A technitian just replace the power supply and a voltage regulator, he left and then the tv will power off after 11 to 15 minutes of runing. I know it is not the timer, because the timer mode is off not activated.
another thig is the colors are not the same on the left there is alot of green, middle ok, left side a lot of red, the guy said the tv has a built in system that would clear the colors automatically in 3 weeks . is that true ?
thank you.
I have no macnetic sources near the tv no speakers etc. when the tv powers off by itself , and I power it back on yes it startb back on some times the second try. Is there anything I personally can do to fix the rainbow colors , to make it go to where they are supost to be ? THANK YOU again.I have no macnetic sources near the tv no speakers etc. when the tv powers off by itself , and I power it back on yes it startb back on some times the second try.
Is there anything I personally can do to fix the rainbow colors , to make it go to where they are supost to be ? THANK YOU again.
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He probably means the Deguassing coil, which is around the set. This is needed when the set is first turned on. Because of the earth polarized field, when you turn your set to the east, west or just a different degree, it affects the Deguassing area. This sometimes looks like a rainbow affect in your set, and sony's are bad about them. But all in all Sonys are good sets. If it does not go away it could be a problem with your picture tube, or the is a Magnet somewhere close by, like speaker or some type of big magnet. If so then remove Magnet and turn off and on until disappear. Is the pic good when running? Does the set comes right back up if you press power and wait another 11 to 15.?
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"Won't turn on" is very vague but the likely cause is you don't have it plugged in! If it is not that then the switch mode power supply has shut down and the most common cause of that is electrolytic capacitor failure within the power supply. It takes skills and specialized tools to work on such power supplies, so you can't do it yourself. Replace the entire power supply, that is one option or take it to a skilled repairer who has the right components. There are other causes of "won't turn on" in a TV, but the above is 95% the main cause.
Fault to the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/
If Vs & Va voltages will differ to an extent, this type of fault can occur to Plasma TVs. The adjustment to these voltages are possible, and the adjustments presets are there at the power regulator board. Please contact any service technician before replace the power board. Even though you replace this board, you have to adjust the above said voltages after fitting the new power board too.
A switching regulator is a bit of electronic circuitry that regulates the voltage conversion on a switching power supply, Modern TV sets have switching powers supplies that converts the 120V AC to DC voltages that drives the circuits. You may have to replace the power supply.
Good day!Follow this D.I.Y procedures to find the exact problem of your TV.
Remove the back cover of your TV.
After that,find the power supply board.
If you already found the power supply,plug-in your TV
and power it ON.Check the input voltage of it,using multimeter (AC
range).If the power supply have no input voltage the problem could be
the power cord.Replace it.
If the power supply have the input voltage,try to test
the output voltage if have 5vdc for the system and logic supply,12vdc
for the sounds and 24vdc for the back-light inverter.Use your multimeter
tester (DC range) to test that.
If the power supply have a voltage outputs such as
5vdc,12vdc and 24vdc and the problem is still there.The problem could be
the main board.Replace it with the same type and model # because the
main board is no very difficult to fix and its very sensitive.
If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
Fuse: Check the fuse if it is busted or blown.
Power transistor (regulator): Check the regulator if it is shorted or leak.
Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.
I hope this solution will be helpful.Thank you and good luck.
Good day!Follow this D.I.Y procedures to find the exact problem of your TV.
Remove the back cover of your TV.
After that,find the power supply board.
If you already found the power supply,plug-in your TV
and power it ON.Check the input voltage of it,using multimeter (AC
range).If the power supply have no input voltage the problem could be
the power cord.Replace it.
If the power supply have the input voltage,try to test
the output voltage if have 5vdc for the system and logic supply,12vdc
for the sounds and 24vdc for the back-light inverter.Use your multimeter
tester (DC range) to test that.
If the power supply have a voltage outputs such as
5vdc,12vdc and 24vdc and the problem is still there.The problem could be
the main board.Replace it with the same type and model # because the
main board is no very difficult to fix and its very sensitive.
