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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV2648R
No picture, replaced q602 and q603 It first appeared as if q602 shorted and that replacementwould solve the problem. however after about one hour it would shortout again. q603 was discovered to have e-b leakage.
SONY KV2647R
No operation, replace ic-502 Set would not come on, no sound or picture. found ic501loading down vcc on chip to 2vdc, should be 12.5vdc.
SONY KV2647R
Incorrect tuning, resolder r-085 When unit turned on, it would come on with different channel.
SONY KV2647R
Faint lines on the screen Faint lines on left side of picture. these are vertical linesspaced about one inch apart. they vary in thickness from one eighth inchto nothing as they approach the center of the screen. -hq comments: slight ringing (vertical bars) visible on low brig
SONY KV2145R
No picture, resolder c534 Set would blow the horiz. output, at low voltage. i noticedh. frequency doubled. found c534 not grounded.
SONY KV1948R
Picture distortion (slight tear), normal A slight horiz. band/pull under conditions of varying beamcurrent. scene changes or large areas of light next to dark. this bend/pull is very slight and i have observed the same symptom on otherkv-1948r models. we have given careful attention to the b
SONY KV1947R
Poor remote operation, replaced ic101 Intermittent (2-3 weeks) operation in remote and push-buttonfailure.
SONY KV1947R
No vhf, replace ic002 Set had uhf operation but no vhf operation. no vc was presenton tuner. all switching voltages were correct and verified against akv-1948r. applying external dc to vc line tuned all stations.
SONY KX1901
Lighter raster on the top These units had a light area across the top of the screen.the first 12 to 15 scan lines after vertical blanking were lighter thanthe remainder of the raster. it looks like the units had a poor blacklevel just after vert. blanking. also these units have
SONY KV1222R
Incorrect mechanical operation The door assy will not stay closed due to the fact that thedoor retainer which is a plastic material, will not engage the catch onthe door securely in order to keep the door closed. this condition isprevalent on at least a dozen sets or more at the acco
SONY KV1221R
Shut down, replaced r001 After warm-up (or after simply plugging in and not turningon for 1/2 hour or so), the unit could not be powered up. if unit ison, it will then not turn off. remote or manual same. ic001 was bad andthe relay drive transistor as originally suspected.
SONY KV1215
Dead, replaced l309 While i was servicing the unit using an external dc powersupply, i noticed the absence of audio. inspection revealed no 18vbeing supplied to the sc board. resistance of 18v line to groundmeasured about 1kΩ, should be about 180Ω. i then found l
SONY KV1207
Dead 12v line was being grounded by r221 lead touching ground.
SONY VTX1000R
Incorrect tuning operation The customer complaint was the memory worked fine with theexception that it would not remember more than one channel beginning withthe number 3. it would remember any channel beginning with 3 but notmore than one.
SONY KX1901
Noise lines on the screen There were several lines in the raster, about 2 inches down from the top, looked like retrace lines. these were present only whenthe set was cold after warm up the lines would disappear.
SONY KV2649R
Fm station received when operating in uhf mode, ic002 Fm music is received when a uhf station is selected. vl pinat tuner remains at +11 volts regardless of station selected.
SONY KV2647R
Snowy picture vhf, replaced vhf tuner When switching to any low band vhf channel, the picturewould become snowy. readjusting rf agc control would eliminate theproblem. then, changing channels again, the pix would be snowy again.this cycle could be repeated over and over again.
SONY KV2647R
Picture distortion, replace c-508 The symptom is that the raster will erratically demonstrateshort vertical sweep. it is very difficult to isolate the problem to anyparticular component due to symptom being intermittent.
SONY KV2645RS
Jail bars, replaced c539 Jailbars faint under normal viewing conditions. problembecomes obvious when camera fades to gray, or picture and brightnesscontrols are placed at minimum. jailbars are then observed in graduallylightening shades of gray from left to right across the cr
SONY KV2645RS
No last channel memory, replaced leaky d-26 on md board Last station memory is lost when the set is turned off.