Dicas Reparação




Modelo - Chassis


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(Chassis)
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SonySL2300
POWER LIGHT STAYS ON Pushing of timer record button would cause power light tostay on and the tape would eject.
SonyCFS3000
NO SOUND ON BOTH CHANNELS Output to headphone is okay, but no output to speakers.I found 3 units with the same problem.
SonySL2700
CAPSTAN RUNNING TOO FAST The capstan was running too fast on this unit. All otherfunctions were OK. We found the FG1 input to the servo IC to be very low.The problem was caused by incorrect bias at the FG amp/IC306 P9, we foundC340 to be leaky. -HQ COMMENTS: We received info.
SonySL2700
CLOGGING VIDEO HEADS Lately we have been seeing a large number of units comingthrough with dirty video heads. Sometimes the symptom is in the form of aslight vertical jitter. Other times it is a traditional snowy picture.Cleaning resolves the problem for only a short time.
SonySL2710
NO BETA HIFI PLAYBACK This unit had no Beta Hi-Fi playback. We found Q002 to beopen on the AF-2 board (9V PB switch). Also changed was C002 as itappeared to be somewhat leaky.
SonyKX2501
JAIL BARS, REPLACED C1527 Picture was slightly reduced in brightness and there werenumerous dark vertical bars across the raster, about one inch in width.I suspected some sort of oscillation in the horiz. output circuit,possibly caused by poor capacitor filter action. Scoping TP
SonyCFS5000
NO SOUND ON TAPE PLAYBACK No sound on tape playback. Other functions OK. AMS seems towork. In PLAY (with cassette in) AMS solenoid occasionally kicks.
SonyWMF8
BUZZING NOISE Buzzing noise through head phones in tape mode.
SonyKV2670R
NO BRIGHTNESS CONTROL, LEAKY D-301 Unable to adjust brightness. Found ABL clamp diode D301reading 100 ohms both directions (forward and reverse).
SonyCDP101
SLED GOES TO ONE END WITH POWER APPLIED With disc inserted for 2 to 3 seconds, it would eject disc.
SonyTCFX510R
NO RECORD This unit came in with no record function. REC LED did notlight up because Pin 35 of IC601 stayed low in REC mode. Since this unitis old type, I ordered IC601 with the part #8-755-640-71. However the ICI received from NPC was a new type CX-564-072.
SonySLHF300
DRIFTING RF SWITCHING POSITION This unit shows the same problem as SL-2300/2400 series. RFswitching in picture of T/N #B0060 modifies to correct the problem in2300/2400 series. Do we have a similar solution for SL-HF300? Drum drivecircuit Q15-Q20 in SL-HF300 appears to be very simi
SonyKV1911
RINGING ON LEFT SIDE OF SCREEN Ringing on left side of screen.
SonyKV1961
VERTICAL JITTER ONLY ON CH 10 OFF THE AIR Vertical jitter. Only on ch. 10 off the air. Worked normalon cable. Transmitter was approx. 10 miles from dealer.
SonyHVA220
AC ADAPTER NO LONGER AVAILABLE Customer purchased HVC-1000, AC adapter, CMA-100. Video is OKbut audio was distorted. 800 # suggested him to purchase HVA-220.


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Não arrisque reparar equipamentos com tensões elevadas se não tiver conhecimentos técnicos para o fazer em segurança.

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