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Overall height stretches the picture vertically each time I change channels and therefore I have to re-adjust the height /linearity on each channel change.

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Sounds like a regulation problem,,check the B+ voltage to see if running correct

Posted on Nov 17, 2009

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That usually is an adjustment made on whatever source you have hooked to the tv. Some tv models will minuliplate the picture but not all.

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You have to get in to its Service Mode option to change the data values of height and linearity adjustment. Visit the site named 'Electro-help' for more details. Check this link and select the site named above. View it in 'Flip card' option, which can be selected from the drop down box menu at the left top corner or the display window. It will make search easy. Some times, the ads attached with each posts might help you to find the availability of spare parts. There are more than 580 posts to different brand TVs.

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Vertical and horizental picture expand and please help me to adjust it


It might help if you listed the brand and model of your TV, but usually on the remote you will see some sort of mode button. You can change the picture size there. Or you can go into your system menu and change it in the display menu. The typical ones are widescreen, zoom, stretch, etc. Also try changing the picture aspect ratio. 16:9 will give you widescreen while 4:3 will give you regular. Also, another problem might be that the channel you are watching or your cable box is not in HD. If the channel is not specifically an HD channel, the widescreen setting will not work properly and you will need to adjust it to a different setting to keep from getting the black bars on the side. Hope that helps.

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Needs vertical height adjustment


Is the picture stretched or shrinking and is it distorted or have lines? There are no vertical Height adjustment the circuit is prest and there is likely a problem in the vertical o/p circuit.
The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

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hi! he might have adjusted the vertical hold and height including the linearity. normally on the board you would see a trimmer resistor with a label v-hold this is to stop the rolling, v- height for the size of the picture. and linearity for the evenness of the picture from top to bottom.

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Its the capacitors going bad. I believe you will see them as a pair.

Feb 24, 2009 | Panasonic TH-37PX60U 37 in. Plasma HDTV

1 Answer

TALL PICTURE


Hi,

On most TV units, there would be two (2) adjustments that affects your concern:
  • vertical Linearity (VLin); and
  • Vertical Height (VHt)
However, newer designs no longer have these adjustments since they are automatically done by the circuitry. If for some reason height is incorrect in such a system, then chances are that there is a leaky/defective capacitor in the vertical section.

Hope that this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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you have a vertical linearity problem. change the vertical output and components.you need a qualified tv technician to solve this problem

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TEAC CT-M685


This is a vertical-deflection problem. Try to adjust the vertical (height and linearity and hold) controls, which should be screwdriver potentiometer controls on the back of the set.

If this does not work, a defective component in the vertical-deflection circuit will need to be repaired.

I hope this helped you. :)

Mar 30, 2008 | Televison & Video

1 Answer

Mkgregory


If the TV supports it, you can go into service mode by press ing the following on the remote control:

062596 i

This will take you into a service menu. It also changes channel as you press the keys, so change to a used channel to get a picture back.

I am not familiar with this model, but the principles should be the same.

Using the remote control to navigate the menu, you are looking for "allignments", and from there "Vertical Amplitude" or V/AMP or VA or similar.

BE CAREFUL when making adjustments, as you can permanently damage the TV if you adjust any critical settings.

When making changes, make a note of the original setting so you can put it back if its not the right option. Also only make changes 1 notch at a time. It will be obvious when you have the correct option, so if nothing is happening after 2 or 3 notches, then put it back. This will minimise risk to the TV.

When you have finished, look for a "Save settings" option, if not just press standby to get out of the service menu.

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