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Need to know which optocoupler ic is used in str 6267 based power supply in sony trintron crt tv

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Sony FD Trinitron WEGA... Repair Questions - Fixya

www.fixya.com/.../p228979-sony_fd_trinitron_wega_kv_36fv310_36_t...
Hello, i have a sony FD Trinitron WEGA #KV-36FV310 ... Need to know whichoptocoupler ic is used in str 6267 based power supply in sony trintron crt tv.

Sony KV-TG21M61 21" TV Repair Questions,... - Fixya

www.fixya.com > Forum > Standard (CRT) Televisions > Sony
Need to know which optocoupler ic is used in str 6267 based power supply in ... My sony crt Tv totally dead when touch any components and the IC strs6307 ...

Tv code hi i'm looking for a 3 diget programming code for my ...


Posted on Dec 25, 2015

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: sony color TV model kv-c29 11d blown power supply ic and transist

There should be circuit designations printed on the PC board. Without those, there are too many possibilities to give you anything useful. Can you provide those please?

Thanks,
Dan

Posted on Jan 21, 2009

  • 1 Answer

SOURCE: 54cm Goldstar tv Model no: CZ 20A 90Y

ordinary zener diode

Posted on Mar 28, 2010

atelier mj
  • 70 Answers

SOURCE: HI I HAVE SONY TRINTRON TV I NEED TO RESET THE TV

I already seem this on that model and it was a short diode D503 part # BY228GP.

Posted on Apr 22, 2010

  • 8457 Answers

SOURCE: Have a Sony 32" Trinitron TV manufactured in 1997.

Try website like Remotes.com to buy an a exact remote or a colse capatible one.

Posted on Sep 17, 2010

gopakumarg43
  • 76140 Answers

SOURCE: Dear Sir, I'm Bangladeshi Tv Techanician, Sony tv

Hello

Before replacing the STR, have you checked all the components related to it? When STR burns out some of the nearby components, such as zener diodes and other resistors will also get damaged. You just replace the components, especially, zener diodes, in case it does not show any fault, replace it. Connect a 100W filament type bulb in seris with the power supply, and switch on the set. This will reduce the power concumton at the begining, and we can check its heat effect also, after all are ok we can connect directly. Check the smoothing capacitor at the secondary 130VDC. Replace it also. If you need furthermore assistance, feel free to contact me through Fixya. I'm an Indian, residing at Trivandrum, the capital city of Kerala State.

Posted on Dec 11, 2010

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Tv won't stay on it shuts off as soon as I turn it on and now there is a blinking light on the front and it's blinking 7 times


Most Sony's usually always have bad regulator ics. Depending on your model, could be a mcz3001 or str ic or mxoa ic. Check for 160v across the main capacitor for 160v to see if your power supply is working. Do not use chassis ground. Use the ground on the cap.

Oct 22, 2011 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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Describe your FD Trinitron WEGA KV-21CL10 21" TV Problem my problem is the value of pf pin number 1 & 2 for str 6267


Sir I think there is a missing part in the part number of the str can you give me the complete part number thanks.

Sep 21, 2011 | Sony FD Trinitron WEGA KV-21CL10 21" TV

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I DON KNOW THE NUMBER OF TRANSFORMER FROM SONY KV-29X1D TELEVISION CRT, NUMBER OF CHASSI IS BE3D


Every transformer used by Sony has a partnumber stamped on it, especially the larger power transformers. If you locate the number and run it through google, a number of suppliers will pop up.
Help yourself.

Mar 04, 2011 | Televison & Video

3 Answers

No Display, no sound- not working, showing dead. But input Power is ok. Picture tube filamment not getting power. model sony KV-2192M3


Hello
Check the input fuse first. If it is blown, there will be some short inside the power regulator circuit. Usually Sony sets uses STR regulated power supply. You can see this STR, and Ic, screwed onto a heatsink. Replace it with a same type and number. Before replacing the STR, check the diodes used in that section for damage, mainlu zener diodes. They might get shorted along the blowing of the STR. Check that section throughly before resoldering the new STR.
If any further assistance you needs, get me through Fixya. Ok.

