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Toshiba TV Model CX36H60 Turns on by Itself

I have a 36" Toshiba, Model CX36H60 (TAC9813) that will turn on by
itself, intermittently. It has done this 3 times in the last 6 or 7
days. When this happens, the remote control will not control any
function of the TV. Pushing the power button on the TV will turn it
off. Then the TV will once again function normally and remote control
will work the TV as it should. The last time it came on by itself, I
pushed the channel button on the TV and the TV turned off and then
back on by itself within a couple of seconds.
I am thinking that it could possibly be a cap in the power supply, or
a loose connection. Has any one ever run into a Toshiba exhibiting
this type of behavior that can steer me in the right direction?
 
D

D-unit

Jan 1, 1970
0
I have a 36" Toshiba, Model CX36H60 (TAC9813) that will turn on by
itself, intermittently. It has done this 3 times in the last 6 or 7
days. When this happens, the remote control will not control any
function of the TV. Pushing the power button on the TV will turn it
off. Then the TV will once again function normally and remote control
will work the TV as it should. The last time it came on by itself, I
pushed the channel button on the TV and the TV turned off and then
back on by itself within a couple of seconds.
I am thinking that it could possibly be a cap in the power supply, or
a loose connection. Has any one ever run into a Toshiba exhibiting
this type of behavior that can steer me in the right direction?

I just had a magnavox 20" do that. You could hit the side of the
set and make it come on. Hit it again and it would go off.

Pushing the "ON" button did nothing.

It turned out to be a cold soilder joint in the power supply.

db
 
K

Ken G.

Jan 1, 1970
0
Did someone spray cleaner on the screen and let it run down ? it can
drip on the circuit board right on the buttons inside .
 
C

clifto

Jan 1, 1970
0
I have a 36" Toshiba, Model CX36H60 (TAC9813) that will turn on by
itself, intermittently. It has done this 3 times in the last 6 or 7
days. When this happens, the remote control will not control any
function of the TV. Pushing the power button on the TV will turn it
off. Then the TV will once again function normally and remote control
will work the TV as it should. The last time it came on by itself, I
pushed the channel button on the TV and the TV turned off and then
back on by itself within a couple of seconds.

1. Make sure the mechanical power button is all the way out, i.e. not
halfway pushed in.
2. Cover the remote sensor window with black tape for a while and see if
it still comes on when not requested.
 
A

AJ

Jan 1, 1970
0
Pull chassis all the way out of the tele, disconecting the plugs and hv lead
appropiately.
Check across the front of the chassis, the area that is normally under the
front of the crt. Check for any contamination or fuzz that may be on the
board as a result of material dripping down off the front of the crt due to
improper cleaning or spillage. Check all of the tac switches for proper
action or just change them, check for zener diodes connected along the buss
lines from the switches to the mpu, any of them going leaky may draw the
line down causing erratic functions. Also, as posted, erratic PS voltages
doe to component changes will also confuse these sets.
 
Thanks to all for giving advice on what to look for. I will try to
check it out this weekend and will post my findings.
JR
 
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