Question about Sony FD Trinitron WEGA KV-36HS500 36" TV

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Sony KV36HS500 Flyback Shorts

Do you have any idea why the flyback replacement part from Sony shorts out twice in a row when it worked for three days first attempt then only several hours on second attempt. Seems to blow on power up for some reason even if adjust RV8002 down from 31kv to 29.5 second anode on second attempt. Sony parts number 1-453-437-11 implies is correct replacement but suffix is different from original FBT of NX-6020//M to NX-6020//M3J4 new part and box lable shows KV-32HX700 Malaysia. I can't find any defective devices on D-board and replaced HOT just for kickers. I feel the schematics service manual have the right part number but someone at Sony has substituted the wrong part from a smaller 32" screen tv and the diodes in the doubler of the FBT are shorting. Can you shed some light as Sony parts sending a D-board they say works in both models 32"-36" likely with same FBT suffix and needless to say it's strating to get expensive.

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  • BP2008 May 28, 2008

    The new D-Board came with the FBT sufffix NX6020//M just like the orginal D-Board FBT. The new FBT's Sony sent as replacement part NX6020//M3J4 shorted out nearly right away. So far this new D-Board is working ok after several days so I do suspect a wrong part repalcement is going around out there.

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I HAVE A SONY CRT TV, BUT THE TUBE IS BROKEN. i BELIEVED. THE TV IS
Sony KV36HS500

Posted on May 13, 2010

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If the transistor is shorted, or the light bulb doesn’t glow bright anymore, replace the transistor and plug back in. If the light bulb glows bright again, you must replace both the flyback and horizontal output transistor simultaneously. In some cases this will fix the set, but sometimes there are multiple problems with a set.
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Hope this may help;

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Hope this may help;

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DON'T FORGET TO RATE

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1 Answer

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If the transistor is shorted, or the light bulb doesn’t glow bright anymore, replace the transistor and plug back in. If the light bulb glows bright again, you must replace both the flyback and horizontal output transistor simultaneously. In some cases this will fix the set, but sometimes there are multiple problems with a set.
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Hope this may help;

Regards,
VOTIT

DON'T FORGET TO RATE

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1 Answer

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Go to where the flyback is, and start measuring the diodes and capacitors on the flyback itself. If you don't find any shorts there, it could be a shorted vertical output IC, a shorted sound IC, a shorted disc capacitor in the Hi Voltage/sweep circuit, or in rare cases, a shorted capacitor or tuner.Feel free to ask and post whatever the result of your troubleshooting..


Hope this may help;

Regards,
VOTIT

DON'T FORGET TO RATE

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1 Answer

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