My screen started showing horiz. lines across top and botom of screen for a few seconds while making bbzzzz sound off and onn for about 2 days, then I went to turn on and nothing except a beeping sound from within the TV itself. Cahsis is a CTC1697CA. Built in /sept 1997
Clearly shows problem in deflection area both horizontal and vertical section. Horizontal lines is due to vertical section problem and making bbzzzz is due to horizontal output transistor short and sometimes LOT SHORT.
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You will need convergence work to this unit. Not cheap.(Not recommended for DIY unless already experienced in this type work). Might contact a local servicer experienced with Toshiba & see if they can give you a quote over the phone. Be sure you are sitting.
This is probably a good time to consider entering the 21st century & look at LCD or LED flat screens.
Hello! your set might have 2 issues: the one is fixable, the other is not. I'd start to inspect t-con board's ribbon cables, which connect the board to display itself. In many cases, due to overheating or moisture accumulating, those connections might get unstable, what result in those intermittent lines. T-con board itself might cause this. If you won't get lucky by just reconnecting t-con's ribbon cables. Replace t-con board. It's cheapest among all signal processing. If that's not an issue, the display itself at fault. Then, you know what to do: dispose TV properly or sell it for parts in whole at Craigslist. Good luck, Thanks, Alex.
sounds like a vertical problem, usually you'll see one white line across the screen, but one I worked on would come on and the bottom half of the picture was gone and there were lines across the top of the screen.
If you know how to solder & can find the vertical output chip then you could try resoldering the pins. If this doesn't fix it then it needs new parts.
Horizontal line (up and down) is know as horizontal collapse. This is usually located around highvoltage section of the circuit. Because this circuit depends on certian frequencies and voltage protection circuitry will shut the set down. This will need a trained tv technician to fix this and can be expensive depending on the parts needed.
Your Zen got bashed. or at least the screen suffered some violent movement and shifted on its moorings. To make it simple... all around the perimeter of the LCD screen, there are electrical contacts for HORIZ and VERT signals which come thru tiny ribbon cable (looks like copper colored ribbon but actually is flat mylar with wire laminations inside) anyway, these are either socketed, soldered or have pressure contacts which make the connection and give you colors in the right places. The connector for an entire HORIZ row came loose, got bent or broke. The only fix is to locate it and either resolder it (difficult without a 'needlepoint soldering iron), reshape that single contact so the right part of the display (HORIZ connection cable) touches its pad again, or replace the display,, socket, or its cabling. I have one with bad HDD but everything else is OK (Display too) which I can sell you cheap. All you'd have to do is pull your HDD, install it in my old Zen, and go.
PM me if you are interested: [email protected].
This is for the original problem.. Not the second post.
It's a problem in the horizontal deflection circuit. The parts will be available, but you will be in for some daignostic repairs also to find out why it failing or if it has failed on it's own.
There should be a few caps near the IC (an LA7840) that could also be causing the problem. Click the link, it will make it easier to locate the part inside.
This is the kind of repair best left to a TV tech, but get it done now and it won't cost anywhere near as much as it will later.
if the set has a previous vertical line problem and a white horizental line only comes in the cross of the screen and you turned the tv on for a time while the problem is solved that mean you have make a burnt line to the screen ,
but if you are the tv owner and nothing of that happens so you have a problem in faulty dried capaciter in the vertical live part search for 33uf 160 v or 22u 160 v and alter
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