Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
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Sony | KV2084R | PICTURE BLANKED, REPLACE R552 | Picture blanked. Hi V OK. Noticed negative voltage on baseof Q305, which the schematic calls out as positive. | ||
Sony | SLHF450 | S/M CORRECTION: AUDIO PB OUTPUT LEVEL ADJUSTMENT | Page 200, section 5-5-2-3 refers to VR901 on the AF22 boardfor PB output level adjustment. The pot is actually on board VA14. -HQ COMMENTS: A service bulletin will be issued. | ||
Sony | KX2501 | SHUTDOWN/BLANKING PROBLEM, REPLACED HVR BLOCK | Set shut down intermittly. | ||
Sony | KPR41DS1 | SERVICE MANUAL ERROR, Q-8206, U2-18 | Service manual schematic shows the base of Q8206 connected to5V. This will not allow Q8206 to switch (see attached). Also U2-18 Pin 1should show a ground connected which it does not. If no ground werepresent the external audio switch would not functio | ||
Sony | CCDV3 | NO CAMERA E/E OR RECORD PICTURE | No camera picture in EE or RECORD modes. | ||
Sony | CCDV9 | NO SERVO LOCK IN PLAYBACK | Noise bars riding up monitor screen during playback. Foundbandpass filters of 16K & 47K would intmtly show correct waveforms andimmediately servo would stabilize. Q251 and supportive circuitry whichacts as low pass filter extracting ATF from playback R | ||
Sony | STRAV27 | POP IN SPEAKERS WHEN IN TUNER MODE | When the unit was in tuner mode, there would be a pop heard onthe speakers every so often. All other modes were OK. | ||
Sony | XR6100 | NO AUDIO ON TAPE FUNCTION | Tape deck mute switch is engaged all the time. Please notethe other serial numbers (39354, 38860, 11732, 20270, 38576, 32027, 39025,37745, 49545, 33402, 37112). | ||
Sony | ITA500 | PREMATURE SHUT OFF OF ICM | |||
Sony | ITA500 | EXCESSIVE TAKE-UP TORQUE | Extreme wow and flutter on message playback. The take-uptorque is approx. 50g/cm (should be about 5-10g/cm). On this particularunit, it occurred on the ICM side. However, I have also seen this problemoccur on the OGM side. It appears there is some oi | ||
Sony | PVM1910 | NO VIDEO ON LINE A OR B | No video displayed when inserting video through J002 orJ006. Found break in etch right at both connectors. Unusual for both tobe broken, only explanation they broke while inserting or removing theBNC connectors. | ||
Sony | KV20XBR | NO RASTER | Set would shut down after 3 or 4 seconds. Brought up setwith variac, found Hi-V protect voltage at the base of Q503 too high.Found transistor leaky. | ||
Sony | KV27HFR | SHUTDOWN, REPLACE IC-681 | Intermittent shutdown after 15 to 20 minutes. | ||
Sony | XR6100 | AUDIO MUTED ON TAPE FUNCTION | Tape deck mute switch is engaged all the time. | ||
Sony | STRAV460 | EVERY SEGMENT OF THE DISPLAY LIGHTS AT ONCE | Customer complained of intermittently every segment in displaywould light up at turn on. No functions would work. Turning on/off wouldclear it up. |