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Panasonic tv modle CT36HL44J NO SOUNS NO PICTURE

Found Q551 short on D board, power supply to horizontal circuit checks OK
Q556 checks OK, horizontal drive signal to Q551 checks OK

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  • ps051 Feb 06, 2008

    no that is't the problem checked other suggestions and all are OK any other ideas?

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  • 7 Answers

Obviously a power supply fault I think, you might need a new
LINE OUTPUT TRANSFORMER ( if everything checks out o.k. in the power supply circuitry)

Posted on Feb 06, 2008

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2 Answers

What is the main cause of this problem stand by light flashing


Short circuit indication. There should be a short circuited component/s at its main board. 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. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/

Jan 20, 2015 | Standard (CRT) Televisions

1 Answer

What is cost of yoke for panasonic ct tv?


You're discussing about the width problem to picture. If yoke have a short in between its wingdings [even a single winding short], will cause the failure of horizontal output transistor. As per you report here, the set has a raster, but problem is with the picture width.
There possibliliites for this fault are.
1. Lack of voltage from the SMPS power supply output.
2. Horizontal width capacitor.
3. Horizontal output capacitor.
Check the output voltage from the SMPS section first, and confirm that it is OK.

Jan 03, 2013 | Panasonic CT-24SL13 24" TV

1 Answer

Nec pf-68v21 pwr led flashing red green after horizontal output


check the supply at horizontal driver trans former ,if voltage is correct at ho/driver trasistor ...then check allthe fusible resistances from power supply,,,if tv is taking h/oscillation for awhile ,,give more screen control in lot,,, & see for a horizontal line ,,,before tv becomes off,,, if so vertical ic problem...

Mar 16, 2010 | Standard (CRT) Televisions

2 Answers

Panasonic CT32SF wont turn on


Dont know spec of this model but if it has a CRT (glass tube) display rather than a LCD one, clicking at switch on is idicative of a power supply overload which, 99 times out of a hundred on a CRT telly is down to a fault in the power supply itself or the line output stage (the bit that generates the very high voltages in CRT tellys and also makes the picture scan left to right).
In short, not a DIY fix - take it to a repair shop.

Sep 07, 2009 | Panasonic CT-32SL14 32" TV

2 Answers

Picture on TV ''squeezed'' to center of screen horizontally


Check the horizontal trafo output voltage,the capacitors and the power supply voltage (135-155V dif.the tube diameter).

Aug 14, 2009 | Panasonic Standard (CRT) Televisions

1 Answer

TV suddenly turned off and won't turn on for more than nSec.


Hello kd6aaj, You are on the right track, a vertical line usually means that you lost horizontal deflection which is supplied by the horizontal/High voltage section.The thing that puzzles me is that you did not lose high voltage. Let me explain. In modern TVs the horizontal section uses scan rectification or a process similar to a switching power supply to convert a lower voltage tapped off of the hoizontal/HV section to provide B+ for the rest of the television. So if you lose your Horizontal voltage you lose your B+ also. So you will never see the vertical line because you low voltage power supply if off also. Now I think your Q571 (H-Out), Q572 (H-Drive), Q551 and/or Q552 (H-Control) might be good. However check them anyway. I would also advise you to check your yoke transformer for an open or shorted winding. This would cause you to lose deflection without losing high voltage. You are definatly in the right section just add the deflection section to your scope of troubleshooting.

Sep 10, 2007 | Sylvania SRT2232S 32" TV

1 Answer

Buzzing sound, no picture on my Panasonic TV


You might have a short causing the set not to start. Probably in the horizontal/high voltage circuit. The buzzing sound that you're hearing is the power supply overloaded. Stargazer

Apr 22, 2007 | Panasonic CT-27G23 27" TV

1 Answer

Need some help here


that is one of your problem when any component burn in side a set it means that the tv have a short.getting excessive current.if you are not a tech have a repairman check your set and repair it the power supply or the horizontal out put circuit has a short.good luck.

Mar 29, 2007 | Sanyo DS31520 31" TV

1 Answer

No picture


You have an intermittant vertical sweep circuit! It could be the vertical out put IC solder connections on the printed circuit board, or maybe the IC itself has poor connections between the IC and the contact legs that mount the IC, or another componet in the vertical sweep circuit. If you know how to solder and unsolder, work on printed circuit boards, then you shoul have no problem replacing the vertical sweep circuit. Good Luck

Oct 09, 2006 | Panasonic CT-25G6 25" TV

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