Question about Toshiba TN61X81 61" Rear Projection Television

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I am repairing my sister TV {Toshiba TN61X81}. The original was no picture and with sound. Upon troubleshooting the vertical deflection, ihad move the screen control for all 3 crts to see the horinzontal lines. I replaced the vertical output IC{LA7833} now I have picture and sound. The picture is dark and not as sharp as before.. Is there any way I could set the screen control to the original settings.. Please help...Thanks...

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  • eddiemanila Sep 14, 2009

    Thanks tvtechlady...

    this sound brilliant...The tv also have convergence problem.. I ordered the repair kit.. Will do after I fixed the convergence..

    thanks,, will update..

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The easiest way I have found to set the screen controls is to tune into an old black and white show, turn the green up until you see retrace then slowly turn it down until it just dissapears then adjust the blue and red for a true black and white picture.

Posted on Sep 11, 2009

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Horizontal line running through the middle tv screen, no picture but has sound. TV is a Toshiba.


You haven't vertical deflection.
The ff caused the problem.
1. Dry joints on the vetical section.
2. Blew Vertical ouput IC
3. Open yoke vetical winding.
4. No vertical output from jungle IC.
5. Open supply for vetical ic due to open fusible resistor.

I've suspect that you have #1 and #2 fault. This is not Diy so I've advice you to send to repair shop or look for a qualified tech to isolate the problem.

Thanks for using fixya.

Jan 26, 2011 | Toshiba Televison & Video

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The picture with my television has gone out. The sound is fine but there's only a white line across the middle of the television. How can I fix the picture?


The Toshiba sets are well known for this problem, the tv has a vertical deflection issue caused by the vertical ic and a few small capacitors going bad, I recommend a tv technician for the repairs.

Jan 15, 2011 | Toshiba 36A40 36" TV

1 Answer

Toshiba TN61x81-- after convergence IC's replced


Please don't be offended by my suggestions if you are experienced at circuit repair.
You may have a cold solder joint or bridged joint. Check and re-check your connectors for placement. It is normal to have to adjust the convergence and focus after replacing the IC's. There should be a row of focus knobs (ususally covered by a piece of black tape) with the screen controls.
The convergence IC's won't affect the visibility of a color only the alignment.

Sep 21, 2009 | Toshiba TN61X81 61" Rear Projection...

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

1 Answer

Has sound, has power indicator steady on but no Picture


When you say they are off, do their filaments in the neck of the tube light? If not I would suspect a Horizontal and or HV problem. If they do have filament, you could have a Vertical Deflection problem. You could also turn up one of the screen controls a little to see if the screen lights up at all or if a line only appears. Do not leave it turned up because it could burn the phospher on the tube face.
The focus / screen block is on the lower right as you face the front. It is exsposed when you remove the front panel. You can try to go to Toshiba .com and see if they will give you options to down-load the manual.
That is all I got for now,
Hope this helps
Skyassoc

Jun 23, 2009 | Toshiba TN61X81 61" Rear Projection...

1 Answer

Sound but no image


I had the same problem with my sis tv. You have to open the front grill and see if the filament on the neck of the crts is lit. If it not you may want to check the horizontal ouput transistor(Q416- for open or short) and its related components around it. If it lit you may want to replace the vertical output IC,Q301 and check the related components around it.
The horizontal and vertical output is on the deflection board where the flyback transformer.. you need to open the back of tv and take the board out to check...

Apr 16, 2009 | Toshiba TN61X81 61" Rear Projection...

1 Answer

Picture loss


Sounds like vertical deflection circuit problem. Could be as simple as a bad solder joint around a heavy component such as a transformer, a bad capacitor, overheated resistor, bad IC or transistor, or combination of these. Repair would require knowledge and experience.

Apr 05, 2009 | Toshiba 36A50 36" TV

1 Answer

Toshiba TN61X81 took power hit


Sorry, but the short answer to your DIY question is "no". Good luck. . .

Mar 10, 2017 | Toshiba TN61X81 61" Rear Projection...

2 Answers

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this is a malfunction vertical deflection block of your TV-set .please contact the nearest repair shop.do not turn it on until then,please.

Apr 17, 2008 | Toshiba 36A40 36" TV

1 Answer

Wavy picture for Toshiba Model 50H12 Rear projection TV


In general, these problems are usually caused by leaky output filter capacitors in either the low voltage power supply or, depending upon the type of waviness you're attempting to describe, it could be in the vertical deflection circuits (either the vertical oscillator or vertical amplifier). I would estimate cost to repair from $200 to $350 dollars, depending on how long it takes to find the problem. It most likely though is a component issue in the circuitry.

Dec 28, 2007 | Televison & Video

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