Question about Toshiba 32AF43 32" TV
When I turn the TV on, it immediately shuts off. I used to be able to fix the problem by unplugging the unit for a while, then plugging it back in. That doesn't even work now. Is it the switch or wiring? Someone suggested it may be some sort of tube issue?
Not a tube issue...........It is going into shutdown mode...
1) Pull chassis...solder any /all bad connects in horiz,vert,power
circuits....look for evidence of over-heating....
2)Check for weak electrolytic capacitor in horiz driver circuit..use ESR meter..................................................T.
Posted on Dec 25, 2007
Fix this exact TV today with the same symptoms of shutting off immediately when it comes on for a split second. Removing the cover showed a filter capacitor that showed it had excessive heat on it for some time as the plastic wrapper is recessed from the top. Unfortunalte I forgot to write down the
capacitor designator but it is hard to miss as it is relatively big about 2 inches tall and has a diameter
of around 1 inch. The value of the capacitor is 330uF, 160V. It is near the control IC801.
It is also a good idea to replace C863 (4.7uF, 50V) a startup capacitor as someone else already
suggested since you are already have the unit open.
I replaced the 330uF, 160V cap with one that is 470uF, 200V of the same size. This TV was manufactured in 1994 so it is understandable this cap has reduced in value and has its ESR
parameter increased due to the high ripple current. Replacement of this cap should give you yet
another 10 years of service unless something is broken with it.
Posted on Oct 18, 2008
Check the capacitor C863 (4.7MF-50V) that is located in the start up circuit and it is connected to pin 2 of IC Q801.
Posted on Sep 22, 2008
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