If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
Fuse: Check the fuse if it is busted or blown.
Power transistor (regulator): Check the regulator if it is shorted or leak.
Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.
I hope this solution will be helpful.Thank you and good luck.
Good day!Follow this D.I.Y procedures to find the exact problem of your TV.
Remove the back cover of your TV.
After that,find the power supply board.
If you already found the power supply,plug-in your TV
and power it ON.Check the input voltage of it,using multimeter (AC
range).If the power supply have no input voltage the problem could be
the power cord.Replace it.
If the power supply have the input voltage,try to test
the output voltage if have 5vdc for the system and logic supply,12vdc
for the sounds and 24vdc for the back-light inverter.Use your multimeter
tester (DC range) to test that.
If the power supply have a voltage outputs such as
5vdc,12vdc and 24vdc and the problem is still there.The problem could be
the main board.Replace it with the same type and model # because the
main board is no very difficult to fix and its very sensitive.
If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
Fuse: Check the fuse if it is busted or blown.
Power transistor (regulator): Check the regulator if it is shorted or leak.
Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.
I hope this solution will be helpful.Thank you and good luck.
When the TV is not turning ON it doesn't mean that there's a busted fuse inside although it have a possibility.There are a lot of causes to be considered.Like shorted transistors,leak capacitors open resistors and shorted diode.
Follow this D.I.Y procedures to find the exact problem of your TV.
Remove the back cover of your TV.
After that,find the power supply board.
If you already found the power supply,plug-in your TV
and power it ON.Check the input voltage of it,using multimeter (AC
range).If the power supply have no input voltage the problem could be
the power cord.Replace it.
If the power supply have the input voltage,try to test
the output voltage if have 5vdc for the system and logic supply,12vdc
for the sounds and 24vdc for the back-light inverter.Use your multimeter
tester (DC range) to test that.
If the power supply have a voltage outputs such as
5vdc,12vdc and 24vdc and the problem is still there.The problem could be
the main board.Replace it with the same type and model # because the
main board is no very difficult to fix and its very sensitive.
If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
Fuse: Check the fuse if it is busted or blown.
Power transistor (regulator): Check the regulator if it is shorted or leak.
Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.
Thank you and good luck.Please don't forget to vote and rate my answer.
Actually if your TV have problem like that it is not on the inverter.That problem could be on the power supply or the system board.
Follow this D.I.Y procedures to find the exact problem of your TV.
Remove the back cover of your TV.
After that,find the power supply board.
If you already found the power supply,plug-in your TV and power it ON.Check the input voltage of it,using multimeter (AC range).If the power supply have no input voltage the problem could be the power cord.Replace it.
If the power supply have the input voltage,try to test the output voltage if have 5vdc for the system and logic supply,12vdc for the sounds and 24vdc for the back-light inverter.Use your multimeter tester (DC range) to test that.
If the power supply have a voltage outputs such as 5vdc,12vdc and 24vdc and the problem is still there.The problem could be the main board.Replace it with the same type and model # because the main board is no very difficult to fix and its very sensitive.
If the power supply have no output voltage or the voltage is too low,just ignore the step # 5 because the problem is not on the main board,its on the power supply board.
Check the following to fix the power supply board:
Fuse: Check the fuse if it is busted or blown.
Power transistor (regulator): Check the regulator if it is shorted or leak.
Resistor: Check the resistors specially the one that have a low resistance that near the power regulator.
Capacitor: Also check the capacitors if it is leak or bulging top.
NOTE: If you found any defective parts or components that mention above replace it with the same value,type and ratings.
I hope this solution will be helpful.Thank you and good luck.
I have no macnetic sources near the tv no speakers etc. when the tv powers off by itself , and I power it back on yes it startb back on some times the second try.
Is there anything I personally can do to fix the rainbow colors , to make it go to where they are supost to be ? THANK YOU again.
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