diverdan

Jan 1, 1970
0
Hi Tech guys, I am just a cabinet maker and want to remodel a old
floor console TV cabinet for a new table model 27". My concern is the
HV in the CRT, whether or not the bleeder resistor will drain the
voltage from the cap or not, so when I remove the old workings from
the cabinet.
I know very little about this type of electronics. Also if I remember
from 30+ years ago when I was in radar school for the military, that
the only real sensitive part of the CRT is the yoke. I don't want to
pull out the CRT and have it implode.

Can anyone help.

Diverdan
 
R

Robert Baer

Jan 1, 1970
0
Diverdan said:
Hi Tech guys, I am just a cabinet maker and want to remodel a old
floor console TV cabinet for a new table model 27". My concern is the
HV in the CRT, whether or not the bleeder resistor will drain the
voltage from the cap or not, so when I remove the old workings from
the cabinet.
I know very little about this type of electronics. Also if I remember
from 30+ years ago when I was in radar school for the military, that
the only real sensitive part of the CRT is the yoke. I don't want to
pull out the CRT and have it implode.

Can anyone help.

Diverdan

1) For transport handling, connect a wire first to the chassis, and then
with a well insulated tool, connect the other end of that wire to the
CRT at the high voltage cap.
2) There is no bleeder resistor; high voltage can exist at the CRT for
years, and even after the discharge previously mentioned.
3) Stress on the neck can cause similar damage.
 
Top