My tv has picture, but no sound (lots of hash sound)
My tv was on and playing just fine a couple of days ago when the sound went out suddenly and was replaced by loud static sounds.
The picture seems to be fine but there is nothing but static for the sound.
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There is nothing you can do to this set now. The only thing you can do, is to make a hard reset to this set. Just unplug it from AC mains socket, and replug it after a while. If this do not help you, just contact any experienced service technician.
Are you using the AV input for the XBox or other cable? If you use AV, then use the same input that the Xbox does not show picture, plug in a DVD and see if it works. If it does not have a picture, so 100% your TV has problem.
this is a common problem,the vertical hold has been damaged.dont leave the teli. on,the white line will burn the middle of the screen and leave a black mark. You need a new integrated circuit(i.c.) for vertical hold.
Sounds like a failed vertical amplifier circuit. This is normally primarily contained in an integrated circuit mounted on a heatsink.
There are other possibilities along the line but the one above is the most likely.
Now all you need is a TV repair shop that is still in buisness.
from what your describing it sounds like a resolution or ratio setting on your t.v. you can change these setting on your cable box and t.v as well this seems to be the setting on your t.v. since you have already unhooked the cable box. if changing the settings doesnt resolve your issue you may have some failed components on the pc board that could be repaired by a repairman v/s purchasing a new one. hope this was helpful....
Your power supply is going south, I have an old sony with the same problem. The voltage level drops and does not have enough 'kick' to start. It will work better when it is warm. The module will need to be replaced.
as per your statement
there is a loose contact in power supply section of your tv.
it is 1oo% sure that allthe parts are ok as
tv runs ok when it comes on.
but you will have to call tech. as without knowing technology it is dangerous to open tv due to high voltage.