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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV1543R
Neon does not function, see below No function of neon bulb (nl15) on remote or manual commands.all other functions work. found only 75vac at junction of r018 and r017to ground.
SONY KP5000
Will not stop channel search, replaced c159 In the program mode, set would not stop searching when astation was tuned in. m-15 on the m board had the required horizontalpulse. m-9 on the m board had the sync pulse. the positive and negativeaft voltages on pins 1 and 2 of m-8 appear to be normal
SONY KV2643R
Weak picture, replaced leaky c208 Set had weak video with sync problem.
SONY KV2643R
No tuning, replaced ic033, cx804 After pressing channel button j none of remaining channelscan be manually selected until remote selection is used, at least once.
SONY KV2643R
Picture blanking, repaired cracked foil This unit would rhythmically go from good picture to excessbrightness with retrace lines then to black screen. this would happen atabout a 7 second interval. this would happen continually as long as setwas turned on. the collector voltage on q704, 705
SONY KV1543R
Channel search doesn't stop,replaced parts below All indications were that set would tune properly but wouldovershoot each channel. result was unstable sync and in general poorpicture quality. pin 10, ic201 (cx555) aft was reading approx. 9v vs2.5v. at pin 2, ic033 (cx804) was reading approx. 10v.
SONY KV1543R
No remote function, replaced ic001 Remote does not work, manual ok.
SONY KV9300
No control of brightness No control of brightness, excessive brightness even withscreens and drives down, voltages ok in abl drive circuits. also incolor.
SONY KV8000
Incorrect brightness operation with retrace lines Excessive brightness and retrace tube cathode voltages low,10v.
SONY KV2643R
No sound or picture, replaced ic2002 No sound or picture. could not program any channels norwould the set change address positions.
SONY KV2643R
Incorrect channel indication The channel indicator neon lamps are polarized and will notlight when soldered in backwards. the lamps are not marked as to whichway they are to be soldered in.
SONY KV2101
Poor v linearity, r517 increased in value Poor vertical linearity top 1/3 of picture slightlycompressed. vertical size control to end of range. waveform at base ofq501, blanking pulse 5 msec, it should be 1.2 msec.
SONY KV1714
Dead Dead set, 1.6 amp fuse blown, horizontal out transistorshorted, b+ regulator shorted.
SONY KV1543R
Intermittent shut down, replaced r532 The set would intermittently shut down.
SONY KV1201
No color, resoldered r356 No color. checked cw signal at the collector of q307 whichwas not there. signal was present at the base. i checked the dcvoltage - collector was 18v, that told me that the transistor was notconducting. base voltage was normal (3v) emitter was 2.8v.
SONY KP5000
Green picture, replaced c323 Severe bright green screen no control.
SONY KP5000
Shut down, replaced c5112 Immediate shut down - no high voltage.
SONY KP5000
Dead, bushing on vert output was carbonized Unit cannot be turned on. when the power switch is activated,unit comes on for 2 seconds and goes off. checked and f6103 was foundopen. 120v line was loaded. when i checked resistance from 120v b+ toground, i read 150Ω both ways. ga-9 (plug) pin
SONY FX310
No audio No audio - any function. acts like bad function switchbecause if applied additional pressure on knob volume works - releaseknob - no audio.
SONY TPSL2
Defective motor Tape player would not run. motor seemed to draw excesscurrent. a check of the motor revealed the fg winding was shorted to themain winding.