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Sony Repair Tips




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Search: sony
Results: 20086
Make Model Symptom Problem Solution By
SONY HCD-EX8
In protection Ic 690, 9v regulator Replace the same! Note: only works with the cooler (fan) VITALTEC
SONY KV29FS100
BA5D 		When you turn on the power, it activates the relay but tsound is no high, without +b R630 (330k) power supply Check r's 627, 629 and 630 of 330k. joaomvjr
SONY KLV32S300A
Does not work (power supply shorted) Blown fuse and q 6103 (fet) 2sk3683- replace with 2sk2996, as the original is not on the market. It worked beautifully. Adilson - Maceió/AL.
SONY KV20EXR20
Horizontal sweep Kv20exr20 insufficient horizontal sweep ic603 is the wrong ic for this chassis. On the g"" board all the b+ on the supply. ic503 is defective sec135. "" Muller
SONY KP61XBR200
RA4 		Raster Kp61xbr200. unit has a symptom unit has an intermittent symptom of loosing raster every hour or so. when the raster disappears the stand by led in front blinks on and off. in about 15 minutes or so the set will Replace cr cg cb, and a boards under the sayes Muller
SONY KP53XBR200
RA4 		Osd Kp53xbr200. unit will not loose the on screen display data that shows the program material, length of time, type or program, rating, ? etc. This is the xds (extended data services) information that is broadcast in the vbi. it is selected of the customer has the xds feature turned on. we could not turn this unit off. suggest tech to enter the tech menu and initialize the eprom by pressing ""8"" the ""enter"". this corrected the symptom. "" Muller
SONY KP61XBR200
RA4 		No raster Kp61xbr200. no raster but has sound. unit will operate for several days then loose raster. during the episode the timer led will blink as it does during the warm up sequence The led is blinking 5 times. this is an indication of a ik error. since it is so intermittent i suggested that he could replace the a, cb, cg, & cr boards. these are covered by the s.a.y.s program. it is possible that a tube is causing this trouble but we cannot confirm it unless we see the symptom. the replacement of the boards is an attempt to eliminate 4 possibilities of the ik generating and sensing circuit. Muller
SONY KP53XBR200
RA4 		Lines Kp53xbr200 serial 9008681. unit has a faint vertical line in the picture lines in the picture. only shows up on tuner video. Unit needs kit t-9986-0653 per bulletin # csv-1 #402. kit consists of 9 resistors, 4 capacitors, a 22 inch wire connector, a wire tie, and instructions. Muller
SONY KP61XBR200
RA4 		Crt Unit has all three crt burned from running at the store. unit was sold as a open box item with the tubes already burned. once all the tubes were installed the tech could not set the green. green. during the setup of the green crt the unit gave an error 80. This error code is an indication the green skew is off. tsound are no electrical adjustments for green skew. what need to be moved is the mechanical rotation of the deflection yoke. the auto convergence is an very unforgiving if the yoke has any tilt at all. Muller
SONY KP53V80
RA3 		Shutdown Kp53v80 serial 9001172 unit will turn on and a picture will appear but it will periodically arc and shut down. Blue crt defective. arcing in neck. visual arcing. Muller
SONY KP53V80
RA3 		Rster Kp53v80 after the set is turned on the raster will appear as a bright screen with video. the brightness is intense and lacks contrast. the osd menu is also missing. This phenomena is caused by one of the ik bμFfers on the crt driver boards. the condition should be treated by replacing all ik bμFfers and replacing the spark gaps the following transistors are the ik bμFfers q733{cg board} q764{cb board} & q706{cr board). they are hidden by a heat sink for the video output transistor. tech needs to order the spark gaps for each crt module and replace the defective ik bμFfer. ik bμFfer number is 8-729-200-17 and the spark gap is 1-517-729-31 locations for spark gaps are Muller
SONY KV53V80
RA3 		Retrace lines Kv53v80 serial 9001186. after the set is turned on the raster will appear as a bright red screen with video. Pulling the red crt socket and turning on the set we measured the collector of q706 the red ik bμFfer. it should have been ""0"" but it was 9 volts. replaced q7056 and did the factory upgrade on the all the crt modules corrected the problem.tech replaced the spark gaps for each crt module and replaced the defective ik bμFfer. ik bμFfer number is 8-729-200-17. the spark gap pn# 1-517-729-31 with locations of sg702, sg732, sg762. "" Muller
SONY KP53V80
