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.
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.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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Your TV is in the protection mode. First, locate the horizontal output transistor. This is found very close to, or next to, the horizontal output transformer (also known as the flyback). The flyback should be on an aluminum heat sink, or on the side of the metal chassis. Disconnect or unsolder two of the three legs of the transistor. Measure it with your meter, or plug in the set with the light bulb attached across the fuse. 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. 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..
Can you please inform us the model and brand of this unit..if the unit wont power on this can be a problem with the power supply or the power adapter ...
First, locate the horizontal output transistor. This is found very close to, or next to, the horizontal output transformer (also known as the flyback). The flyback should be on an aluminum heat sink, or on the side of the metal chassis. Disconnect or unsolder two of the three legs of the transistor. Measure it with your meter, or plug in the set with the light bulb attached across the fuse. 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. 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..
First, locate the horizontal output transistor. This is found very close to, or next to, the horizontal output transformer (also known as the flyback). The flyback should be on an aluminum heat sink, or on the side of the metal chassis. Disconnect or unsolder two of the three legs of the transistor. Measure it with your meter, or plug in the set with the light bulb attached across the fuse. 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. 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..
Yes there is a fuse inside the unit,just open your unit and locate the fuse.If you aready change the fuse still not working then the problem go deeper.First, locate the horizontal output transistor. This is found very close to, or next to, the horizontal output transformer (also known as the flyback). The flyback should be on an aluminum heat sink, or on the side of the metal chassis. Disconnect or unsolder two of the three legs of the transistor. Measure it with your meter, or plug in the set with the light bulb attached across the fuse. 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. 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. This TV monitor is small enough to take to a repair shop find a good one.You probably have to pay $50 - $75 dollars up..Feel free to ask and post whatever the result of your troubleshooting..
First, locate the horizontal output transistor. This is found very
close to, or next to, the horizontal output transformer (also known as
the flyback). The flyback should be on an aluminum heat sink, or on the
side of the metal chassis. Disconnect or unsolder two of the three legs
of the transistor. Measure it with your meter, or plug in the set with
the light bulb attached across the fuse. 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. 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..
First, locate the horizontal output transistor. This is found very
close to, or next to, the horizontal output transformer (also known as
the flyback). The flyback should be on an aluminum heat sink, or on the
side of the metal chassis. Disconnect or unsolder two of the three legs
of the transistor. Measure it with your meter, or plug in the set with
the light bulb attached across the fuse. 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. 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..
Sounds like a common problem where the Horizontal Output Transistor
shorts due to heat, loading by a partially shorted flyback or yoke or
old dried heat sink compound. or could be convergance amp ic's
sony has problem with bad picture tubes as well as flyback transformers .if you have shorted hori output then replace it if set shorts it out again your looking at bad flyback transformer as well as maybe leaky tube.
Usually, in those Sony sets, a crack developes on a small transformer in the horizontal drive circuit, which causes the horizontal output transistor to short. This immediately shorts out the switching transistors in the power supply and blows the Sony 0.1 ohm resistor fuse. A shorted flyback (high voltage) transformer will also have the same result. The power supply does NOT need to be replaced. The parts should be replaced, the flyback checked and the board resoldered by a qualified tech familiar with Sony sets.
compound.
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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