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Sony Repair Tips




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Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV2648R
Gray bar on the screen Gray bar very dark on left side and becoming lighter lookingtoward right side of crt.
SONY KV2647R
Jailbars, poor ground on "s" board Jailbars present on left side of screen more pronounced onthe higher channels. found poor ground on s board opposite the groundingposts from the tuner.
SONY KV2647R
No vertical sweep, replace rv2206 No vertical sweep. voltage at ic501 pin 11 should be 6.3 vdc.actual reading was 2.2 vdc. found vertical hold control had an 8000Ωreading center tap to case at all times.
SONY KV2643R
Vertical line on the picture, remount q701 Vertical line appears in the center of screen on brightscenes. found q701 installed wrong at factory. c was connected to e.b was connected to c and e was connected to b.
SONY KV2602
Picture blanking, adj jerrold cable box, vari-loser When using models with 30p chassis on cable systems thatscramble the pay channels (by removing the sync pulses at the head end andreinserting them thru a converter) the sync is sometimes compressed tooclose to blanking. this apparently reacts with the k
SONY KV1946R
Shut down, replace ic601 Set turns off by itself after 45 minutes.
SONY KV1946R
Sound and picture distortion, replace q051 Set would not go all the way off. when turned off, pix woulddim, sound goes off. found q051 relay drive transistor completelyburned out.
SONY KV1945RS
Intermittent sound, replaced ic202 Unit had very intermittent sound.
SONY KV1945R
Sound pop noise, replaced c226 Sound would pop off and on intermittently.
SONY KV1922
No low vhf No low band vhf-uhf ok. vhf high ok. no negative 6 volts atvhf hi terminal of tuner apply external -6 volts could tune in low band.q102 vhf hi drive had no negative voltage at base troubleshooting found-12v rectifier being loaded.
SONY KV1746R
Intermittent shut down , replaced q901 This set very intermittently shuts down. it could run a weekjust fine.
SONY KP7220
Picture distortion, replaced d5319 Overscan.
SONY KP5040
Incorrect mechanical function When closing mirror assy, motor stops intmtly during first 3or 4 inches of travel. this is more severe if even the slightest pressureis applied in a downward motion on the reflector when motor is running.the plastic pipes tend to jam severely when press
SONY KP5040
Shut down, replaced high voltage block Door would not open. unit would shut down.
SONY KP5000
Out of convergence Green would go in and out of convergence as the green tube wasarcing. also brightness level change would affect size of green pictureproducing misconvergence effect.
SONY KX2501
Intermittent black blobs in pix, replaced t1501 Black blobs intermittently come and go and move around thescreen. the intensity and size can be varied by adjusting the videoinput level or ac input. by observing the waveforms in the horiz.circuit we found varying amounts of distortion at the secondar
SONY KX2501
Volume level changes with pix control, replace ic101 Sound would increase when increasing picture level, decreasewhen lowering picture. adjusting sound control would have similar effecton picture level. mute control would not fully mute sound. pwm signalsfrom up, ic101 pins 2 and 3 were of the same ampl
SONY KV9400
Intermittent color This set was intermittently losing color. found horiz. pulsemissing at pin 20 of ic301. traced problem to c311 which was opening up.
SONY KV9200
Retrace lines Customer objected to three-four vertical retrace lines onlyvisible while watching two channels 9 and 32. lines appeared to sparkleas if they were being modulated with information. scoping verticalblanking pulse, noticed excessive pulse width. working
SONY KV2647R
Black lines on the screen, replace ic501 Solid black line across the screen about 1/2 inch thick,2 inches from the top. very intermittent.