Nov 27, 2010 | Sony FD Trinitron WEGA KV-21CL10 21" TV

1 Answer

We have no picture or sound. The sttandby light blinks 7 times then a pause and blinks 7 more times. it keeps repeating this. This is a Sony Trintron TV


Hello
Seven blinkings of stanbylight in Sony sets denotes a High-Voltage shutown problem. Not means the high line voltage, but the fault inside the tv itself. You haven't mentioned about the model number of your TV, yet I'm going to describe you considering this as a standard Sony problem.
The fault is mainly due to the internal power supply regulator section in your TV. It is now supplying voltage more than normal that it is meant for, as a result the EHT [Extra High Tension] voltage to the final anode of the picture tube goes higher than normal, and the microcomputer Ic inside your Tv detects this voltage difference and giving you the fault symptom in 7 continous blinks. That Ic is so programmed such, it will blink with certain times according to the fault comes inside, and helps us to locate the faulty section without opening the TV.
As I said above the fault in your TV lies on the power regulation section. You just open your TV and locate that section, which can be easly located as the main power just goes to that portion, and there will be a regulator normally Sony uses STR***** type IC regulators, which will be screwed onto a metal heatsink to radiate heat from it while it works. These will heat up to 80 degree C, while working, and the heat generated by this ic can cause loose solderings on its legs. You resolder its leg solderings, and suspected solderings around it, by applying a little more solder. In most cases this will resolve the problem. Ok.

Nov 13, 2010 | Sony Televison & Video

1 Answer

In my tv fuse is blowing off immediately


Hello
If fuse blows off immediately, i means that there is a short circuit occured in your telivision. This can mainly due to some diodes or regulators inside your tv. An overvoltage, spikes, ie [sudden high rise and go low], in the supply votage in your home, could damage power supply regulator components inside your tv.
All Sony Tvs has high accuracy power regulating systems inside. It is an onboard assembly, usually take 1/4th of the area of the TV. In older Sony TVs, this section was built in with use of transistors of different types. But your tv is not so old, so its power supply system is built with an STR, an Ic meant only for power regulations. Normally it willb numbered STR S6707, STR S6703 etc; according th the working voltage of the main board, and screen size of the TV.
This STR may get shorted due to power fluctuations, or any other reasons. A I mentioned above this is an Ic look like small squuare biscut of about an inch in square, and will be black in colour.
The rectified main power supply is given to it via an SMPS transformer [Swiched Mode Transformer], and the Ic will swictch it on and off at the rate of sbout 25KHz or more, and this transformeres secondary voltage is used to power up the other part of the ciiruit board.
If the fuse is blowing as soon as the set is switched on, this Ic will be faulty [Shorted inside]. If you put an another fuse, it also will blow up due to short. It is not good to play with power supply system by doing this as it may harm to other components also.
You have done it I thinks. Here in India, we gets 220VAC as home power supply. Sony TVs used here have a fuse rateing of 250V 3.5Amps. If your household supply system voltage is also this you must put only this rated fuse. If it is 110 or 120VAC, the fuse rating may differ; and will go upto 6 to7 Amps. More than this rated fuse should not be used.
You just do one thing. Just open the back cover of the TV, locate the power regulator section, and chech whether any main rectifier diodes for leak. There may four of them. In some sony Tvs, rectifier stalks are used. Check it for leak. If thery are all good, measure the resistance across the main filter capacitor with a multimeter set in Ohms range. If the STR said above is short, the meter will give full scale deflection. Unsoder the STR and pick it out after loosing its fixing screws to the heat sink. Again check the resistance accross the main filter capacitor. It must sho a low deflection or no deflection at all. Never replace the STR with a new one as there may be some other faulty components in that section. Usually when STR fails, there are some Zener diodes, Wire wound resistor etc will also gets shrted. If you replce the STR before checking them for fault, the STR you puts in will get shorted as you swich on the set. It will take just 1/100 part of a second.
So check all the components related with power regulator system, and then only repace the regulator. Caution: Keep chlidren away from you while you open the tv. Never touch any part of the circuit board while power supply is there. Plug out from the wall socket each time you touch the printed circuit board. As your Tv screen size is 32", an approximate of 25KVDC [15,000VDC], will be present at the first anode of the picture tube while it is working. It is too dagerous to contact.
If you haven't through knoledge, skill and patience, never try to repair it. If you knows to follow its schematic digram, buy one book and follow the circuit.
Keep an adult beside you as you try to repair your set, as a precaution.
If you have any doubt, report to Fixya, they will give me alert. Ok

Oct 20, 2010 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

Fd trintron won't turn on standby flashes 6 times I have done a hard reset and it worked for a couple of times and is gone again


There are some IC's in the power supply that are going bad. This is a pretty complicated repair. You may want to have a repair shop check it out for you. Thanks

Nov 01, 2009 | Sony FD Trinitron WEGA KV-34HS420 34" TV

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