Sony TV Repair: Common Faults and Solutions.


AIWA
BEKO
CCE
CINERAL
DAEWOO
FUNAI
GRADIENTE
GRUNDIG
HISENSE
HITACHI
ITT
JVC
LG
MITSUBISHI
PANASONIC
PHILCO
PHILIPS
PIONEER
RCA
SAMSUNG
SANYO
SHARP
SONY
THOMSON
TOSHIBA
VESTEL


Search: Sony
Results: 20067

Sony Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
SONYKV1515
No soundFailure of sound section of ic201 due to static discharge inlow humidity environments. have scrapped volume slider decorative buttonto remove excess silver plating. no help. -hq comments: we are sending you a countermeasure proposal involvingapplicati
SONYKV1512
Picture distortionSlight fold-over in center of screen. c406 apparently driedout over the years. located off emitter of abl q4091.
SONYVTX1000R
No power onNo power-on switching using front panel switch (s802) orremote. customer claimed power would come on intermittently and thatother functions such as video switching, antenna switching would workerratically (this was not verified). when s802 is depressed
SONYKX2501
No sync, replaced q317 and q318 both should be 2sa1175Unit had no vertical nor horizontal sync. according toservice manual, q317 sync sep-1 should be 2sc2785 and q318 sync sep-2,should be 2sa1175.
SONYKV9000
Vertical distortion without videoVertical collapse under no signal condition. set appeared tohave proper vertical waveforms when receiving off the air broadcast, butwhen no station present only a thin line, this indicated oscillatorfailure or no self-sustaining ability.
SONYKV5000
No operation with acSet would not work on ac. all dc checks which we could thinkwere performed. power supply simply would not start. found waveform 27would appear for just an instant and die away. transformer t606 checkedgood so c611 must be culprit.
SONYKV3000R
Door jammingLeft side door was found to be inoperative when inspected bydealer. found mounting bolts loose on motor assembly. motor ass'ydrive gear could not engage in door drive track. bold heads had pulledinto soft wood due to shipping and handling jolt.
SONYKV2648R
No picture, replaced h out transistorReceiver had no b+ voltages. all voltages and waveforms atprimary side of t602, f board, were all right. resistance check of 135vlines was 200Ω to ground. horizontal output transistor was shorted.
SONYKV2647R
No vertical sync during changing ch., wrong value r580Vertical sync loss when changing channels, ok when scenefades out before a commercial.
SONYKV2645RS
Low brightness, replaced r751Low brightness, like weak crt.
SONYKV2645RS
Channel would not lock, adj t205 aft coilWould not lock on to cable channel #14. cable companyrunning mid-band channels 1.2mhz to 1.9mhz below accepted centerfrequency.
SONYKV2645RS
Incorrect picture position, add capUnable to center picture horizontal. picture off to the leftby 1/2 inch with tap plug into right position. servicer changed yoke,diodes d519, d518 and resistors around center area. i changed severalcapacitors. customer has had this problem from the f
SONYKV1946R
Picture distortion, r605 openInsufficient width and no color, b+ 110v not regulating,r605 open.
SONYKV1945RS
Audio hum, replaced ic102Hum in sound, follows volume up/down. scoped output ofic102, looks like 60hz hum.
SONYKV1515
Incorrect tuning operationCould tune channels 2 to 9 only. vc on this unit cannot gobeyond 15v and band selector switch have no effect, station is tunedregardless of switch position. this problem was caused by a leakys075 causing a high (3.2v) on q104.
SONYKV1515
Picture distortionIntermittent vertical collapse, found c508 leaky.
SONYKV1515
No low vhfThis unit could tune only h. vhf and uhf band. found q103collector to emitter leaky.
SONYKV1515
Incorrect tuning operationUnable to tune position #1 to the correct channel on any ofthe 3 band selections. all other positions function normally. foundthat moving band switch at position 13 while in position 1 viewing modewould cause deteriorating effect on position 1 tuning,
SONYKV1515
No low vhfSet would not tune above channel 2, traced to leaky vc drivertransistor.
SONYKV1217
Vertical foldover, replaced c524Vertical foldover with blanking spot on right upper corner andjittery picture. found c524 installed backwards during manufacturing.