Dicas Reparação
Modelo - Chassis V36
Pesquisa: V36 Enviar Dica Resolvida
Resultados 45
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV36XBR200 AA-2H | arcing | KV36XBR200 Unit has an intermittent arc over that will shut down the television. | The best way to tell if the arcing is related to the HV lead which may be breaking down is to use a high voltage probe. Connect the ground to the CRT ground and run the tip of the high voltage probe over all high voltage connections & wires. If an arc is drawn to the probe tip this would mean that a break down in the insulation has occurred. This test revealed a break down in the High voltage connection at the High Voltage anode button. The silicone sealant did not seal between the HV button and HV cup. Cleaning the area around the anode button, replacing the anode cap and resealing the connection with high voltage silicone sealant. | Muller |
| Sony | KV36FV1 AA2H | GEOMETRY | KV36FV1 serial . Unit has shoulder roll off on the screen. | Gave tech bulletin #387 for the yoke upgrade | Muller |
| Sony | KV36FV1 AA-2 | VERTICAL SWEEP | KV36FV1 Unit has insufficient vertical sweep and vertical foldover at the bottom of the screen. | Suggest the tech try to replace the Charge pump diode and pump up capacitor D561 & C565. This did not correct the symptom. But it was found while moving the wires around the yoke connector the symptom changed slightly. But when tugging on the wiring going into the deflection yoke the tech found a significant change in the vertical deflection scan. There isn't a schematic for the yoke assembly but a small connector inside the yoke housing where the 3 controls were mounted. The connector is called P16.It was not soldered very well. It had thin solder across the land to the pin but what looks like pin oxidation it from making a good electrical connection. Resoldering the connection returned the set to | Muller |
| Sony | KV36FS10 AA-2 | System control | Unit will turn on but not have any raster until the channel is selected. The LED in front flashes indefinitely until the channel is selected. After a channel is selected the set will run fine the rest of the day. The unit has high voltage, filaments, & vertical sweep during the no raster condition. | After first turning on the set the cathodes of the CRT are measured with an oscilloscope. An interesting fact that after the set is turned on there are no visible IK pulses on any of the CRT cathodes. IK pulses only appear when the channel is addressed with the remote or the Channel up down command on the television. Initialization of the EEPROM did not correct the symptom. No incorrect values found in the alignment parameters. Only by elimination was the trouble found to be in the EEPROM. | Muller |
| Sony | KV35V36 AA-2 | Shut down | KV35V36 serial 9024090 Unit has an intermittent shut down that only occurs after two or three days. When shut down occurs, the LED in front is Blinking and raster disappears but sound is OK. When flexing, heating, or freezing the main circuit board the problem can never be recreated. | Tech needs to order the CRT. Since we are not able to confirm any trouble with chassis The CRT is nearly out of Warranty. It is recommended that since we are unable to determine any chassis fault the problem must be due to CRT arc over. Note after 4 weeks of normal operation the CRT seems to have corrected the symptom. | Muller |
| Sony | KV36V15 AA-2 | PURITY | KV36FV15 serial # 9026985 Unit has in the lower left corner the tube has a sever convergence and purity error. | No magnets appear to have moved into a position that would this effect. It cannot be adjusted out. It has been determined the CRT needs replacement. | Muller |
| Sony | KV35V36 AA-2 | PIP | KV35V36 Unit has no control over PIP channels. The PIP only displays the main channel. It will not change on its own | I asked the tech go through the ID codes for this unit and see if they were the correct value. ID3was 10 ID5 was143 & ID6was 0. These were wrong. The ID codes are supposed to be from ID0 ~ ID7 = 25, 55, 47, 10, 155, 6, 0. After resetting the ID codes the set operated the PIP correctly but still needed to set the PIP chroma phase | Muller |
| Sony | KV36FS12 AA-2 | NoiseY video | This television had sever noise resembling black & white random lines of varying lengths. No discernable picture. Noise is in the tuner and video and modes. | Checking the video at the input of the comb filter IC3504(2) on the rear I/O circuit board. The video is perfect. However the Luminance out IC3504(9)is broken into pseudo square waves that are random in size and shapes. This indicated the Combfilter was not working. Further checking discovered the FSC IC3504(37), which is a 3.58mhz carrier was reduced to a 60hx pulses. At CN271(15) we found the FSC signal normal. Problem was an open trace between the connector CN274(15) and C3578 located inside the combfilter shield located at coordinates C2 on the UY board. | Muller |
| Sony | KV26V36 AA-2 | NO RASTER | KV26V36 Unit has no raster. Further checking we found the set had High voltage and vertical sweep. Just no filaments. | I had tech check the must haves. The only thing that was not present was Heater voltage. I had the tech remove the socket and measure the total resistance of the filament source by measuring the H1 & H2 terminal pins on the ""C"" board. It was open. H1 & H2 at the flyback were less than 1 ohm. Checking CN503 found the black wire was loose and fell out of the connector when unplugged from the main board. Connector wire would stay in place if reseated. Pushing connector back in place corrected the trouble. "" | Muller |
| Sony | KV36FV75 AA-2 | NO AUDIO | KV36FV75. Unit has no audio. But also has no OSD stating ""Main"" or ""Stereo"" Main picture is fine. "" | ID codes are 0=25, 1=55, 2=47 3= 0 , 4= 155, 5 =143, 6 =6, 7=0 which is correct. Initializing the EEPOM did not correct the trouble. Tech will be returning with a Manual | Muller |
| Sony | KV36FV1 AA-2 | HORIZONTAL SWEEP | KV36FV1 serial 9023663 Unit has a sever over scan condition for horizontal sweep. Tech did not measure any voltages in the pin amp circuit | Tech needs to check on L511, Q512, C513, C511, D502 & D504. One or more of these are shorted. | Muller |
| Sony | KV36FV1 AA-2 | horizontal | Unit has a severe over scan condition for horizontal sweep. Tech did not measure any voltages in the pin amp circuit. | Tech needs to check on L511, Q512, C513, C511, D502 & D504. One or more of these are shorted. | Muller |
| Sony | KV35V36 AA-2 | horizontal | Unit has a insufficient horizontal sweep. The sweep is reduced by 10 to 15% on the left side and 2 ~ 5% on the right. | When going into the tech set up parameters and adjusting the HSIZ value the sweep will change to full sweep. Monitoring the voltage at the Collector of @Q512 the voltage will vary from 27 volts HSIZ set to 22. When HSIZ is set to 48 Q512(C) will drop to 16 volts. The set will have full sweep but it has a slight foldover condition on the right side of picture. It is recommended the tech replace the retrace capacitors C511, & C513 and the Yokes"" capacitors C518, & "" | Muller |
| Sony | KV36FV1 AA-2 | GEOMETRY | KV36FV1 serial 9032273 Tech needs yoke modification for the yoke upgrade. | Gave tech bulletin 387R2 relating to the shoulder roll off | Muller |
| Sony | KV36FV1 AA-2 | focus | KV36FV1 serial 9046442 Unit has poor focus on left and right side of picture | The set has a dynamic focus error. Tech needs to see if the Dynamic focus circuitry is running correctly. Also before any hardware is tested the parameters of HAMP and DCSF should be adjusted to see if the dynamic focus is effected. When adjusting these parameters the values get the best focus when each is mixed out to 60. The focus becomes poor 2 inches from the left side of the screen and 5 inches from the right side of the screen. | Muller |