☰

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: 20072
Make Model Symptom Problem Solution By
SONY KV2781R
Poor purity, replace crt Pink in upper right hand corner. could not adjust purityin upper right hand corner, tried using magnets, no help. i hit the crtwith my hand and could see shift in purity.
SONY SLHFR70
No channels programming Will not remember programmed channels on the tuner.
SONY TCU270
Interface info Please send us interface info. -hq comments: the tcu-270 is tape deck in the access 301 a/v entertain-ment system. tcu-270s 13 pin connector only connects to the avu-270.avu-270 supplies ac power using the 13 pin connector. also, all of thesignals are
SONY CDP302
No disc rotation - abnormal focus search During focus search objective lens goes too far to eitherextreme. fok 0. at c206 broken pcb trace.
SONY CFD5
Transport goes back and forth Intermittently, the transport goes back and forth. at times,unit will play fine for 5-6 hrs then problem occurs. -hq comments: please refer to tape recorder s/b #146r and try new fwdand nr levers.
SONY CDP502ES
Oscillation present at efm Cannot adjust pll-rf due to the fact there is oscillationpresent at efm. the oscillation looks similar to the efm signal but itis much higher in frequency. ic604, ic601, d601, t701 and complete rfpcb all were replaced. problem still exists. -hq comme
SONY SL2400
No motion The machine came in first time with open pinch solenoid. ireplaced it, also replaced driving transistors. now came as a recall,pinch and brake solenoids are open. replaced again, also driving tran-sistors. intermittently the machine changes the funct
SONY CCDV8AFU
Vertical bars on playback Vertical bars on playback caused by creases on the tape.customer thinks the unit is damaging his tapes. verified creases on allsize tapes.
SONY WMF10II
Wheel block assy, motor (substitution) This part subs to x-3315-357-1 (wm-f10) but the shaft in thewheel block is too long for the wm-f10ii motor. -hq comments: refer to t/n letter a0053. use p/n a-3313-205-a for themotor wheel block assembly. however, the new motor wheel is notcompatible
SONY STRAV760
No sircs out signal No output at sircs out connector.
SONY KV2670R
Purity off, repaired degausing coil Minor purity problem in the upper left corner. hand degauss-ing did not clear problem and could not be adjusted out. the purity wasso far off that the red gun controlled the green phosphor.
SONY KPR4110
Q-22 circuit in schematic is wrong, please correct your sm Page 77 of schematic shows collector of q22 going through r40to b+. it should go through r40 to base of q23. -hq comments: please correct your service manual using thisinformation.
SONY WMF75
Function switch After short period of usage, function switch becomes loose.
SONY SLHFR30
Playback picture distorted When scoping rf envelope, one head missing. servicer hasalready changed the heads. traced rf (a and b) to pins 17 and 18. bothheads were present. check pg pulse at pin 9, it was okay. no output atpin 14 for one head.
SONY KV1954R
Pix in on sides and horizontal, removed tape Pix in on sides and horizontal. double sided sticky tapeholding c509 on the bottom of the board is affixed to the bottom of ic501across pins 19, 20, 21, 22, 23, 24.
SONY EVS700U
No operation Unit will go into eject mode but accept no other functions.if in eject mode already with the cassette door open, the compartment willnot close unless power is removed. system control ic101 revealed very lowdc, about 1.4vdc, at pins 12 and 15. no regula
SONY BMC220
Very distorted picture, no color Recorded picture was distorted with no color. tried perform-ing horiz. balance but waveform on tp702 was low in amplitude. voltage onpin 12 of ic701 was low (82v). input to switch (pin 13) was also wrong.base of q704 was -1.9v.
SONY TCM5000EV
Pause mode not working correctly On this unit and on a previous repair, i found that thespring (ref. #357) was broken. when the pause button is depressed, themotor will stop after a short time as s902 is not being turned on.
SONY CDP70
Shorted laser diode The laser would not come on. we found the laser diode to beshorted. also this unit was similar to the circuit found in supplementi (nov. 1985) with the exception of rv201 and r212 being omitted. wewill install these parts and adjust the laser level.
SONY SLHF500
Tuner does not work The tuner would not work nor would the channels display.we found ic301/pin 16 on the tm-52 board to be approx. 1.8 volts. thiswas caused by a leaky q305.