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I have a sony KV-24FS100. The TV goes into stand-by and the front LED flashes 4 times, pause, then another 4 times and keeps doing this. I replaced the flyback transformer and the vertical output transister. Does anybody have a solution?
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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. Electro help
Two
blinks - B+ over current protection (OCP), unit goes to the standby mode
then displays the 2 blink fault. Could be a short in the power supply of
any of the circuits. This is the fault. There is over voltage from the voltage regulator section inside. You have to check out the reason for that. In most cased, the will be due to some loose solder terminals at this section.
Visit the site named 'Electro-help' for
more details. Click this link. View it in
"Timeslide" or "Flipcard" option, which can be selected
from the drop down box menu by the [Sidebar] tag, at the top left corner
of the display window. It will make
search easy. There are more than 1300 posts to different brand TVs now. Pull up
older posts there. Check the site, and see whether it can help you.
Four
blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal
line then the video signal muted. Check IC1509, Q1505 Vertical sweep failure. Check all the solder terminals to vertical output IC. If it do not help, replace that IC.
Try to remove the vertical IC sometimes it become Shorted causing the B+ to drop. after removing try to switch on back check the B+ if ok and the LED not blinking then change the vertical IC.
On older Sony, sometimes a power surge causes the set to be in shut down mode. Try unplugging for 5 minutes and then plug in and try. This many times will fix.
your tv had a problem.if you have a knowledge in electronics, check or replace the horizontal transistor beside the plyback. it is a black square parts with 3 pins.
no not at all , may be lot or h.o. transitror ar circuit dry solder, if any problem led red indicator blinks continuesly.. please chek all h.o section...and smps...
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