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Picture appears to have scrolled down the screen. Has a line about 5 inches from top and the picture above line looks like the picture rolled over. no adjustments for screen position or any other adjustments. pillips model 27pt9015d/37
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sounds like the vertical adjustment has spanned beyond the screen, causing it to jump up and then upside down. after the cover is removed look for vertical adjustment and with a non-conductive screwdriver, adjust it a little bit either way to see if it fixes it, if it doesn't fix it, then look again for the right one.
Check and replace all the electrolytic capacitors at its vertical output section. The lines you refer here are technically called, vertical retrace lines, and are mainly due to capacitors itself. Check all the solder terminals of vertical output IC for any loose solder terminals. Resolder all the suspected solder terminals by applying a little more solder to each point. When replacing capacitors stated above, replace them all at one time. There will be 5 of 6 numbers of them, the most, and wont cost more. If you wish to get more details, surf the following
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You have a swollen capacitors in the vertical section try to replace all the leaky capacitors, you will notice that there is a liquid leaking out in the buttom of the capacitor.It is like an oil spill.
You have bad capacitors in the vertical deflection. And you will have to resolder the vertical IC as well. Replace the caps in the area of the vertical IC. Find a TV tech or hobbiest to do this!
replace the vertical ic, LA 7833 and four capacitors near it, i encountered this last two days.change the parts and it ok now.
cost of this parts is about $20.00
this symptom is what we called vertical fold-over. vertical fold-over is characterised by a white horizontal bar on the bottom or top of the raster due to the concentration or compression of the trace lines. it an image is present, the bottom or top portion is fold over. this is caused by a vertical deflection current with poor linearity, which compresses the trace lines at the bottom or top of the screen. this symptom is is caused by a defective sawtooth wave genetator circuit, or improper biasing or defective feedback circuit of the vertical drive or vertical output transistor/ic. the negative feedback circuit in vertical deflection circuit compensates for the linearity of the trace portion of the sawtooth wave. a decrease in the capacitance of the sawtooth generator capacitor is usually the trouble. but if you do not understand anything what i have written here, better bring it to a qualified tv technician for your own safety also. good luck!
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.
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