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Internal problem an electrical short cut fries the component c516, r524 and r525, with the resistent i am fine i can make it work but the c516 is a capacitor and not look like any one else what is it they value??

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But you did not give the model number nor did you give the chassis number

Posted on Jan 26, 2009

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Where to find the capacitor c515 c516 and ic ic206 for a sony tv. kp-fx 532m91


C515,C516, IC206 - you specify here are only the part numbers, and not represent the real value of the component. It is designated as the part position on the circuit board. The real values should be printed on each part. google.com/+GopakumarGopalan

Nov 25, 2013 | Standard (CRT) Televisions

4 Answers

TV power goes off after 2 minutes 45 seconds


There is a contact loose verify with qualified technician for physical setup being tested.

May 20, 2008 | Audiovox AVT1498 TV

1 Answer

No power after storm


You will need to replace it. The storm fried your board for sure, there is no fix for that, and a broken board is useless. you can't really put it back together because the entire surface of an electornics board is conducting electricity through it from component to component. If it could be fixed, it will surely cost you more to fix than buy a new one. Sorry to be the bad news bearer but it is shot, you are left with a giant paperweight.

Sep 28, 2012 | Sony KV-32S45 32" TV

1 Answer

Connot power on


no power at all?, ok lets do a component checking at the regulator in the power supply section which have shorted pin. the at the same time at the horizontal deflection circuit which may have open resistance or shorted component.

Jul 25, 2012 | Sony KV-XR29M61 TV

1 Answer

What is the first step in troubleshooting color television? dead set..blown fuse..


Hello
You haven't specified anything about your Sony Tv. No model number or anything to compare. Although I hereby giving you a general trouble shooting method, first adopted by technicians like me. You have stated that the fude has blown out. Fuse will not burn out without any reason. it is a protective device used in every telivisions,as if any internal components inside it gets shorted, especially in power supply section, the fuse will get burned and protect the other components from further distruction. Therefore you have to trace the reason for the failure of fuse first.
You must beging it from power supply regulator section itself. Chech the resistance accross the main filter capacitor first. Set the multimeter in Ohms range, and the resistance must be above 250Ohms in one direction, and upto infinite in the other direction. If both readings comes below 20Ohms or so, suspect the power regulator Ic; usually sony sets udes STR type regulated power supply, and this STR will get shorted. As you haven't specified your sets model, I can't make sure whether it is circuted with STR or a switching transistor. As both cases, this regulator has a chance to get shorted. Desolder it out and check for short. if it finds shorted, check the rlated components also, such as zener diodes and resistors, for open and short,as they also will get damaged due to this main switching transistor, or STR; whatever may be.
Check the degaussing posistor for short. Check the rectifier stack for short. Check the mains filter capacitor for short. Check each and every diode for short. you must measure the forward reisistance of diodes with multimeter set in 100KOhms range. There shouldn't be any slight leak with this test. If it shows a slight leak, replace it. You just do these and inform me the result through Fixya. I'm ready to assist you furthermore. When you reply to me; please include the model number of your Sony Tv. Ok.

Dec 12, 2010 | Sony Standard (CRT) Televisions

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The picture does not come on when I turn it on.


Hello

Your TV is now in dead condition I should say. You should strart from its power supply regulation section itsef to rectify the fault. Look into the fuse, a glass fuse is there, in power supply board. If It has found blown, make sure that there is something short in either power supply regulator side, of on the other part of the printed circuit board.
You just place a fuse of same rating as used, if the fuse is blown. If the fule you installed newly also blows off, check first the retifier stalk for any leak. The stalk contains four diodes, even any one of them gets shorte, fule will blow up. If there is no leak in the retifier stalk, measure the voltage resistance across the main filter capacitor, a bulky one capacitor fitted in the power regulator section. If you see a full deflection on meter, it means that there is some dead short inside the power regualtor system.
Usually Sony uses STR regulated type power supplies, and some uses MOSFET [Metal Oxide Semiconductor Field Effect Transistors], as switching elements. Bothe of these types can be shorted, due to a high voltage spikes, or a sudden supply failure and restart.
Check out short test on these components, out of board, that is, desolder it out from the circuit board. You just resolder one by one and measure the resistance ad described above. Thus you can find out the exact component, that have a short. If any of these components shorted, check the entire power regulator section for any more component failure, like zener diode short, resistors opened, and so on. You should have a concept of soldering and a little knoledge in electronics. There will be a MOV [Metal Oxide Varistor] fitted across the power supply input, which look like a disc capacitor. it will get shorted when a certain voltage spike occures abvve its rated voltage, and apply a dead short at the supply stage. If any of them used, desolder it out and check for any leak, and is found leaky, replace it. It is used as a saftey measure, and without it the set will work fine.
Just check these and if you find any difficulty, contact me through Fixya. Ok.

