Question about Toshiba 36A50 36" TV

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Toshiba TV (about 7 years old)

Has sound. No picture. Gradually started losing the screen...it got smaller from the top and bottom until it eventually was a thin horizontal line in the middle of the screen. Then no picture at all, only sound.

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  • 139 Answers

You had parts in the vertical deflection circuit failing, most common are the vertical output IC and possibly several capacitors also in the same circuit.

Posted on Sep 12, 2009

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Lcd tv loses picture, power lght flashes grn; picture return


It sounds lamp is weak in TV and requires replacement.
I would be in better position to help you out if you post model and brand of your TV.

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Our toshiba is20 some years old. the picture is beautiful but it will flicker and lose the picture down to just a line across the screen. its like the horizontal or vertical is going on it. somtimes it...


Since its about 20 years old, it's probably suffering from broken solder joints. Resolder the vertical IC circuit. If that doesn't do it, replace the IC and whatever caps are bad. I just hope you can find the IC or even a sub for it.

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Only thin white line across my toshiba tv


This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

Sep 28, 2009 | Toshiba 36A50 36" TV

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Toshiba Tube TV 32AF45 Picture Squeeze in middle


Try unplugging TV while it is on and let sit for 20 minutes. Re-connect and see...
It sounds like your horzontal control is bad. It requires a new circuit board.
Mastersage!

Feb 18, 2009 | Toshiba 43H70 43" Rear Projection...

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Tv screen get smaller


not the flyback
it is either the vertical ic
or related caps
it is repairable probally between $75 and $100

what size screen and how old (is it worth it? that your call

Dec 20, 2008 | Toshiba 27A50 TV

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it is not worth fixing get a new tv

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Since it is 9 years model definetely loose contact and flux corrosion is there in wire connector and pcb also. Make one general service. Prolem solved.

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Picture Shortens, Converges, eventually the set shuts off - $50 for Correct Solution


Open the TV amd turn it on in a position you can see the picture, possibly through a mirror. Now gently tap all of the metal heat sinks on the circuit board until you find the one that is sensitive it will have a small chip mounted vertically on it, with probably like 7-10 pins. The number on the chip will most likely be an "LA****" number. Now turn the circuit board (UNPLUG FIRST) over and resolder the pins. This is your problem 99% of the time. Be very careful there is High Voltage inside this TV.

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