Question about Curtis-Mathis CM27101S TV

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Horizontal adjustment. tHE PICTURE goes above and below the screen, so the heads are being cut off, there are no visible knobs to adjust the horizontal settings. HELP

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  • Shawdom1 Nov 16, 2008

    tHE PICTURE goes above and below the screen, so the heads are being cut off, there are no visible knobs to adjust the horizontal settings. HELP

  • mikept Dec 12, 2008

    The picture goes above and below the screen. How is it adjusted?

  • sarthur203 Dec 27, 2008

    the bottom of my screen is over lapping on itself.

  • jennifercrow Jan 24, 2009

    Mine is doing th same thing.

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I have the same problem. Just what is the repair?
Garry Meyer gfm001@aol.com

Posted on Jul 27, 2008

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My RCA tv picture is jumping


Vertical jumping may have a vertical hold issue, horizontal may have a horizontal hold issue. Most older tv sets will have some knobs or adjustable screws for vertical and horizontal hold. Turn your set on and check for these knobs on the back of your set and adjust until your picture is in as well as you can get it

Aug 21, 2014 | Televison & Video

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Kitchen table, Screen (G2) voltage adjustment, Course 101


Well, those of you who have no idea why a Screen Voltage (technically known as G2) adjustment may interest you, here is a photo of a bad adjustment (too high).

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You may also experience smeared colors… this is caused by a low adjustment. To correct this, we need to get the back off of the TV. It would be a good time to unplug it if you have not already done so. Next we locate the FBT (Fly-Back Transformer).

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This is a 20” model and it has 2 knobs. Your FBT may vary, as some slim designs and some large tube models may have 3 knobs.

You will need to look closely at the knobs; they will be labeled “Focus” or “Screen”. On units with 3 knobs, there will be 2 focus knobs and 1 screen. For now, we will be working with at the Screen knob only.

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With the adjustments identified, we are ready to plug the TV in (including your standard cable connection) and turn it on… BECARFUL!!! For the rest of this adjustment, we will be working inside of an electrically charged TV. We also need to normalize the picture, so go into your TV menu and adjust the Picture and Brightness settings to the middle or center.

If your TV normally displays a black screen when you do not have a signal connected, ex: Video input 1, then this will be the quickest and easiest setup for you to use. However, if you are not so lucky, you may need to bust through your DVD video collection and find a “between scenes” shot that you can pause on to give you as black of a picture as possible. Eliminate as much light in the room as you can (just remember, you still need to see what your doing)… we want a good view of the screen without the interference of ambient lighting.

Once you have your black screen all set, we are now ready to proceed to the adjustment. If you have lines on the screen, see (HIGH)… if you have color smear, see (LOW).

HIGH: If you have some lines in the picture with a washed out appearance, your Screen voltage is too high. You will need to turn the Screen knob on the FBT counter-clockwise. Do this slowly, until the lines are no longer visible. If you still have a small amount of illumination coming from the screen, back it down a touch further until this just disappears.

LOW: If you have smeared colors in the picture that seem to trail of the edges, your Screen voltage is too low. You will need to turn the Screen knob on the FBT clockwise. Do this slowly, until you just see some lines zigzagging top to bottom on the screen. Now, you will need to turn the Screen knob on the FBT counter-clockwise. Do this slowly, until the lines are no longer visible. If you still have a small amount of illumination coming from the screen, back it down a touch further until this just disappears.

The final set, switch the TV input over to your cable input and check out the picture. Take a good look at some bright scenes and dark scenes. Do they look ok? Adjust the Picture and Brightness in your menu… can you set the picture to your liking? If so, you are all set. If not, double check your work (remember to normalize the Picture and Brightness setting).

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If you are unable to adjust the Screen voltage as described above, you may have a High Voltage problem with your TV. This will require a repair and is not covered by this tutorial.

If you are all set and the adjustment is good, we should have a quick look at the focus adjustment. Return the TV to your Black screen setup. Press the TV menu button to give you nice fixed display to focus. Adjust the focus knob(s) until you have the clearest picture. It’s important to balance the center of the picture with the corners of the picture. If the center is too sharp and the edges and corners are blurry, it is not a good adjustment. Do your best, you are the final judge of your work here.

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Once you have finished the adjustments and verified the picture with your cable picture, you are ready to close it up and return the TV to normal service. Unplug the TV, replace the back cover… enjoy!

