Question about Sharp 25R-S100 25" TV

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Picture uncentered and no on creen display

Black horizontal line on the right side of hte tv screen even I enter the service mode and adjust the horiz. centering take no effect and the osd does`nt dhow up

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  • Anonymous Mar 15, 2014

    How to adjust screen horizontal display

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U have to trouble shoot for leaky capacitors in the video and horizontal circuits/Areas

Posted on Jan 08, 2009

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What is the cause of samsung CB-20A5 tv picture is blinking when I try to reduce the brightness in flyback transformer and also picture is defocused and so many retrace lines in whole screen


If the screen voltage go beyond normal, this kind of fault can occur. Adjusting this voltage; by adjustment of screen potmeter on the FBT is critical. To adjust it to proper voltage, you have to enter its service mode option. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
NB: Please read and understand well, the instructions to enter the service mode, before you begin. Be very careful. Note how to "EXIT" the service mode; after entering and adjusting data. This is very important.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Oct 12, 2015 | Samsung Standard (CRT) Televisions

1 Answer

Ds27425 picture moved forward cannot read channel numbers


Sounds like picture have been shifted horizontally. If you want to adjust the horizontal position, you have to enter its service mode option, and to change the data value there. Contact any service technician. This is a skilled work.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
NB: Please read and understand well, the instructions to enter the service mode, before you begin. Be very careful. Note how to "EXIT" the service mode; after entering and adjusting data. This is very important.
Type in the brand name of your device, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy.

Feb 14, 2015 | Sanyo DS27510 27" TV

1 Answer

RCA F27669 TV horizontal gain control


To adjust the data value to these adjustments, you have to enter the service mode option to your set. There is no external preset resistors [as in the old model TVs] for the new version TVs.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.
NB: Please read and understand well, the instructions to enter the service mode, before you begin. Be very careful. Note how to "EXIT" the service mode; after entering and adjusting data. This is very important.
Type in the brand name of your device, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy.

Feb 11, 2015 | RCA Standard (CRT) Televisions

1 Answer

Sony model KDL32L5000 has a black horizontal line across the display. above the line picture is fine, below the line display is distorted... any ideas?


Faulty vertical deflection section. check the yoke vertical winding. maybe its cure from service mode. search online how to apply service mode of you tv brand, model and board chassis number.

Aug 17, 2014 | Standard (CRT) Televisions

1 Answer

Adjust vertical picture


Without remote control you can't. You have to enter its service mode option to adjust picture size, both vertically and horizontally. If you wish to get some details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Timeslide / Flipcard, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name / model number / IC used, in the search box at the top right of the display window.

Nov 09, 2013 | Zenith B36A24Z 36" TV

1 Answer

Picture cutting off


It sounds that you have to enter its service mode to adjust both vertical and horizontal position of the picture. To Philips brand TVs, entering service mode [SAM] mode, and adjusting data values there must be done cautiously. Really it is a skilled work indeed. It will be best to contact any service technician. For more http://electronicshelponline.blogspot.com/

Jun 03, 2013 | Philips 24PT6341 24" TV

1 Answer

I have 2 black spaces on each side of my screen


The width of the picture is less than normal. It can be adjusted by entering in to its service menu options. But, entering service menu options and adjusting data values there is a skilled task. It will be best to contact any expereinced service techinician ot do this. Or Visit the site named 'Electro-help' for more details. Check this link and select the site. 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. If you are confident that you can do this, just proceed. If not, do not tamper the TV.

Aug 05, 2012 | RCA F27450 27" TV

1 Answer

White lines across tv screen


Without seeing the lines I can't be sure what your set has wrong, but here are a some possibilities:

If the lines are lines are confined to the top inch or two of the screen and the picture looks otherwise normal, the trouble is bad capacitors in the vertical output circuit. Fixable by replacing the bad parts.

If diagonal lines are across the entire face of the picture tube and the picture looks washed out, the trouble is often a bad capacitor on the 200-volt line to the picture tube. This may be on the main circuit board near the horizontal output transformer, or on the small circuit board plugged onto the end of the picture tube. Again, replacing the bad capacitor can fix this.

If your TV is actually an RCA, someone may have bumped a rear-panel adjustment. On the back of the TV near the bottom right are two small knobs. RCA left these adjustments exposed inside of putting them inside the set like other manufacturers. These sometimes get bumped if someone was behind the set cleaning, or if a pet got back there and hit them with a tail. The top knob adjusts focus, and the bottom knob adjusts something called G2 or screen voltage. If this gets turned up too high it can cause the faded picture and diagonal white lines. Turn the adjustment down until a black screen looks black instead of gray.

A bad picture tube or horizontal output transformer can also cause lines through the picture. If this is the case with your set, it's time for a new TV. The transformer is relatively inexpensive but labor costs aren't, and the repair bill may exceed $200. If the tube is bad, there's no point even considering repair. The tube cost alone exceeds the cost of new TV.

Hopefully your lines are easy and cheap to fix. Good luck, and thanks for using Fixya!

Jul 22, 2011 | RCA F35673MB 35" TV

1 Answer

Picture is cut off on sides but not top and bottom. The display channel (default 2) is cut off on the side to give you an idea. (purchased it new around 1998-1999).


With TV powered off, use remote control to successively hit DISPLAY, 5, sound volume +, and POWER all within a second of each other. This takes you to the Service Adjust Mode and the first thing that appears is the Horizontal Size Adjustment "HSIZ". Press numbers 3 or 6 to make the picture larger or smaller. Other things can be adjusted by using numbers 1 or 4 to go through the list but you could really screw up your TV so don't do anything unless you are sure about it. When you're finished hit MUTING and then ENTER to save the changes.

Oct 01, 2009 | Sony FD Trinitron WEGA KV-32FS16 32" TV

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