At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Monitor horizontal lines problems usually caused by a defective vertical output/driver ic. A missing supply voltage to the vertical output ic may caused similar faults which is one horizontal line across the display. Dry joints and missing vertical output pulse from vertical oscillator ic also could contribute the same symptom. If you discovered that the protection resistor (usually from 1 to 4.7 ohm) open circuit or burnt, then replacing it won't solve the problem. The resistor burnt or open circuit was due to a short in the vertical output ic. Thus you have to replace the vertical output ic and the burnt resistor together before you switch on the monitor.
Dear Jeff, It seems like the Horizontal IC in your TV is dying. This and the Vertical IC is responsible for displaying images on your TV. (Look at your TV through your Phone Camera and you will see upward scrolling lines.This is the Horizontal IC in action.) I would strongly advise you to get your TV repaired immediately.
hi if only a horizontal line across with no video anymore, you have bad either vertical ic or no dc supply b+( vertical ic ) or no output dc coming from the ic. if it is not totally a horizontal white line and you can see a video you must check leak or bulged capacitors at the vertical section near the vertical ic. hope this can help good luck.
The horizontal line in the screen is the problem cause by vertical output driver.The vertical output is located at the verical section.Maybe theres a loose connection in vertical section or leaked capacitor.It also the cause of deffective vertical ic.So its better to repair and trouble shoot by the authorized technician.If you have knowledge in Tv.Try to replace the leaked capacitor.
Hello
It is due to total loss of vertical scaning. Your TV has both vertical and horizontal scan at predetermined frequencies to show the picture over the entire screen. If vertical scan fails, you will see a bright horzontal line, and if horizontal scan fails you will see a vertical line through the middle of the screen.
In your TVs case, there is no vertical scanning now. Usually this may be due to failure of Vertical Output Ic. In some cases, loose solderings on the sodered ponts of vertical Ic legs are noted.
Anyway, you have to open your TV. You must have a concept of soldering, and ability to locate and isolate faulty component. Usually vertical output Ics are screwed into a heatsink metal inorder to radiate heate from it while working. Locate the Ic, and look for any loose solderings first. You can determine it by giving a small hit with any noncuductive material like wood or so, never use a pencil for this as the core pf the pencil ic composed of Graphite, and it is electrically conductive. When you do so, if picture scans vertically for atleast a moment, you can make sure that the solderings are loose. Just resolder all the legs of that Ic, by applying a little more solder; will solve the problem
Just try these, and if you need any more help, ask me through Fixya. Ok.
Your vertical IC may have bad grounds. Resolder the pins on the vertical IC. You will also need to replace a capacitor or two that are located next or very near the vertical IC. I would guess you are concerned about a horizontal line that runs east to west across the screen. The info just mentioned will fix your problem. Give me a few hands and thanks for asking me!
IT IS VERTICAL OUTPUT SRAGE FAULTY. FIRST CHECK SUPPLY VOLTAGE 18VDC. THEN CHECK OUTPUT VOLEGE 15VDC.IT IS UPNORMAL FINALLY CHANGE VERTICAL OUTPUT IC.BEFORE CHANGING IC CHECK ALL THE COMPANENTS IN THE VERT.STAGE
Resolder the vertical IC and replace those capacitors near and next to your vertical IC. If the horizontal line still appears, you may have to replace the IC. Thanks for asking and be caredful!
This is a problem with the vertical circuit and is relatively common. If you can solder you can fix this yourself. First try resoldering the pins on the vertical IC. If that fails to resolve the problem, replace the IC. This IC is a small flat IC attached to a heatsink having about 11 pins or so. Is will be marked LA7837 or something similar. Post the marking here and I'll confirm the part.
×