Question about Toshiba 32A33 32" TV

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All works on tv but picture is very dark no matter what you do

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If the brightness control has no effect, then picture tube is going out if it has a glass tube crt display. used to be a rejuvinator would cook off some of the deposit internally on the crt, but it also reduces the life of the set.

Posted on Sep 21, 2009

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Dark Picture

Symptom: NO PICTURE
Cause: DEFECTIVE 3D/YC COMB FILTER
Symptom: DARK PICTURE
Cause: DEFECTIVE 3D/YC COMB FILTER
Symptom: DARK PICTURE
Cause: DEFECTIVE C724
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Picture is dark

Does not seem like a bad tube alone. Could also be that the Video output Transistors Supply Filter capacitor having dried out. It is a 100mfd 160V capacitor, which on replacement will improve the brightness of the immage. And yes, you could also try increasing the heater voltage (Filament Voltage)of the Pictuire tube, this will definitely increase brightness, but will reduce the life of the Picture tube. You gotta think - 10 year old TV, should I repair or exchange and get a new one???
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