Tip & How-To about Televison & Video
You try to turn on your Sony TV and nothing happens. Then you notice that the standby light is blinking. Counting determines that it is four blinks about a second apart followed by about a three second pause. Perhaps you see a thin white line in the middle and across the screen.
Your problem is that you have no vertical deflection. Check IC1509, Q1505. These are on the deflection board. If you are not familiar with replacing discrete components look at my tip at http://www.fixya.com/support/r4751428-fix_no_vertica_drive_problem for more help. If you cannot solve the problem using my tip you may just want to purchase a new board.
Fortunately these days circuit boards are not that expensive. I would recommend replacing the defective board. The board with all the power supplies in a Sony is generally the "A" board and contains the High Voltage power supply. This is also where the vertical IC is located. You can determine which board you need by following the four wires from the yoke (coil on the neck of the CRT) to the board where they are plugged into. This is the board containing the vertical IC.
Two of the best places to get the board are http://www.encompass.com or http://www.shopjimmy.com . Prices are similar but both sites are trustworthy and will allow you to return the boards if they are not the problem.
If you haven't replaced a circuit board I have a tip at http://www.fixya.com/support/r6981868-replace_circuit_board_in_modern_tvs which explains the process and should be helpful to complete the repair.
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Posted by Kim... on
Sep 22, 2014 | Televison & Video
Nov 25, 2011 | Sony FD Trinitron WEGA KV-32FS120 32" TV
Mar 25, 2011 | Sony KV-27S45 27" TV
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