Bush lcd tv has sound but no picture when switch on tv screen is blue then goes black and you can hear the proggramme that is on

Likely you have a heat related issue in the tuner. The picture cutting out is related to the tuner board over heating and signalling the power board to switch it off. The solution is to get better heat control on your TV. Try using a fan to see of this improves anything, and get a better ventilation to your tuner.

Could be a bad connector on the set or a bad cable.
It could also be a bad circuit board. If the connections are good, take it to a repair shop.

its shot

I would love to help you.
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Did you experience any storms recently? IE. the power cut off unexpectedly?
Bruce

Make sure in the back of the TV the "picture cords" or A/V cables are properly fitted.... Hope this helps :)

you have the problem in the heater section of your crt there is an open resistor.

LCD's use a colorful crystal see through display which only visible when light is shining through it. if you have sound and no picture it's always a faulty PSU. Very easy to change out actually.

it has problem in picture tube

this is the problem related to display of ur TV screen...please contact the service centre...plz dont try to repair it urself..

if yo know how to solder , re solder your tv, second adjust the IF transformer by using the plastic or wood stick. IF transformer is looks like a cube made of metal with an adjustment screw at the top. try to adjust it and observe what happen.