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TV-430 i have one of these pocket TV's. Its dead. The Clock crystal is working but no picture or sound. Some filter electrolytic Caps are heating up. i have 6v DC supplied. Please email me at " allen@btw.com.au"

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  • proff 128
    proff 128 Mar 18, 2008

    By the way its a casio TV-430 LCD, very small. pocket size nd runs off 4 x AA batteries totalling 6 volts

  • Hammad Rahman Jun 30, 2012

    me too. When i turn it on, the screen turns green, and in the background their is a faint squeeking noise.

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G´day Allen.
I have a Casio 430, with same problem.
Did you get a fix for yours?
Regards
Marcio Antidio mantidio@hotmail.com

Posted on Jun 09, 2010

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Toshiba TV


No ccfl backlight ,the supression coils take out make good clean the ends of this and replace they are on the backlight inverter re- soldering of them i have done it by ACER and by Fujitsu Siemens is your tosjhiba an older type then the chance is plausible

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I have a LG601D plasma tv the problem is while whatching tv the picture will start to flicker off & on then no picture but still has sound what could it be


Sound without picture.
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Any caps in these sections that look bulged at the top, or bulged/leaking at the bottom need to be replaced.
If you repeatedly turn it on, eventually it'll probably stay on, but every time you turn it off, the TV will get harder and harder to start up until one day it just won't.
Sometimes you have to do the opposite to start it up and unplug it for 5 mins, then try.

If you are handy with a soldering iron and can identify the power supply and inverter / FM section for the backlights, an inexpensive handful of capacitors will likely fix you right up.
Match the capacitance on the capacitors. Go over voltage if you can, and still have them fit.
IE - it's not a bad idea to replace a 10V cap with a 16V or 25V or even a 50V, but don't replace a 680uF cap with a 500uF or a 1000uF (unless you are positive it's only doing ripple filtering, and even then, you should go OVER, not under the uF rating).

Most of the caps that go are 10V 1000uF or 3300uF.

I found some great videos of the procedure (for many Samsungs with the same issue) on youtube.
Copy each of the following links into your browser address bar and watch all the videos.
You will have a pretty good understanding of what to do afterward.

http://www.youtube.com/watch?v=Mm51C_RDIZE
http://www.youtube.com/watch?v=BNHHrgX_6cs&feature=related
http://www.youtube.com/watch?v=8l0AUj8QUkg&NR=1&feature=fvwp
http://www.youtube.com/watch?v=Y7b_nTaZYcU&feature=related

As you can see, this issue spans plasma TVs, as well as large and small LCD TVs and monitors.
The parts are cheap, and skill required is minimal.

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This sounds like a power supply problem in the TV. The chirping sound is probably a relay turning on and off as the overload circuit is triggered, trips, then resets, etc. Electrolytic capacitors in the power supply usually have a cylindrically shaped metal case with 2 or 3 legs, and their chemicals dry out in a few years, and they fail. Sometimes they bulge out or crack and leak chemicals, and sometimes they blow up. I've seen 15 year old IBM monitors go from fuzzy green to factory fresh, just replacing 5 or 6 electrolytics in the power supply. You can get them at Radio Shack or electronic parts stores, along with a soldering iron, wick, and solder. There are videos on YouTube that show how to solder, and remove solder.
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What you need to check for is whether the TV has a built-in Tuner. This will either be SD (standard definition) TV Tuner or an HD TV Tuner. The box it came in will tell you or you may still have stickers on your TV.

If it has a built-in SD tuner you will be able to pick up HD channels but in a lower quality. In this case you will only need to plug the TV into a Wall-socket antenna or rabbit-ear antenna.

If it has a built-in HD Tuner you will be able to pick up HD Channels in full HD quaility picture. Simply by plugging the TV into a Wall-socket antenna or rabbit-ear antenna.

If your TV does NOT have a built-in TV-Tuner then this TV is clasified as "HD Ready". Which means that you have to purchase a Set Top Box (STB). you can get either HD or SD set top boxes. In this instance you will plug the cable from the wall socket into the STB then from the STB into the TV using either an HDMI cable (as long as your TV has an HDMI input) or through RCA cables which will be coloured Green, Blue and Red (i think red)

By the Way - best picture quality is from a wall-socket antenna.
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