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Sony Repair Tips




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Search: sony
Results: 20073
Make Model Symptom Problem Solution By
SONY ALL VID
New video heads - all models Trying to find a new set of video heads with good head balancein biii mode. more than 50 percent of new heads are not good. it usuallytakes about three pairs before one is sufficiently balanced.
SONY KP7200
Audio output transistors Audio output transistors get defective every couple of months.replacing the (q) board does not help.
SONY D10
Noise on standing position or up-side-down position A disc touches on a md cover when a unit plays on standingposition or up-side-down position. because the md chassis does not mountflat, the problem occurs in the unit with new improved insulators-springinside insulator.
SONY CCDV8AFU
Dots on tape with outdoor shoot only Leaves dots on tape like water spots on imager (outdoor only).problem also occured with unit serial no. 24500.
SONY KP5000
Audio output transistors Audio output transistors get defective every couple of months.replacing the (q) board does not help.
SONY XR75
Two different tape heads available Service manual shows p/n 1-543-181-00 head. actual part inunit was 1-543-181-12. is two (2) different heads used in differentseries? -hq comments: xr-75 has two different tape heads available. pleaseidentify the head type before ordering. we will is
SONY XR787R
Connectors are mislabled Mislabled wire colors to cn901, on connector pc board,page 27.this was annoying because i was repairing the burned out wiring when cus-tomer incorrectly installed unit. there are similar errors on cn901 inmanuals for xr-780, xr-747r and xr-740. -hq com
SONY F10A
Bad picture (out of focus) Blury picture, low voltage (focus) of d802 320v (should be420v). low voltage (brt) of d854 20v (should be 41v) on the crt filament5vdc (should be 40v or above).
SONY SPP100
Phone line goes dead intermittently Customer complains that periodically the spp-100 shuts histelephone line down. he has to unplug the spp-100 from the telephone jackfor a few minutes and then the phone line will reactivate. he has threeregular touchtone phones on this line which do not
SONY CDP302
Unit will not read toc When disc is in machine and you enter play, unit would focussearch and then stop no play at all. it would play if you would movesled device in with your finger. we found c-218 leaky, which would not a-llow unit to locate inner portion of disc in order
SONY CCDV8AFU
Intermittent shutdown Vtr would either go off or turn on intermittently. this tran-sistor was leaky, causing the flip-flop to change state at random.
SONY CCDV8AFU
Distorted sound record or p.b. Playback of prerecorded tape or tape recorded on unit was gar-bled. checked pin 13 of ic401 and vco frequency was approx. 1mhz. rv402would adjust freq. from .9mhz to 1.29mhz. found bad connection on r434.pin 46, ic401, remained at 2.13vdc all the time
SONY KV25VXR
Time activated operation malfunction When the unit goes into record pause mode, unit shuts itselfoff and memory gets wiped out. found d602/5.6v zener) on (d) board de-fective causing no vertical pulse to pll contr. p4/ic103 and negativepulse at p58/ic2004 (res. out) at the rec. pause insta
SONY PSLX355
Schematic error On pages 6 and 7 power and ground are indicated reverse towhat they should be on power input connector. hq comments: thank you for your information. we informed tokyo of thisproblem, however, the service manual was correct.
SONY CDP255
Improper chucking arm supplied When replacing chucking arm on cdp-255, the part listed in thes/m is different than original part. specifically the magnet assy wasnot matched to the spindle so the chucking arm would not properly clampthe disc.
SONY ITA650
Speakerphone problem Outgoing audio loud and quiet, only when speakerphone is used.
SONY CDP707ESD
No play (keep turning the disc) 1) fop sled lock lever was out of position and prevented fopfrom getting into inner position. 2) no part number for this lock lever.
SONY WMF46
Motor hum (electrical) Above replacement motor produces a low level (hum) audiblein headphones. used all parts that came with motor - screws, cushions,etc. large amplitude pulse can be seen on scope on black lead wire ofmotor. hum goes away when (pause) is activated. -hq c
SONY VTX1100R
Display on monitor (kx) has a rippling effect The vtx1100r tuner came in dead. the line fuse f201 (1.6a)was blown. the fuse was replaced and the unit worked. the picture on thekx-1901a monitor was good however, the display had a rippling effect.
SONY KV4000
Intermittent vhf tuning The vhf high channels could not be selected intermittently.we found switch, s-901, to have developed a resistance of about 400Ω.this condition did not allow a complete (low) state in the band-selectflip-flop, causing set to skip to uhf from vhf low.