Question about Sony FD Trinitron WEGA KV-30XBR910 30" TV

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SONY KV-DZ29M61 horizontal deflection problem

Two standby blinks, transistor 2sc5931 shorted. Didn't get it, used a substitute. Started working but the picture is horizontally stretched almost 1.5 times. Is the substitute is creating this problem, any right value substitute you can suggest. Thank you.

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  • raremilind Dec 01, 2008

    Thank you for your response. Actually transistor 2sc5931 is used in this tv but it's a panasonic manufactured part, so I thought may be I can use something closer to it by some other manufacturer. What do you think if I some how managed to get the exact part ( which is not easily available in my part of the world ) this problem will be rectified. If yes then I will have to work harder to get it Thank you.

  • Anonymous Mar 17, 2014

    I need a substitute for cream of tartar

  • Anonymous Mar 26, 2014

    can I substitute buttermilk for something else ?

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  • Sony Master
  • 5,138 Answers

You cannot use sub parts on sony use sony parts only. Same with hori output transistors. USE SONY PARTS ONLY.

Posted on Dec 01, 2008

  • ladywinn
    ladywinn Dec 02, 2008

    Call Electronix parts 1-800-223-3205 they might have it.OR Look on line sony parts------------ www.electronix.com

  • ladywinn
    ladywinn Dec 07, 2008

    If I am right sony use s a NTE 2324 hori output Transitor.

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ladywinn
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SOURCE: SONY KV-DZ29M61 horizontal deflection problem

Use Sony Parts only all others will not work or hold up.

Posted on Dec 01, 2008

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Why does my daewoo tv standby led blinks and no picture?


Faulty components from the secondary circuit section,, Try to check the Horizontal output transistor.

Aug 16, 2014 | Televison & Video

1 Answer

My tv turns off when I am watching tv


The number of blinks from the standby LED on the front indicate specific error codes and possible fault conditions.

(from an article on understanding Sony TV error codes):

Many of the later model Sony TV's have a built in self-diagnosis function. If the timer/standby indicator is blinking, this could be an indication of a problem with the unit. The diagnostic blinking will occur automatically with no action required by you to engage it.

The timing of the blinking you see would be as follows: two to nine blinks, (depending on the fault), about a third of a second apart, then a pause for 3 seconds, then the two to nine blinks about a third of a second apart again.

Here is a list of the problems that might have occurred indicated by the number of blinks.

* Unit is dead, No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open).

* Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.

* One blink - not used for the self-diagnosis

* Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.

* Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672.

* Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505

* Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the C board, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly.

* Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.

* Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.

* Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some projection models of Sony TV sets, this code means that T8005 (flyback transformer), or the associative components in the high voltage circuits are defective on the D board.

* Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive).

* Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

If this is a CRT TV, it could prove expensive in terms of repair, as if it is shutting off and the standby LED is blinking, it means the set has entered protection mode, due to one or more components shorting or going leaky. Horizontal output transistor and flyback transformer are the most likely culprits to cause the set to shut off while you are watching it so check those first along with any suspicious looking components in the power supply (bulging or crooked electrolytic capacitors, diodes, resistors that look discoloured, etc.) and measure what you can if you have access to a digital and analogue multimeter.

If you have some basic experience and knowledge of electronics, and you understand the potential risks involved, you can have a go at fixing it yourself. Unless you really know what you're doing, and have the confidence to match, I do not recommend this practice.

You can however, do some simple visual checks of your set which don't require any special tools. Start by checking the power supply and working your way toward the horizontal stage; and make sure when replacing the flyback transformer, that the correct part number is ordered and fitted for your model - using the wrong type can either be underpowered, resulting in a dull picture, or no picture at all, or the set simply won't start up.

The same applies to the horizontal output transistor - this is important - it must be the correct rating for your set, along with the correct pin type and orientation (you can check these details on the original parts in your set as a guide to suitable replacements).

Use the wrong type and you will do more damage. Horizontal output transistors have a tendency to go off with an almighty BANG as do chopper transistors in power supplies if they are replaced with underrated or cheap equivalents, so that's something to keep in mind when replacing this and unless you get the manufacturer recommended part, the reliability factor can be anywhere from excellent to nil.

It's also a good idea to check the tuning capacitors on the collector circuit of the horizontal output transistor, as these may have dropped value over time, and replace (with correct type and voltage rating) to prevent risk of expensive/dangerous pyrotechnics and irreparable damage in the future.

When repairing the horizontal stage in any CRT TV, and such involves replacement of the flyback transformer, the horizontal output transistor and tuning capacitors must also be replaced at the same time.

When repairing the switchmode power supply in any CRT TV, all electrolytic capacitors must be replaced at once, and any leaky or open circuit diodes, transistors, and resistors must be checked and replaced accordingly.

*Don't forget to touch up any dodgy solder joints on the chassis just to be sure after replacing the flyback transformer, horizontal output transistor, and tuning caps. Most bad solder joints would exist around input sockets, the function buttons and the ON/OFF switch on the front so check these as well.

