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Sony Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SONYKV1545RS
Incorrect remote operation,replaced ic101Pressing on/off or picture up buttons on remote transmitterwould not affect receiver.
SONYKPR4600
Shut down, replaced blue crtImmediate shut down at turn on. could hear arcing from unit.with back removed could see blue crt arcing.
SONYKP7225
Poor convergencePoor convergence with some controls such as tilt and key stonenear limit of their range.
SONYKP5040
Poor focus, adjusted electrical and mech. focusDistributors complain of poor focus on kp-5040. a littleblurry was traced to the acrylic lenses, which are transmitting a slighthalo around well defined objects. noticeable around the blue cross hatchbars, which causes them to appear wider than the oth
SONYKP5040
Wrong part number, r818Resistor r818 on e board is shown as a 3.6Ω resistor onservice manual schematics. it should be 3.6 kΩ. parts list in rear ofmanual is correct.
SONYVTX1000R
No pictureDead tuner 6.8v line is 0v. found ross at the 6.8v regulatoropen.
SONYTV123
Intermittent picture distortionThis unit very intermittently pulled from the sides and/ordisappeared. no loss of horiz. sync. occurred.
SONYKV8100
On/off switch would not workCust. is using kv8100 with a vhs machine on a boat. both tvand vhs are on 12vdc. the kv8100 will not shut off with on/off switch. -hq comments: we can try to go around that by insertive rc separator(10 kΩ in parallel with 0.01u) into the cable conne
SONYKV5020
Narrow pictureNarrow pix - all three crt's were narrow pix remained ingood convergence. looked like the low voltage power supply was weak.
SONYKV2602
Picture distortion, replaced c508At turn on full vertical sweep then gradual loss from top andbottom until after 5 minutes picture would be approx. half size.
SONYKV2601
No color, replaced 3.58mhz crystalNo color.
SONYKV2141R
Set locks on ch2, shorted q2201Display says channel 2, no matter which channel selected,tuning ok.
SONYKV1948R
Ch 14 would not lock, adj t202 and t203Ch. 14 would not lock up on a cable co. using the hrc cablesystem, all other channels operate properly.
SONYKV1947R
Picture distortion, replace ic501Total loss of vertical sync.
SONYKV1945RS
No color, replaced bpt, t301No color.
SONYKV1945RS
No uhf q008 shortedWould not receive uhf channels.
SONYKV1945RS
Incorrect tuning, replaced x003No channel indicator (blank), no tuning of signal. voltageson ic001 and ic002 were all wrong. servicer had changed both chips andchecked the clock freq. of ic001 cl1 with a counter, 400khz. when clockwas finally checked with a scope pp v was only 0.5v
SONYKV1923
No picture, has sound, replaced c516No picture, just sound.
SONYKV1922
Picture noiseThree inches wide bar at right side of screen top of bottomonly on hbo cable channel and only at customer's home only on thisparticular unit, other units tried and work fine. servicer blamingcable co. found 150pf capacitor between q512 collector and gr
SONYKV1915
Picture distortionOne and half inches of top of picture is black.