Question about Sony FD Trinitron WEGA KV-36FS120 36" TV

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SONY KV36FS70 I HAVE A PROBLEM WITH MY SONY KV36FS70 THE HORIZONTAL TRANSISTOR WENT OFF I AND I REPLACE IT BUT IT STILL DOES NOT COME SWITCH. THE STAND BY LIGHT TWICE AND GO OFF AGAIN

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Kindly check voltages at Collector pin of H-Out transistor, If not....Usualy, there is fuseable resistor for safty in power line to H-Out transistor. Its value approx 1 ohms 2 watts rating. Please find it and replace it.

Posted on Jul 20, 2008

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Will not come on. light blinks 6 times


Hello
Six blinks denotes the absense of horizontal sweep. Check the horizontal output transistor, whcih can be located very near to the LOT [Line Output Transformer]; for short. If it is shorted, LOT must be suspected. Replace the line output transistor with a new one, and switch ON the tv for a short period of time, say 6 seconds or so, and check the heat of the replaced transistor. If it overheats within this time, be sure that LOT is damaged; shorted inside; and should be replaced with same type and number. If a digital multimeter which can measure frequency is available, take the frequency at the collector of the horizontal driver transistor. It should come around 15525Hz. If not replace the jungle IC. OK.

Jun 19, 2011 | Sony FD Trinitron KV-32HV600 32" TV

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My sony trinitron 32" tv just went black and the


Hello

Six blinks of standby light in Sony TVs denotes the absence of horizontal oscillation.

No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
In most cases the Ic is foud defective. anyway check its soldering points for any loose contact, or bad solerings. Check the line drive transformer, a very little transformer soldered directly to the main printed circuit board, very close to the horizontal output transistor. Check its primary winidngs for open. If it gets open no horizontal drive signal will be present at the base of the horizontal output transitor, that also may the cause of horizontal stop.

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

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My Sony Trinitron stand by/timer light is on and will let me put tv on but only stays on for a few seconds . Model #KV27S66 Oct 99


Your TV has an overload due to some faulty components inside it. This type of fault is usually noted with overheating of horizontal output transistor connected to LOT of the TV. This may be due to LOT fault, or fault to the transistor itself. When it overheats, it put a short between supply rail, and the power supply regulator system inside your TV will detect that short and will shut down automaticaly. Please note; if the TV works after some time, say after 15 or 20 minutes; and again shuts down after working for a short period, and the cycle repeats, surely there is a winding short inside LOT, which cannot be detected by normal multimeter measurments. If it is so, replace LOT and the horizontal output transistor at the same time.

Oct 14, 2010 | Sony Televison & Video

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SONY KP-61V90 tv will not power on, red light in front,


Its 2 times blink error code that shows +B volt supply (+135 volts) is shorted, most probably horizontal output transistor is shorted, replace it.
If you are good in soldering parts in circuit board then take out horizontal transistor, check it, found shorted then replace it with same number.

Horizontal output Transistor Q502 number is 2SD2578 and available in Part Store for $10
Let me know for further query, if any.
Thanks.

Nov 18, 2009 | Sony Televison & Video

1 Answer

Sony Trinitron 2002 Model # KV-32HS500 stand by light blinks 7 times, pauses and repeats. No picture or sound.


7 times blinks shows problem in Horizontal Deflection stage of tv and possible defective part can be Horizontal Output Transistor or Fly back Transformer.
If your are qualified tech person then go ahead to check above parts.

Sep 17, 2008 | Sony Televison & Video

1 Answer

Television


replace the horizontal transistor near the EHT.

Jul 19, 2008 | Mag Innovision InnoVision XJ 717 Monitor

1 Answer

Sony KV-28HX15U


Most likely the flyback assembly, and or the horizontal output transistor failed. There is also a possiblity of some other faults that are putting the power supply in to the protect mode.

If there is a scan failure, it is possible that there is also some damage in the power supply.

The set will have to be serviced by a TV service tech.

Jerry G.

Apr 13, 2008 | Sony FD Trinitron WEGA KD-36FS130 36" TV

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Went off


replace the horizontal transistor

Sep 16, 2007 | RCA 32V420T 32" TV

1 Answer

Tv flashing stand by / timer


Sony tv's have a myriad of problems that prohibit the High Voltage from activating. The flashing red light indicates the standby circuits are functioning correctly. You problem lies in the H>V section.A shorted horizontal output transistor or even poor connections on the horizontal drive transformer could cause this problem. To properly diagonose this problem,it must go to a service facility that is familiar with Sony servicing. Usually Sony repairs are not cheap. It is imperative that only Sony original parts are used. Scrivitron

Jun 20, 2007 | Sony FD Trinitron WEGA KV-32FS320 32" TV

1 Answer

Panasonic model TX-29GF10X, went on stand by , and not Switching ON again, what is the majore cause?? or what does the TV need to restart again


Your problem im afraid could be one of several things. Power supply problems,sweep supply,horizontal output transistor,standby power supply. The best thing for you to do , if your not a tech, take the set into a reair depot as these are solid state sets and have no user replaceable parts inside. Good Luck

Aug 28, 2006 | Sony KV-32S26 32" TV

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