Question about Toshiba CF32H40 32" TV

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I have a Toshiba CF32H40 TV that is displaying a Single Horizontal Line. Any help would be great

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You lost vertical deflection. this will require parts replacement, however it is possible it is only bad connections (cold solder joints)

Posted on Dec 28, 2009

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Posted on Jan 02, 2017

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FIXS LNES IN TOSHBIA SRS WOW THEATER WIDE TV !


sounds like vertical retrace lines. The horizontal line fault called so. Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences to the author of that site.

Apr 23, 2016 | Toshiba 32A33 32" TV

1 Answer

What can be done to repair picture to my TV


Vertical scan output section circuit should be checked. Contact any service technician.

Aug 30, 2014 | Toshiba CF32H40 32" TV

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Toshiba CF32H40 32"TV shrinking picture with solid black on bottom. What causes this and can it be fixed?


Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Aug 30, 2014 | Toshiba CF32H40 32" TV

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Toshiba cf32h40 started last week the pic would go down to one thin line i would hit it on the side and it would come back ,but now thin line comes back when i hit and then goes away so i took off the back...


that silver box is called TV tuner (see picture ) ............ but in your case that is not the problem ......... after 4 or 5 yrs (depending on usuage ) in some TVs on mainboard & CRT tube's circuit board at some soldering joints cracks develops ... then due to loose contact TV behaves as you have described ........ when you are hitting that lightly on its side then these cracks at soldering joints are getting connected temporarly & for few seconds or minutes you are getting normal picture ....... so solution is most of the soldering joints on mainboard & on CRT circuit board has to be resoldered ....... only good tv service engineer can do this without shorting joints or damaging components..... so that silver box ( TV tuner ) is not the problem because when it gets deffective then you will get picture that comes when tv is switched on ---- usually it will be blue screen ......& also if you connect dvd you will get picture normally ...only thing is that you won't get picture from cable or antenna .............. vishnuswamy_25.jpg

Sep 01, 2011 | Toshiba CF32H40 32" TV

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Toshiba TV picture has become single horizontal line in middle


this problem is caused by a faulty ir of cap's . First is c408 on the board it is a 100uf @ 35v i replaced with same uf and @ 50v , Second is a 2.2uf @250v and is c410 on the board replace both and your off to the races.

BEWARE OF HIGH VOLTAGE EVEN IF UNPLUGGED


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Jul 22, 2010 | Toshiba 27AF43 27" TV

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Screen is black wiht a single 1/8 thick horizontal line across entire screen. Sound is ok. Other TVs are working.


cold solder in vertical ic and check caps around to..if you see resin around any cap, change.

Apr 22, 2010 | Toshiba CF32H40 32" TV

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My CRT TV displays a single horizontal white line across the screen. It will flicker and try to display the picture. If you smack it you'll get a quick picture then back to a line. After about 10-15...


The single line means that the vertical deflection doesn't work. And since it is working when you kick the tv or has warmed it's clearly a bad connection - open the case and reseat the wires going to the tube coil.

Dec 21, 2009 | Toshiba 32A33 32" TV

1 Answer

No picture no sound


Did you mean the picture is collapsed only in the middle horizontally(white line appears on the middle part of the screen)?
If that is the case, maybe vertical IC failed or loose connection.

Apr 05, 2009 | Toshiba CF32H40 32" TV

1 Answer

Single horizontal line


this problem is field collapse usually causd either by the field oscillator or field output stage to advise you further i would need to look at the circuit diagram

Feb 09, 2009 | Philips Magnavox 27MS343S 27" TV

1 Answer

36 Inch Toshiba - Single Bright Horizontal Line


You're losing your horizontal voltage that drives the fly back transformer. Poking around inside can be hazardous to your health since you have to worry about high voltages present on the picture tube even when the TV is off. You may still be able to get parts for those old TV's but they may hard to find. You can try here, but if you have no background in TV repair, it will be pointless.
TV Parts Universal TV Stands DLP Chips ShopJimmy

Mar 20, 2017 | Toshiba CZ36T31 36" TV

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