☰

Sony Repair Tips




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


Search: sony
Results: 20100
Make Model Symptom Problem Solution By
SONY KV1946R
Shut down, l503 broken off Set would go into shut-down mode immediately at turn on.i verified horizontal oscillator and b+ circuits were operating properly.i then noticed that the coil l503 was broken off of the connection onpc board.
SONY KV1923
Tuning shifts Channels would program correctly. if set was on channel 2and moved to channel 8 then back to channel 2, channel 2 would not comein. same with channel 8 when set was returned to this channel. thiswould also happen if the set was turned off and back on.
SONY KV2647R
Shut down with jig, ground hvr This particular unit shut off instantaneously when power wasturned on. it happens only when chassis was attached to the jig. most ofthe time technicians spent useless hours to find out that the ground onthe hvr was missing (usually a screw grounds the
SONY KV2645RS
Pin cushion, add resistor in series with r809 Pincushion correction at top and bottom near the corners isalmost null. -hq comments: to correct the problem place a 15Ω 1w resistor inseries with r809 (100Ω 1w) and readjust pin phase and pin ampcontrols.
SONY KV2643R
No channel lock, replaced c206 Except on low band this unit keeps on scanning stations.ch. 2, 4, 5 could be tuned in but slightly have weak video (slight snow).found c206 leaky causing a drop, at pins 26 and 28 to 1.7 volts insteadof 4.6 volts.
SONY KV1546R
Vert roll, intermittent vert collapse, replaced c508 Set operates fine for 1/2 to one hour then starts to roll,then vertical collapse. found c508 improperly installed (reversepolarity).
SONY KV1217
Picture distortion, see modification below Horiz. centering adjustment will not shift picture far enoughtowards the right. center adjustment only expands the picture. -hq comments: try the following circuit modification. place the horiz.centering r. position. the r1, r2, c1 values shown shoul
SONY KV1207
No channel look Set changes channel by itself usually ending on ch. 13position.
SONY KP5040
Incorrect mechanical function, use of loctite When unit was turned on the mirror door would extend about2/3 of the way out and start clicking. the motor would continue to runand not shut off. disassembly revealed the retaining nut on the driveshaft had worked loose allowing the left hand side door
SONY KV2647R
No picture, open r057 and prescaler, R057 resistor open (mf board). no problem found in reg.circuit. solder splash on feed thru terminal of prescaler.
SONY KV2645RS
Tuning would not lock, replaced s2262 Tv would continuously scan through all channels. foundchannel up button closed.
SONY KV2645R
Dark picture, replaced r-751 Dark picture like weak crt. found r751 changed value.
SONY KV2601
Part number missing Servicer has kv-2601 with spark gap on c board shorted -schematic designation sg. the part number was omitted from the servicemanual of all the above listed models. -hq comments: the spark gap in question is not available as a separatepart. it comes w
SONY KV1945RS
Picture distortion, replaced c544 Severe pincushion problem, pin control has no control. baseof q503 was negative instead of 2v. found signal on base has a lot ofspikes, which could come only from one point, the flyback. c544 was opencausing no filtering.
SONY KV1945R
No picture, replaced shorted q006 and q008 on md board This set had no vc voltage and band selection voltages werewrong at tuner.
SONY KV1945R
Shut down, trimmed r563 This unit intermittently shuts off by itself.
SONY KV1913
Picture distortion These two units came in with high brightness with retracelines. found r721 open.
SONY KV1543R
Intermittent remote operation, replaced c005 Remote commander operative only about 10% of time, mostfunctions completely inoperative. with scope probe at tp 52 m-2 boardabout 5vpp random noise present and remote control signal distortedwhen actuated.
SONY KP5000
Picture distortion, loose screw on hor drive trans. q5104 Intermittent horizontal sweep problem causes sweep to collapseand burn a vertical line in the three picture tubes.
SONY KV2648R
Snow picture, replaced prescaler Picture would go to snow after about 5 minutes after turn-on.set was ok when cold. 12 volt line would drop to 7.5v and voltage atprescaler would drop to 1.5v.