Question about JVC AV-27230 27" TV
Hello gurdev, If all you have is a straight horizontal line across the middle of the screen, you have a vertical deflection problem. This may be caused by the opening of the vertical coupling capacitor, an open winding in the yoke transformer, the vertical drive transistor might be malfunctioning, or the vertical output IC chip might be defective. You will have to check all of these, make sure that you have a schematic, a multimeter, and an oscilloscope. Here is why: 1) schematic diagram to know where parts are and the voltages and signals present at test points. 2) multimeter to measure DC voltages on the pins of components 3) oscilloscope to measure signals at test points shown on the schematic. If you do not have a background in electronics please take your set to a repair shop, however if you have a background in electronics your troubleshooting will be around the vertical section if the tv. Thank you, Shuttle83
Posted on Oct 08, 2007
A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 14, 2011 | Zenith B25A02Z TV
Feb 26, 2011 | Televison & Video
Oct 31, 2010 | Panasonic Televison & Video
Sep 21, 2010 | Sanyo DS19310 19" TV
Feb 01, 2010 | Curtis-Mathis CM27101S TV
Jul 12, 2009 | Sansui Televison & Video
Jun 22, 2009 | Toshiba 32A33 32" TV
Jul 03, 2008 | Sony CMT-EX1 CD Shelf System
May 18, 2008 | JVC AV-27720 27" TV
149 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: