Question about Standard (CRT) Televisions

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Toshiba CF3062A Have a model Toshiba CF3062A that has a vertical problem no vert ical from the bottom not up to middle of the screen have replaced most of the parts in the vertical circut and ideas Thanks Very similar problem; but raster fills as set warms up, although lower 50% is distorted

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  • smandry Jan 11, 2009

    It is a chassis 9150. Last night I decided to look into the problem further, after finding one of the power transistors loose on the board. After removing the board so I could resolder the leads, I saw a faint oil film under C305, C342 and CD06. A previous post from someone back in 2006 recommended replacing C305, so this was perfect correlation to what I was seeing. Resoldered transistor (sorry, can't remember which one, and I have it all back together now, but it was close to C305), replaced those 3 caps, and it works like a charm! You guys are great, thanks.

  • jpactech May 11, 2010

    whatis the chassis#? on the set is it TAC.....what is it there?

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Check capacitors location# C305-values 2.2mfd@50v,C342,2.2mfd@50v....

Posted on Jan 11, 2009

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I have a 36 inch toshiba tv model # 36A50 and i have black bar at the top and one at the bottom i only have approximently 3 or 4 inches of screen in the middle to watch. what would it be? that problem...


For one thing you have a vertical problem and since it got that way gradually you can bet that there is a bad capacitor in the vert. circuit(pump-up cap) as far as the price goes it depends on your local servicemen, i`m in canada and that sort of problem fixed at home would run around a 100.00$. good luck

Nov 02, 2009 | Toshiba 36A40 36" TV

1 Answer

I HAVE GOOD AUDIO BUT A THIN LINE IN THE MIDDLE OF THE SCREEN THAT HAS VIDEO. ALSO THE SCREEN IS BLACK ON THE TOP AND BOTTOM WITH THE THIN LINE OF VIDEO IN THE MIDDLE.


Have you vertical deflection circuit checked for bad Vertical IC, and or Bad vertical Capacitors in the vert output section for the deflection board. Also have Vertical output Pump up Capacitor replaced, also have B+ voltage check coming from flyback transformer, for any open fusible resistors

Oct 12, 2009 | JVC AV-20120 TV

1 Answer

Toshiba TV (about 7 years old)


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.

Sep 11, 2009 | Toshiba 36A50 36" TV

3 Answers

My 15 year old Toshiba Televisiononly shows a narrow horizontal band in the middle of the screen. Sound OK.


Hiii fairley,

You aren't specsificly dercribe yor tv set.
For common TV horizontal problem ;i.e : White line accross the horizontal screen, horizontal band,etc..it's can solved by replacing the IC Vertical/Transistor, and olso to replace the cap nearest the IC.

For common TV Vertical Problem :i.e : White line at the center of the screen (top to bottom),Vertical band,etc...It's can cure by Replacing the Horizontal IC/Transistor,and offcurse the cap's.

Tha's what all I know....

Hope can help you to solved the problem.

Thank's

h3liax

Jun 22, 2009 | Toshiba 32A33 32" TV

1 Answer

Thin horizontal line with a Toshiba CF3062A


This is a problem with the vertical circuit that is usually a defective vertical IC. This part costs $10-$20 and is easily replaced. Sometimes there are capacitors in the same circuit that need to be replaced as well. Dan

Jun 09, 2009 | Toshiba Standard (CRT) Televisions

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

No vertical deflection Toshiba model #CF27H40, need schematic


If this is a CRT television, replace all electrolytic capacitors in the vertical circuit - this fixes 90% of all vertical deflection problems. The capacitors most likely t0 fail are low-cap, high-volt such as 3.3 uF at 50 volts, etc. Quicker and cheaper to replace them all, rather than tracing it down to the one bad part. Total cost if you do it yourself is about $15 tops, and make sure you install them correctly - electros have a plus and minus lead, and must not be installed backwards or you'll have serious blow-upage of the new parts. Before replacing the caps, however, go over all solder joints in the vertical section, reheat them and add a touch of fresh solder. You may end up not needing to replace anything.

Dec 21, 2008 | Toshiba 36AF41 36" TV

3 Answers

Toshiba Problem


Look, replace all capacitors around horizontal transistor, if dont work, adjust eprom.

May 12, 2008 | Toshiba CF36H50 36" TV

1 Answer

JVC AV-27790 - single horizontal line


Since Intermitant always inspect the vert ckt for bad solder connections. If not replace the output IC they're cheap and most likely the problem If you still have lines on the top or bottom I would replace all of the electrolytic capacitors in the vert ckt also. Without much test equipment rebuilding the whole little ckt is the best way to go.

Apr 24, 2007 | JVC AV-27790 27" TV

1 Answer

Vertical hold


You dont have enough vertical sweep!! Best thing to check is the vert output device and I think its an IC . BUT before that check the b+ going to that device and see if its low. I will run through a silicon diode right next to the ic. Measure both sides of the diode and if theres a big voltage drop then the diodes bad. Now also these sets are common for the b+ filter cap off thge flyback transformer. Its the voltage line that feeds that diode and the vert output section. Now measure all caps out of cucuit as most will measure good if you dont. Also just for giggles right nrxt to the big IC that has the vert ,horizontal video and sound drive there is if im not mistaking the vert parts start with c4-- or the ic will be ic4-- Its a small cap that will sayc4-- attached to nothing but the ground and one pin of the ic. I've seen this cap cause all sorts of vert problems in the past as its the vert waveshaper capacitor for the vert osc/drive. Good Luck

Apr 17, 2006 | Sharp 25VT-J100 TV

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