I hope this was helpful. If you benefit from this tutorial, please leave some feedback.

on Mar 21, 2010 | Televison & Video

Tip

How to set convergence on Projection TV ' s


I have given an general explanation on most projection TV ' s

  1. Enter the menu on your TV. Use the remote control and bring up the menu.
  2. Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."
  3. Select a color. You will have red, green and blue to choose from. Do each one, starting with red.
  4. Press "Enter." A crosshair pattern will appear on your screen.
  5. Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.
  6. Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.
  7. Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.
  8. Repeat these steps for all colors.

on Mar 18, 2010 | Televison & Video

2 Answers

My picture is doubled on my toshiba TN50V71 as if there is a shadow behind everything? Please help!


hi, sounds like a convergence issue. try this...
  • Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.

  • Enter the menu on your TV. Use the remote control and bring up the menu.
  • Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."
  • Select a color. You will have red, green and blue to choose from. Do each one, starting with red.
  • Press "Enter." A crosshair pattern will appear on your screen.
  • Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.
  • Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.
  • Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.
  • Repeat these steps for all colors.
    good luck!
  • Feb 02, 2011 | Toshiba TN50V71 50" Rear Projection...

    1 Answer

    Can headlights be manually adjusted on MK4 Renault Clio's?


    hi kate the vertical and the horizontal(meaning left/right) can be adjusted there are two screw adjusters if you check on top of crossmember that is above radiator/head lamps there is a hole above each head light and below tese holes you will see x/head screws one for each h/lights vertical up/down adjustment screw down raises beam and no need to adjust horizontal however ? this adjustment is best done using correct equipment and if not done correctly ? cars next mot which checking h/lights is part of test i would advise having adjst ment checked 1st b4 altering hope this helps ? best wishes from the uk

    Mar 21, 2010 | 2006 Renault Sportwagon

    1 Answer

    How do you adjust the picture? Mine is zoomed in


    Is this set using a cable or satellite box? I looked at the owners manual and did not see any format adjustments. If it is hooked to a box, check the settings there.

    Oct 14, 2009 | Sony KP-61S75 TV

    2 Answers

    Horizontal adjustment


    This unit will need to be opened up to adjust that horizontal problem, There are 3 knob looking things in the unit with a phillips head adjust those until the screen moves up. I would not do it if you do not know how I would take it and pay $15 bucks to have it done. If you find this information useful? please rate Fixya if you still dont findit fixing the problem rate 1 knotch below fixya.

    Apr 24, 2009 | RCA 14F512T 14" TV

    1 Answer

    Further assistance needed


    I just replied you and here once again...

    Please pull front speaker grill and find focus block, fixed at corner having 6 control knobs on it.
    Find Blue Screen control knob there.
    Put your TV in AV mode to get dark screen and just press Display button on remote to have AV display.
    Now slightly rotate control knobs counter clock wise until thin lines (retrace) disappear. Job is done and put back speaker grill, press display button again to disappear screen display.

    Dec 13, 2008 | Sony KP-51WS500 51" Rear Projection...

    1 Answer

    Picture is cut off on the bottom of my Hitachi 57F500


    Verical position is hard to adjust and is in service menu. A service manual will get you there, but you might get lucky with the vertical size adjustment. If you open the front of the TV, the vertical size is adjusted with a knob on the deflection board. Remove the speaker grille and take off the access panel. You will see two knobs, one horizontal and one vertical. Be careful, those red wires have 30,000 volts on then, don't touch anything but those knobs. If its just an adjustment, the v-size knob will fix. Set it so ESPN ticker is just above the bottom of the screen. *Service mode - the manual tells little but entering is done by "press and hold the input button, press the power button, release both after you hear HV come up" .. the v-pos parameter is in there, but this manual doesn't say where or how to adjust, procede at your own risk. If you get into trouble, pull the power so you don't save any settings. I believe you just navigate through the menus to find the parameter and use arrows to adjust. Enter may save. Sorry the service manual I have tells nothing much.

    Dec 07, 2008 | Hitachi 57F500 57" Rear Projection...

    1 Answer

    Bottom of picture is not all the way visible.


    you need to adjust the vertical setting on your tv set. are you a tech person? if you are just follow these instructions. turn the tv off and unplug it. take the back of the tv off. you will find the screen and the crt tube. on the tube, you will find the yoke of the screen follow the four wires coming down to the board. you will find small knobs. you will find writing next to these knobs. look for vertical phase. once you find it. now you have to plug the tv and do this live. be carefull. once you see the picture on the screen. adjust this knob till you see the bottom. good luck

    Apr 17, 2007 | Orion STV2763 27" TV

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