Toshiba 32" tv wont give sharp picture (other tv does)
Have toshiba 32" tv. When turn on, screen fuzzy (not sharp) looks likea tv that needs an antenna on it, to make the picture sharp. We have cable and our other tv works fine. Also has fuzzy horizontal lines moving up the tv. What causes that and can it be fixed?
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Hello: Your problem seems to be in or around the tuner of the television, More then likely you have cold solder joints on the turner that needs to be resoldered. Also check the coax end protruding from the back of the set where u connect the cable and make sure it is not loose, a bad ground on this connector to the turner shield will cause this symptom. My professional diagnostic is that when the television is cold the solder connections are making contact with the board, and as heat builds up in the television while watching these connections tend to seperate and make limited contact, causing fuzzy picture and in most cases no picture just snow...
no rocket science here - my son fiddled with the cable cord attachment, until presto, the screen became sharp. Then we moved away as fast as possible, lest we shifted it and it put us back at square one.!!
If you know where the fly back is, ok open the casing and see at the
back of the fly back, there are two knobs, one for the focus and the other is
for the brightness. Try twist both and see which one is for the focus. Ok,
from the focus knob try adjustinguntil the fuzzy sight disappears. Try
this, I usually do it to screens with blurryappearances.
I think you'd have to look at how much a comparable set would cost. I know that flat screen sets are coming down in price.
One thing you could try is to adjust the focus control although if it just went all of a sudden, then this may not help. There are two controls on the flyback transformer. Follow the thick red wire from the top of the picture tube down to the transformer that it's connected to on the circuit board. There will be two controls, the upper one being focus (marked with an "f" or the word focus). Try adjusting this while watching the picture. A mirror may be helpful. At the same time, be very careful what you touch in there, any metal part could have high voltage on it. As long as you are just touching plastic parts you should be ok. A good rule of thumb is to keep one hand behind your back as you work so as you don't inadvertantly ground yourself to the chassis while touching something with a high voltage on it.
If this scares you a little perhaps it's worth taking the set to a shop for an estimate.
This RCA set uses the CTC187BD chassis. Look on the back of the set and to the right of the cable connector you will see 2 controls sticking out, one on top of the other. The top control is for focus and the bottom one is screen, or overall brightness. If these controls have been turned clockwise then you will have a bright, fuzzy picture with white lines (retrace lines) through it. Tune in a channel with white letters on the screen and turn the top (focus) control until the letters are crisp and sharp. Go into the menu and turn the contrast and brightness all the way down, and then turn the bottom control (screen) until you can just see the picture, just above the point where the picture is too dark to see. Go back into the menu and reset the contrast and brightness and the picture will be back to perfect.