RA3 		Raster Kp53v80 after the set is turned on the raster will appear as a bright screen with video. the brightness is intense and lacks contrast. the osd menu is also missing. This phenomena is caused by one of the ik bμFfers on the crt driver boards. the condition should be treated by replacing all ik bμFfers and replacing the spark gaps the following transistors are the ik bμFfers q733{cg board} q764{cb board} & q706{cr board). they are hidden by a heat sink for the video output transistor. tech needs to order the spark gaps for each crt module and replace the defective ik bμFfer. ik bμFfer number is 8-729-200-17 and the spark gap is 1-517-729-31 locations for spark gaps are Muller
SONY KP46C70
RA3 		Raster Kp46c70 serial 9001847 once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. tsound are no retrace lines. the set does not have any on screen display, sound ok. Q733 defective Muller
SONY KP53V80
RA3 		Pixelate Kp53v80 unit will run fine for hours but color hues will changes and at times and the color will pixelate. problem does not show up if the color is turned all the way down. the pip is not effected the pip color is normal.. Since the trouble does not affect the b&w portion of the picture it was ruled out any failure with the ik circuitry. also the pip was unaffected so we ruled out the pip module or the jungle ic. the only logical answer was the 3d comb filter since the video is digitized and the resulted chroma and luminance converted back to analog again. this is about the only place wsound the chroma can become pixilated. however the tech will probably need to replace the ""a"" board. the set is less than 30 days old and the ""a"" board can be replaced under warranty. the set is covered under the says program. unit had a defective ""a"" board "" Muller
SONY KP53V80
RA3 		Osd Kv53v80 after the set is turned on the raster will appear as a bright screen with video. the brightness is intense and lacks contrast. the osd menu is also missing Monitor the cathodes of each crt at the instant of turn on. all cathodes were close to 186 volts. but as soon as the raster appeared the voltage dropped to 89 volts. this indicates the crt's are in saturation. during this test the 200 volt power supply was still is running nearly 200 vdc.the ik lines are causing this problem. measuring the ik line at the ""cg"" board at cn731(1) we measured 5 volts dc as soon as we turned on the set. after the picture appeared the voltage did not replace. (note: on a working set this voltage should be near zero volts as long as tsound is ""0"" beam current. each cathode had a normal ik pulse of 38 volts. the ik bμFfers on each board are very hard to get to so another plan was develped to check these devices. the following transistors are the ik bμFfers q733{cg board} q764{cb board} & q706{cr board). they are hidden by a heat sink for the video output transistor. tech needs to order the spark gaps for each crt module and replace the defective ik bμFfer. "" Muller
SONY KP61S70
RA3 		High voltage Kp61s70 serial 9005015. unit is not developing high voltage but has sound. no secondary voltages from main power supply Recommend that the tech order the ""g"" board. unable to provide part number. "" Muller
SONY KP61S70
RA3 		Convergence Kp61s70 serial 9007325 unit is 1 day old. the customer claimed the set popped then the set lost convergence control for blue horizontal lines. this mean the vertical sub deflection circuit is malfunctioning On this chassis all of the sub deflection yokes are protected by fuse links. the fuse for the blue vertical sub deflection is ps1506 an it's open. it is a 2 amp device. part # 1-533-59311 Muller
SONY KP53V80
RA3 		Bright raster Kv53v80 serial 9008877 after the set is turned on the raster will appear as a bright screen with video. but the brightness is intense. tech replaced the ""a"" board which did not cure the symptom. the set does not have any osd either "" Monitor the cathodes of each crt at the instant of turn on. all cathodes were close to 186 volts. but as soon as the raster appeared the voltage dropped to 89 volts. this indicates the crt's are in saturation. during this test the 200 volt power supply was still is running nearly 200 vdc.the ik feedback lines are causing this problem. measuring the ik line at the ""cg"" board at cn731(1) we measured 5 volts dc as soon as we turned on the set. after the picture appeared the voltage did not replace. (note: on a working set this voltage should be near zero volts as long as tsound is ""0"" beam current. each cathode had a normal ik pulse of 38 volts. the ik bμFfers on each board are very hard to get to so another plan was develped to check these devices. the following transistors are the ik bμFfers q733{cg board} q764{cb board} & q706{cr board). they are hidden by a heat sink for the video output transistor. this unit had a "" Muller
SONY KP53V80
RA3 		Bright raster Kp53v80 serial 9007644 once the set is turned on the raster will appear as a bright screen with video but the brightness is intense. tsound are no retrace lines. the set does not have any on screen display, sound ok. Defective q764 is leaky Muller