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Vertical output ic q301 - Toshiba Televison & Video

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

MikeNJ1964
  • 398 Answers

SOURCE: tv cuts off 10 seconds after switch on and destroying vertical output ic

If the main IC is not putting out a vertical drive signal then the vertical output will not do anything and therefore will not be damaged. What exactly do you mean by the set "literally eats deflection IC's"? What is the number on the vertical output IC? I will bet that your pump-up cap or pump-up diode is defective.

Posted on Jul 05, 2007

  • 108 Answers

SOURCE: SONY KV-2965, vertival IC damaged

Not a good sony model number. How old is the set

Posted on Jan 07, 2009

  • 4234 Answers

SOURCE: how to locate vertical output ic on mainboard

This should be a small flat IC attached to a heatsink and will be marked TA8427. I think this one has about 11 pins in it.

Dan

Posted on Jan 26, 2009

  • 7 Answers

SOURCE: vertical line in center have replaced vertical output ic

If the line is vertical then the problem is no horizontal deflection. The vertical chip is probably fine.

Check connections around yoke (thats the connector with at least four wires that goes up to the coils around the neck of the tube)

Maybe that TV has two horizontal output transistors. One for deflection and one for high voltage? Check both of them. Look for bad solder joints!!!

Posted on May 22, 2009

bihug
  • 15 Answers

SOURCE: unit has sound, no vertical deflection. caps and

If there's an audio,,it might be the defective Vertical IC...but check first if there's 24v-26vdc supply coming from FBT going to Vcc of Vertical IC.

If there's no Audio,and only white horizontal line in the screen,check the Vertical out of Jungle IC.

Good luck!

Posted on May 03, 2010

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How to solve horizontal lines on a CRT TV monitor and what could be the possible courses for it


Monitor horizontal lines problems usually caused by a defective vertical output/driver ic. A missing supply voltage to the vertical output ic may caused similar faults which is one horizontal line across the display. Dry joints and missing vertical output pulse from vertical oscillator ic also could contribute the same symptom. If you discovered that the protection resistor (usually from 1 to 4.7 ohm) open circuit or burnt, then replacing it won't solve the problem. The resistor burnt or open circuit was due to a short in the vertical output ic. Thus you have to replace the vertical output ic and the burnt resistor together before you switch on the monitor.

Jun 12, 2015 | Televison & Video

1 Answer

What is the frame output ic


Hello
Frame output IC means nothing, but the VERTICAL OUTPUT IC. Every TV will have it, which will scan picture vertically at 50 or 60 Hz. [1 HZ means one frame per second. Normally TVs will have 50Hz, 60Hz and 100Hz vertical frequency]. As vertical frequency rat increases, the picture fliker wil decrease. High level high-cost TVs will have 100Hz or even more frequency will be used for vetical scanning.
In the case of computer monitors, the vertical frequency will vary from 60Hz to 120hz. You can see its picture stability, at this high frequency.
The IC [Integrated Circuit Chip], which generates the vertical frequency and outputs it called the vertical output [frame output] IC. OK

Wish you a Proseperous and Happy 2012.
Gopakumar G, Trivandrum City, Kerala State, South India.

Dec 29, 2011 | Televison & Video

1 Answer

Lost red tint


I had the same TV in my shop about last winter. The same problem, only it was missing the blue tint. If you can remove the small board from the CRT (picture tube), check the small diodes on this board. An NTE 519 will cross as a replacement. You will of course check three diodes and will find that one of these are bad. Please inspect any and all grounds on this CRT board. Resolder as necessary. And....of course you may as well pull out the main board. The deflection IC Q301 will need resoldered as well (vertical IC). Check the capacitors near and next to Q301, they will be weak and cause problems soon. May sound difficult for a first timer. Just maintenance for us old timers. Thanks for asking and show all hands of support!

Jun 13, 2011 | Toshiba 36A61 36" TV

1 Answer

My tv have one line white horizontal


The vertical output integrated circuit (Q301, mounted on a heatsink roughly in the middle of the main circuit board) isn't working. This is frequently because of bad solder connections, which is an easy repair if there are no other parts needing replacement. However, the device itself may have gone bad or there may be power supply problems. It's not unusual for other parts around the IC to go bad first and cause the IC to fail.

You can try resoldering the connections to Q301. If that doesn't bring the picture back, or there are other pictures problems afterward, you can see what a TV technician would charge to repair the set. I always liked the Toshiba picture quality, so if everything else was working properly and you were happy with the set it might be worth the cost of fixing it.

Mar 25, 2011 | Toshiba 32A50 32" TV

1 Answer

On Toshiba TV model CF35F40 I have replaced vertical output Q301 (TA8427K), I got back the vertical raster but it is out of sync. I tried to find a control to put it in sync but I did not found any. In...


1. Reheat your solder, it could be the culprit, a good soldering technique is needed.

2. Check you minor component, the capacitor for the oscillator part and the filter capacitor.

3. Check also the IC part number from the original, sometimes prefix and suffix thus stand for some minor variations.

Goodluck, this is just to add some info.

Oct 05, 2009 | Toshiba CF35F40 35" TV

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

Toshiba 32a32 chassis tac 245 powers up for 1 secopnd then red power light flashes.


just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part

Aug 17, 2008 | Toshiba 32A32 32" TV

1 Answer

Toshiba 32A32 won't turn on


just fixed one with that problem it was the vertical output ic Q301
that was shorted. try wicking it out. it is a LA7833S.
Postings say to be sure to use the Toshiba part

Feb 27, 2008 | Toshiba 32A32 32" TV

1 Answer

32HFX71 Blinking Pwr Indicator Light


Not likely convergence because it's simply a direct view TV. Could be vertical, a common problem with that unit is the vertical output IC Q301 and poor solder connections of the link off R305. This could be enough to put the unit in shutdown. And it could also be SMPS, possibly regulator or horizontal output transistor - you would need to test these to be sure. The HOT, if shorted, will have continuity E to B or E to C.. If you're not sure you're up to this take it to a reputable shop. What I've described above isn't too serious and a good shop can having back to running good as new in a couple of hours. One tip I might add, take to the shop yourself it will save a few bucks. Good Luck Bill

Jun 14, 2007 | Toshiba 32HFX71 32" TV

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