Question about Pioneer SD-P50A5-K 50" Rear Projection Television

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Vertical deflection problem

I have a pi9oneer model SD-P4553 and the tv is out of alignment there is ableck bar across the bottom of the screen. Can you tell me how to fix this step by step, thank you

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  • nd_graham Jul 13, 2008

    I have a pioneer model SD-P5075-K and the tv is out of alignment there is ableck bar across the bottom of the screen(Pink & Green double image). Can you tell me how to fix this step by step, thank you

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I only see half a picture on screen/

Posted on Apr 21, 2008

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Vertical foldover on bottom of 32 inch samsung lcd tv about 3 inches across bottom of screen


usually on all image related problem on all LCD comes from faulty t-con board..but for sure try to play dvd movie to test if the problem is on tv/t-con...

Jul 18, 2012 | Televison & Video

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No verticle deflection


NO VERTICAL DEFLECTION MEANS YOU HAVE A HORISONTAL BAR IN THE SCREEN?, Check the power supply for the correct voltage to the vertical circuit, check the vertical DRIVER circuit, check the conductivity of the YOKE (vertical winding) on the neck of the tube

if you have a VERTICAL bar in the screen (common mistake) check all of the above relating the HORISONTAL circuit

good luck!

Jan 13, 2011 | Sanyo DS27800 27" TV

1 Answer

Have a 29 inch 5 or 6 yr old rca color tv lately we get a colored horizontal bar across the top of the screen and the other day we have fuzzy black lines across the entire screen


Hello,


CAUTION: To prevent damage to the CRT phosphors, immediately turn down the brightness so the line is just barely visible. If the user controls do not have enough range, you will have to locate and adjust the master brightness or screen/G2 pots.

A single horizontal line means that you have lost vertical deflection. High voltage is most likely fine since there is something on the screen.

This could be due to:

Dirty service switch contacts. There is often a small switch located inside on the main board or perhaps accessible from the back. This is used during setup to set the color background levels. (On some sets, this is located on the CRT neck board and may be a jumper plug or other means of selecting service mode - not an actual switch.)

When moved to the 'service' position, it kills vertical deflection and video to the CRT. If the switch somehow changed position or got dirty or corroded contacts, you will have this symptom. Flip the switch back and forth a couple of times. If there is some change, then replace, clean, resolder, or even bypass it as appropriate.

Bad connection to deflection yoke or other parts in vertical output circuit. Bad connections are common in TVs and monitors. Check around the pins of large components like transformers, power transistors and resistors, or connectors for hairline cracks in the solder. Reseat internal connectors. Check particularly around the connector to the deflection yoke on the CRT.

Bad vertical deflection IC or transistor. You will probably need the service manual for this and the following. However, if the vertical deflection is done with an IC, the ECG Semiconductor Master Substitution guide may have its pinout which may be enough to test it with a scope.

Other bad parts in vertical deflection circuit though there are not that many parts that would kill the deflection entirely.

Loss of power to vertical deflection circuits. Check for blown fusable resistors/fuses and bad connections.

Loss of vertical oscillator or vertical drive signals.

The most likely possibilities are in the deflection output stage or bad connections to the yoke.

May 30, 2010 | Televison & Video

1 Answer

How do you fix a white horizontal line across top of Orion TV?


Hello eatkinson,

This denotes a problem with the vertical deflection circuit. This is more then likely the result of the vertical coupling capacitor failing. You will need the schematic diagram of the TV to find the capacitor in question. it is located between the vertical output stage and the vertical deflection winding of the yoke transformer. In addition check the continuity of the vertical winding of the yoke transformer this can cause the same problem. In any event the problem is that the vertical deflection signal is not getting to the yoke transformer or the yoke transformer is malfunctioning.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Apr 08, 2009 | Orion1934 19" TV

1 Answer

Vertical problem,


chek tje vertical deflection yoke winding and the socket. readjust the vertical height control.hope this will help.

Feb 05, 2008 | Samsung TXM3096WHF 30" TV

1 Answer

Jvc av-29ts2ek


It sounds like a vertical deflection problem. You mentioned you had a white HORIZONTAL LINE in the middle of the screen. If this line runs from left to right across the screen it's in Verticla deflection. If it runs from top to bottom, it's in Horizontal deflection. I am assuming the problem is a Vertical deflaecion problem. The repairs necessary are most likley to replace the vertical capacitors or the verticla deflection chip.
Good Luck
Ed
NC Electronic Mills, Wyo USA

Jan 05, 2008 | JVC TM-2703SU 27" TV

2 Answers

Pioneer Tv SD-P4553


You have incomplete vertical deflection at bottom of screen. Replace C155(2.2uf@16v) on video/deflection assy. Use part number ACH1131

Feb 03, 2007 | Pioneer SD-P50A5-K 50" Rear Projection...

1 Answer

Samsung syncmaster 204b


Yes. There is no vertical deflection. The circuit that controls vertical deflection is bad. This is an easy fix for a TV tech. Take it to the TV repair shop.

Dec 14, 2006 | Samsung SyncMaster 204B 20.1" LCD Monitor

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