Sony Repair Tips
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Results: 20100
Results: 20100
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| SONY |
CCDV110
|
No drum servo | Drum would start up and immediately shut down. found c520shorted - (30Ω). voltages were not far from spec around problem area. | ||
| SONY |
KV25XBR
|
Intermittent volume goes high | Trouble symptom was very intermittent, i.e., volume would govery high, brightness level would decrease about 2/3 and no display. in-spection reealed no dc voltage at ic-101 when problem occured. i foundrosin connection on l-113 which prevented dc from | ||
| SONY |
SL300
|
Picture distortion | Strange distortion in picture. check rf waveform you can seeone head missing. | ||
| SONY |
D77
|
Noise between songs with battery pack | Noise between songs only with battery pack. | ||
| SONY |
D10
|
Fuse in negative side of dc input | Some d-10 units have a fuse in the negative side of dc input.it is not shown on any supplements. -hq comments: tokyo added the fuse to prevent the regulator transistors(q401 and q403) from burning. they are currently working on a supplement. | ||
| SONY |
KV2726R
|
Audio buzz on cable, replace if block | Servicer reports the set has an audio buzz on cable channel 4only. they are unable to pickup ch 4 on an antenna. | ||
| SONY |
AVU360
|
Cannot receive uhf stations | Dealer reports there is not any way to change from catv touhf. the service manual does not give any info and there is not aninstruction manual on premises. | ||
| SONY |
CCDV8AFU
|
Noise in pix during playback | Once unit warmed up, noise bars would drift through pix. atfpilot at pin 1 of ic106 would disappear when problem was observed. hadcorrect wave form at q114 but not at the collector of q121. small spikeswere not present at this point. | ||
| SONY |
KV2670R
|
Intermittently tuning drifted off, leaky c-202 | Intermittently tuning would drift off. found that when we usea tuner sub that the aft pins out of vif chip would change. pin 6 of ic20would go approx. 5vdc. this was what was driving the tuner off station.pin 5 was 0v but pin 7 which should be 3.6vdc | ||
| SONY |
STRVX350
|
No am or fm | No am or fm. display readout was ok and unit would scan butit would not lock in on signal. no variation of vc voltage was noted.vc voltage was short .3vdc and would not vary. dc voltage on pin 10, ic20was locked on 4.7vdc. i was able to locate defect | ||
| SONY |
CDP7F
|
Cd will not play unless unit is upside down | Unit would play if upside down. in normal position you can hear clicking noise during focus search. | ||
| SONY |
SLHF860D
|
Clock gaining 20 min/hr | Clock gaining 20 min/hr. | ||
| SONY |
SLHF860D
|
Picture breakup during picture in picture mode | During picture in picture, inserted picture was broken into 5 horizontal lines across entire bottom of screen. | ||
| SONY |
CFDD77
|
Service manual correction | P40 of manual shows connection to ov ground for fe, te adj.should really be connected to 2.5v reference, cn721, pin 10. -hq comments: you are correct. the ground input of the oscilloscopeshould be connected to vref., pin 10 of cn721. we will inform to | ||
| SONY |
ITK300
|
Sidetone/voice output low in amplitude | Sidetone and voice output low in amplitude. receiver sectionok, tone dialing ok. found r116 unsoldered at pin 15 ic101 speech networkchip. | ||
| SONY |
CDP110
|
Spindle motor runs backwards | Spindle motor runs backwards. unit was serviced at a dealerwhere the spindle motor had been replaced. | ||
| SONY |
KV2782R
|
Intermittent shut down and/or horz freq drift, replace r-515 | Horz. freq. would drift off. a service call made to re-adjusthorz. freq. control. customer then complained unit would shut down sometime and horz. would drift. many parts were tried before r515 was con-firmed. solution: replace open resistor (r515). | ||
| SONY |
ITA550
|
Unit locks up | Unit would take 1 message then lock up. | ||
| SONY |
TCU270
|
Capstan motor is always energized | This unit maintains capstan motor running for as long as thesystem power is activated regardless if the cassette deck is in the oper-ating mode. this causes excessive wear on the mechanical components. | ||
| SONY |
KV1972R
|
What is function of di0de/not listed on diagram | Diode is mounted between pin 4 and 7 of ic105. diode notlisted in manual. -hq comments: the diode itself is as follows: rd 13eb2, part number8-719-100-68. if servicer replaces the ic105/upd6250c, this diode is nolonger necessary. (the diode is just |