Nov 29, 2010 | Sony KV-36XBR450 36" TV

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This morning I tried to turn my RCA TV (model 24R411T) on and nothing happened. I tried plugging it into a different outlet, still nothing. I tried leaving it unplugged about 10 minutes and trying again,...


Hello,

Power surges or nearby lightning strikes can destroy electronic equipment. However, most of the time, damage is minimal or at least easily repaired. With a direct hit, you may not recognize what is left of it!

Ideally, electronic equipment should be unplugged (both AC line and phone line!) during electrical storms if possible. Modern TVs, VCRs, microwave ovens, and even stereo equipment is particularly susceptible to lightning and surge damage because some parts of the circuitry are always alive and therefore have a connection to the AC line. Telephones, modems, and faxes are directly connected to the phone lines. Better designs include filtering and surge suppression components built in. With a near-miss, the only thing that may happen is for the internal fuse to blow or for the microcontroller to go bonkers and just require power cycling. There is no possible protection against a direct strike. However, devices with power switches that totally break the line connection are more robust since it takes much more voltage to jump the gap in the switch than to fry electronic parts. Monitors and TVs may also have their CRTs magnetized due to the electromagnetic fields associated with a lightning strike - similar but on a smaller scale to the EMP of a nuclear detonation.

Was the TV operating or on standby at the time? If it was switched off using an actual power switch (not a logic pushbutton or the remote control), then either a component in front of the switch has blown, the surge was enough to jump the gap between the switch contacts, or it was just a coincidence (yeh, right).

If the TV was operating or on standby or has no actual power switch, then a number of parts could be fried.

TVs usually have their own internal surge protection devices like MOVs (Metal Oxide Varistors) after the fuse. So it is possible that all that is wrong is that the line fuse has blown. Remove the cover (unplug it first!) and start at the line cord. If you find a blown fuse, remove it and measure across the in-board side of fuse holder and the other (should be the neutral) side of the line. The ohmmeter reading should be fairly high - well certainly not less than 100 ohms - in at least one direction. You may need to unplug the degaussing coil to get a reasonable reading as its resistance may be 25 or 30 ohms. If the reading is really low, there are other problems. If the resistance checks out, replace the fuse and try powering the TV. There will be 3 possibilities:

It will work fine, problem solved.

It will immediately blow the fuse. This means there is at least one component shorted - possibilities include an MOV, line rectifiers, main filter cap, regulator transistor, horizontal output transistor, etc. You will need to check with your ohmmeter for shorted semiconductors. Remove any that are suspect and see of the fuse now survives (use the series light bulb to cut your losses - see the section.

It will not work properly or appear dead. This could mean there are open fusable resistors other defective parts in the power supply or elsewhere. In this case further testing will be required and at some point you may need the schematic.

Jun 14, 2010 | RCA 27R411T 27" TV

1 Answer

Prima cr-20sb72 tv


start with products to specs or contact support.

http://www.primaamerica.com/support.asp

Apr 03, 2008 | Prima C2012 TV

1 Answer

Fuse blows when the dgausing coil is connected


If the fuse is blowing when the internal degaussing coil is connected, there is probbaly a shorted turn or multiple turns in the coil. A degaussing coil is made up of many feet of wire, wound in a circle around the perimeter of the picture tube.

When you first turn on the set, the coil is energized briefly and either a thermistor or relay shuts it off after a few seconds. If it didn't shut off, the coil would get very hot. When its activated, the set draws a fair amount of current because the resistance of the wire is low. You can actually hear the buzz on a TV set or monitor when the coil is energized and you can also hear it turn off.

If the normal resistance of the coil has changed, due to shorted turns or something nicking the coil, there will be a larger amount of current draw and the fuse will blow.

Maybe the circuit that shuts it off was defective and the coil stayed on and became damaged.

If the set works fine without the coil, then something has changed in the coil and that tells me that its resistance is now lower than it should be, or its somehow it shorted to ground.

Please let me know if I can be of further assistance to you.

Good luck!

- Jim

Feb 13, 2008 | Samsung TXN3298HF 32" TV

1 Answer

How do i know wether the thermistor is shorted / open, defective?


Hello clydex,

Yes you can use an ohmmeter, however you will need a hot air gun to. Let me explain: There are two types of Thermistors +Temperature coefficient and - Temperature coefficient.

The +temperature thermistor reacts this way: as the temperature goes up so does the resistance of the device this is used when dealing with degaussing coils as the current passes through the coil it heats up the thermistor until the thermistor cuts off the current needed to run the coil.

The -temperature thermistor reacts this way: as the temperature goes up the resistance decreases, this can be seen when dealing with circuits that are designed to short out when excessive current is present. The excessive current causes the thermistor to heat up and the the resistance drops causing the device to short out.

Here is how to do it.: connect the device to the ohmmeter and use the heat gun to heat the component up the value of resistance should rise or decrease.

I hope this helps,
Thank you,
Shuttle83

Dec 23, 2007 | Standard (CRT) Televisions

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