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“Be patient toward all that is unsolved in your heart, and try to love the questions themselves, like locked rooms, and like books that are now written in a very foreign tongue. Do not now seek the answers, which cannot be given you because you would not be able to live them. And the point is, to live everything. Live the questions now. Perhaps you will then gradually, without noticing it, live along some distant day into the answer.”Rainer Maria Rilke
To be honest, it's probably better to bin it and get a new LCD / LED jobbie. Getting parts won't be fun, and fixing it will often stress other parts into going soon after. If you mum is anything like mine was, she won't want to be without the TV for a week or two while it is fixed anyway. If you get a new one it'll probably cost about the same or slightly more than the repair, and a new one will work with digital TV which (I'm sure) is going to reach SA soon if it hasn't already. I've yet to see a CRT TV with a DTV tuner in it, and the external boxes are a PITA, particularly for the elderly.
The universe is composed of electrons, neutrons, protons and......morons. (ThePhantomUpvoter)
We're very big on digital here, but all with set top boxes. There are two free-to-air terrestrial, analogue broadcasters, and these are often described in terms of derision, e.g. welfare TV. I would say most viewers are subscribers to DSTV - digital sattelite - and dishes can be seen on the even the humblest rural shacks. The external boxes are as ubiquitous household items as microwave ovens. Then there is a second, subscription based, digital sattelite broadcaster that also requires an external box, but nobody I know subscribes. Their recent introduction of three http://www.timeslive.co.za/entertainment/2013/04/24/toptv-porn-gets-green-light may pick things up for them a bit though.
The two free-to-air terrestrial broadcasters are required by law to switch to digital broadcasting by 2013, but nobody is ready yet, so we may only see an analogue switch-off in June 2015, as required internationally. I think it is only these channels the new digital-ready TV sets will be able to receive. The two pay broadcasters use their own, proprietary set-top-boxes, so these will be all around for a very long time. So, the attraction of a new TV definitely doesn't include its ability to work with digital TV.
But when I'm liquid again I may just get her a new one anyway.
Find yourself a small screwdriver. On the back should be several potentiometers ("pots") that will adjust aspect ratio, linearity, horiz, vert, color etc. Don't touch the color adjustments, but if you adjust the linearity and others while watching it, you should hopefully see the picture improve. If it is a truly old crt with tubes/valves, it is more likely that a tube/valve is going south and should be replaced. If not (and the adjustment doesn't work), it is time for a new telly.
Hehe, only an extremely rare vacuum tube hobbiest would have one of the old sets you mention last. TV was only allowed into SA in 1975, and all TV's range from only transistor to VLSI. I know the pots on the back, but I've never found one connected to interlacing. And, oh yes, I have learned well enough to stay away from the colour ones.
I know the pots on the back, but I've never found one connected to interlacing.
There would be no "interlacing" control available to the user on CRT TVs, if you're lucky you'll see 'vertical size' and a 'vertical position' on the back of the TV - try with those two first, if it doesn't fix the image on screen then you could be having a vertical linearity problem and that needs to be fix on the board of the TV.
Old sets with discrete components will have trimpots for those adjustments but newer designs will have an IC doing all the vertical deflection footwork taking a feedback signal to correct itself, usually a resistor will handle that; some fancier designs have an active component attached to the deflection yoke for that purpose (thermistor, a diode, etc).
How about an electronics shop for a modern TV? CRTs are power hungry, unwieldy, have a poor image, and make that horrible whining sound.
It sounds like some piece of the timing circuit for the sync has gone. If that's on a chip, you're screwed. Otherwise it's probably a resistor or capacitor on the circuit board that has blown, but finding which one will be very hard.
CRTs are quite dangerous; they have a HT circuit inside and that can maintain a pretty high charge even when you've turned it off. Be very careful if you're going to try any self servicing.
True, one ends up spending a premium price for the Dell. I like to think I'm paying for reliability, but as you've mentioned, I'm sure you can get that today without paying a premium. A couple of things I've liked about my Dell laptops are the 1920 x 1200 panels and the 7200 rpm drives.
Wow. The last place I worked had about 115 machines, all Dell. I had to replace the motherboards in 40 of them because of the "capacitor plague", some, more than once. The count would be even higher had I not left. I'm sure the guy who followed me ended up replacing even more of them.
The bad caps weren't really Dells fault. The big problem I had with them was how they handled the situation. They denied the problem even existed for months.
The Dell Inspiron series is very infamous for overheating, crashing, and having components go boom on you. (Too lazy to get a link right now. Currently [still] waiting for Visual Studio 2012 Update 2 to install, after about 10 hours of it running. )