Hopefully your set will work a little better after that. If not, put it aside and consider a newer TV with extended warranty (covering you against any defects, faults, and so on).

The best bet is to obtain some quotes if necessary on the likely costs to fix this first and then weigh up the pros and cons of those - you can then choose to go ahead and get it repaired properly by a qualified service tecnhician (if you don't want to fix it yourself) or cut your losses and buy a new set.

Feb 11, 2013 | Sony FD Trinitron WEGA KV-34HS420 34" TV

2 Answers

I turn the power on, but it keeps shutting off. The standby light is pulsing two times if that helps any. Thanks


Hello
Two blinks of standby light in Sony sets denotes that there is some short circuit inside the circuit board. It could be with a shorted capacitor, shorted horizontal output transistor or defective Line Output Trnasformer otherwise known as [LOT]. To determine it you have to open the TV. You must have a concept of soldering and more confidence. LOT described above can be located on the mainboard itself. One wire from it goes to the top side of the picture tube's final anode, and seem to be sticked to it with a rubber ******. That is [LOT]. Very near to that LOT you can locate the horozontal output transistor stated above, screwed onto a metal heatsink. You just resolder it out from the board, and check it for collector to emitter leak. It is best to replace it with a new one of same type and number. Insist on same type and number, since it is a critical component. After replacing it, just switch on the TV for a few seconds, say four or five, and switch it off, unplug it from wall socket and feel the heat of that trasistor with bare fingers. If it overheats, it is a sure symptom of LOT fault. You have to replace the LOT also with same type and number. Before replacing the above said components, you just resolder the transistor said above, and just switch on the set without it. If the sytandby LED lights for the same number of time, there may be any shorted capacitor in the main secondary supply rail; usually 130VDC, LOT power supply. There is a EHT boosting capacitor fitted very near to the transistor said above, at about 470Pf; ceramic or so. There is a chance that this capacitor may get shorted. Anyway, your TVs secondary power supply rail has a short. Two blinks of standby light denotes Over Current Protection [OCP]. It is a self diaganosis process going inside the the TV, and every Sony set has the same fuction. Ok
Take every precaution before you open the TV. Mind that you are going to work with an electrical equipment, which has as high as 26,000VDC points are inside it. Keep chlidren away from you while you are working. Not even allow them to come nearby you, and let an adult beside you as a precautionary measure. Ok

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1 Answer

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

2 Answers

My 36' RCA TV JUST QUIT WORKING. TURNED ON POWER


A shorted horizontal output transistor or shorted flyback. If the flyback is shorted replace also its HOT.

Apr 05, 2009 | RCA F36650 36" TV

1 Answer

My KV-36HS500 won't turn on it sounds like it wants to,but no picture,and standby light flashes 7 times,pauses and flashes 7 times again


The 7 blinks indicate that the horizontal deflection has stopped. This can be because the horizontal output transistor has shorted (common) or other defecive parts. If you are familiar with working inside of sets where potentially dangerous high voltages exist and can solder, let me know and additional details and instructions will be provided.

Dan

Mar 19, 2009 | Sony FD Trinitron WEGA KV-36HS500 36" TV

1 Answer

SONY KV-DZ29M61 horizontal deflection problem


Use Sony Parts only all others will not work or hold up.

Dec 01, 2008 | Sony Televison & Video

2 Answers

No Picture, Sound Fine


Hey John, How many times does the light blink? No blinks - Problem in the standby power section. Might check fuse, R607, Q601, IC601, R612 and VDR601 (should show open). Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective. One blink - not used for the self-diagnosis Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits. Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672. Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505 Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. Check video out, Q705, 732, 761 and other components on the Cboard, also check Q218, 219, 220 on the A board. In addition, unit could be in IK blanking, try turning up screen slightly. Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately. Check C515 & 516 and the jungle IC, IC206. Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits. Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code. Check IC406 audio amp, PS401, and 402. On some newer models of Sony TV sets, this code means that T8005 is defective on the D board. Nine blinks - Replace D 6116 and D 6301 on the "G" board, do not resolder as this will fix the problem temporary. Or Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing, then change the switching regulator on the "G" board or check connections. Make sure the regulator is -12 or -13 (negitive). Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board. I suggest you do a hard reset. Unplug the power cord for 4 hours. Then plug it back in and check it. If it works, great. It not, cost of repair for this is usually around $150 - $250 plus the house call.

Jun 26, 2007 | Sony KV-27S36 27" TV

1 Answer

Sony blinking standby light


This is Sony's way of telling you that there is a short in you set.Probably the horizontal deflection circuit.(Horizontal output transistor shorted??). Also any other short. You need to take it to a techincian and have it checked out. It would be wise to get an estimate! Stargazer

Feb 05, 2007 | Sony KV-32CS70 32" TV

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