Question about Sony FD Trinitron WEGA KV-32FS120 32" TV
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Posted on Jan 02, 2017
SOURCE: STANDBY LIGH BLINKING 9 times...
I have a Sony SRS BBE Trinitron (WEGA). The last few days when I tried to turn it on using the remote the Red Light would go on but the TV did not turn on. I would have to press the power button again to turn it on.. I tought the remote battery was just low.
Today when I tried to turn it on nothing is happening and the Red Light is blinking 9 times ??? I tried to unplug it and try it again, still does the same thing ???
We need help...
Posted on Jun 21, 2009
HI, this is the result of an unstable power sector in this unit. the fly back is malfunctioning and, you will need to replace it asap. i will list the part number below and a link to a site as well. you can purchase this part on-line if you wish.
FBT ASSY NX-4521//X4
Sony Part Number: 1-453-310-11
CLICK HERE TO ORDER
Posted on Jun 21, 2009
error code 4 is vertical deflecton failure . replace the vertical deflection ic. and the electrolytic capacitors in the vertical circuit. Or if you are lucky just resolder the vetical IC and resolder th horizontal section too.
Posted on Sep 28, 2009
Seven blinkd of standby light in Sony TVs denotes a High Voltage Shutdown. Sony TVs have a special circuit built into, called Self Fault Daiagosis. This stage will detect the faulty stage and will give its symptoms in the form of blinks, and are codes to understand the fauty stage inside.
Here in your TV, its Extra High Tension [EHT] voltage at the final anode of the picture tube exeeds its maximum, that is it goes beyond 30KV (30,000VDC], and it is dangerous, that such high voltage will cause X ray radiation from the tube, and the above ciruit sense this condition and gives you a code of seven blinks.
To rectify this fault, you must begin with its main power regulation section. Plug out the TV from AC mains, and open it. Locate the power regulating system. It is easy, that the mains wire goes directly to that section. Which will have a fuse and large filter capacitor, retifier stalk, and an STK Ic screwed onto a heatsink. The STK Ic is the power regulator. It will heat up to more than 70 degree centegrade, and this heat will spread to its surroundings. There are some small capacitors, electrolytic types, are there, has a chance to reduce its actual value due to this heat, and value reduced capacitors will make problems to the actual regulation. you just replace all that capacitors first, keep an eye on its polarity, ie electrolytic capacitors have positve and negative terminals. There will have 5 or so of them, which will not cost too much, and easy to get from any electronic spare part shop.
Check all the soldering points in the power regulator section for any loose or bad solderings. It is best to resolder all the suspected soldering points by applying a little more solder, that loose solderings are very difficult to detect. Resolder all the pins of the above said STK Ic.
Then find out the secondary voltage stage, secondary side of the SMPS transmormer, a small transformer fitted to this section. For 30" TVs, the secondary main voltage will come around 125VDC to 130VDC. There is no adjustment controls for adjusting this voltage, as STK Ics are very accurate in regulation. If it seems to be more than the voltage said above, STK ic may be defective, and should be replaced with an identical type and number.
Before checking the secondary DC voltage said above, just disconnect the supply rail which goes to LOT said above, otherwise the set will shutdown, and there will be no chance to measure this voltage.
Just keep in mind that the power regulator system of your TV has the trouble. You just do these first, and if any more assistance needed, contact me through Fixya. Ok.
Posted on Nov 28, 2010
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