My tv have picture 5 inch in the horizontal in the center....
My tv have picture 5 inch horizontal in the center , and a I have the schematic for this tv, also I have a oscilloscope 25MHz 400V max Is this can help me to fix this tv, cold you help me, Thank you!!!
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Re: My tv have picture 5 inch in the horizontal in the...
Check the electrolitic capacitors in the vertical section for leakage or dry condition. The vertical amplifier IC may also be defective and check for the solder joints around the high power resistors as well.
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Do not align the guns! they are located facing up toward the mirror; they are picture tubes! covered with big glass lenses! heavy!
instead look for a red/green/blue adjustment knob on the set's front; the buttons should say: convergence or, crosshatch push the crosshatch button: once you have three vertical lines crossing three horizontal lines; just merge them using the other R/G/B knobs untill you have one white vertical line and, one horizontal line crossing in the center of the screen.
(you may have to find the controls on the remote using "setup")
Circuit diagrams are available online from 5-20 dollars. I doubt it will do you much good, as you will need to be an expert at tv repair in order to read the diagram, and trace the problem. It sounds to me like a bad capacitor near the horizontal deflection circuits, or a resistor near the pincushion adjustment could have blown. If you really want to learn how to fix your tv, you should visit some learning websites that explain the different areas of a tv circuit board and their functions.
Failure in the vertical deflection amplifier section. This is usualy from failed components, and sometimes cold solder connections. Most of the time, I found bad capacitors, and sometimes the output IC or transistors (depending on the model type) that have failed.
Take the set to a service center for an estimate. You may find it more feasible to buy a new set depending on the parts that failed and the time involved to do the work.
Your whole problem my freind is dryed up capacitors. You should go, if you have the technical ability to replace these capacitors, to http://servicemanuals.net, download the schematic diagram, and start replacing the waveshaper capacitors in the vertical drive circuit.
Hey Rolly no problem man as if we can help ya your not taking up our time as we answer when we can. Ok theres is still a small cap somewhere by the drive ic or they call it the jungle ic. If you have a schematic scan the vert part and I will assist you the best i know how.