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11 blinks do not occur to Sony Trintron TVs. It should be 10. Ten blinks - Check Q8014 and Q8013 for shorts,
leakage, or bad solder connections on the " D" board. If the
transistors are bad, check R8051 and IC8005, also on the "D" board. If you wish to get more details about these blinks, check the site linked here. Blinking codes and fault detection to many brand TVs, including Sony are given in detail. These blinks are called, blinking codes, and fault indications. From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside it. Check the site, and get more details.
http://electronicshelponline.blogspot.com/
Pull up previous posts or type in the brand
name and model number to of your set, to its search box, and press 'Enter'
or view it in Mosaic / Timeslide option.
If it
is intermittent 9 blinks, meaning sometimes the TV comes on and other
times you get flashing, then change the switching regulator on the
"G" board or check connections. Make sure the regulator is -12
or -13 (negative). If you wish to get more details about the blinking codes to Sony brand TVs, check this link. Pull up older posts there.
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.
Since the set recovers under some conditions, I would first look for poor solder connections. With a set of your vintage, it is common for some of the connections to become faulty. If you can solder, resolder any connections on the board that appear grainy or have rings. Please note that there are potentially dangerous high voltages present inside the set even when unplugged.
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