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Re: No picture, No sound
If the set is dead after the popping sound, then it has probably blown a component due to high voltage. Everything inside a tv starts with the power supply. Nothing will work unless the power supply is 100%. I don't know what your rates for repairs are in general, but the price sounds good. The final decision is yours to repair or replace. Good Luck, JUS004
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This is usually indicative of a power supply or power board failure inside the unit. Unfortunately there is no easy fix and you will need repairs. Please contact Sony to see how you can go about getting a repair scheduled, or check with a local TV repair shop in your area. Sony's number for this department is: 239-768-7547
This sounds like a problem with the power supply. Usually capacitors on the power supply board tend to dome, bulge or dry up. The damaged ones can be seen on the power supply circuit board when the back is removed. The dry ones have to be removed and tested. The caps can be replaced at a repair shop for around $200, but if the power supply board has to be replaced it can cost a little more. It all depends on the shops repair fees.
the tv has one part of the power supply working this is needed to have the microcontroller ready to work. But the tv needs more than that for work im talking 'bout the high voltage power supply who is now damaged. the parts required depends on the diagnosis in the bench but at least two are needed. the cost of this repair of course depends in how many parts are going to be replaced, but i concider this repair kind of average in this technology.
Something did Pop and yes it will cost 150 - $300 to repair. The question is what would a new unit of the same size and quality cost. If the repair is about a third of the cost of a new unit , it would still be considered economical in RSA. If repaired it may run again for another 4 years so the Math speaks for itself. The decision entirely yours in the end. It could really be anything that popped so to give advice would be difficult. However, try the fuse first. It is certainly the cheapest option at the moment. Regards and good luck, JUS004
It sounds like the high voltage circuit got damp and arced. This arc caused the horizontal output transistor to short.
You might try replacing the output transistor if you're experienced in this type of repair. If not then you need to take it to a repair shop.
The "whistle " you're hearing is the power supply indicating that it has a short on its load. When the power supply has an over load (short) its frequency drops down when your ear can hear it oscillating. This type of power supply is a switching power supply normally operating a several thousand hz(cycles) which is out of range of human hearing.
It is a power supply problem. As your set is nine years old all the electrolytic capacitors at the power supply area may be out of range. If you are not familiar with electronic repairs it is bettter to take to service center to check and decide according the cost you will asked.
A complete circuit board is available BUT would cost you more then a new set. These sets now a days are repaired down to the componet level and these sets have no user replaceable parts. If you have a capacitor checker then maybe you can find on that goes bad in these . there in the sweep supply or in the standby power supply, but if your not a trained electronic tech you should not be experimenting inside this thing. 2 to 3 years is about normal with these things. You can get one for about 100 or so if you looked around. it would probably cost you 125 or so to have a pro fix it. GGood Luck
that sounds like the Hi voltage transformer went bad.. If your a tech simply disconnect the horizontal output transistor and see if thats shorted. If it is then it is for sure the HV transformer. If its not shorted look in the main power supply. Its cost is around 40 bucks or so and the transistor is about 15 to 20 bucks. This entire repair should cost ya around 150 to 175. So if you decide this tv is the one you like then have it fixed. Good Luck