Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
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Sony | |||||
Sony | |||||
Sony | |||||
Sony | CCDF77 | WON'T PLAY, FF, REW - UNIT LOADS, TREADS, DRUM TURNS | The Ever 5 volt from IC-503 is supplying B+ to the modecontrol IC. Capstan B+ and Drum B+ are present, but the 5V from Q-903 ismissing. This is a secondary supply from the DC to DC convertor. Q-903base is biased from IC-901. IC-901 was found to be ba | ||
Sony | SLV575UC | HIGH-PITCH NOISE | The unit makes a high-pitch noise when in Reverse Scan mode. | ||
Sony | D555 | IC-502 HAS FEWER PINS THAN LANDS ON SERVO BOARD | IC-502 is a 12 x 4 flat pack, CXA1272R. Both the actual boardand the diagram on p. 28 of the manual show a 13 x 14 x 13 x 14 layout.Even though they call out only 12 pin numbers on a side. How do we in-stall this part? Which lands does it get connecte | ||
Sony | XVD300 | PICTURE GOES TO PIX ART IN ANY MODE | In any mode the picture looked as though it was constantly inpicture CRT mode. | ||
Sony | STRAV320 | DOES NOT FUNCTION | Unit does not function. | ||
Sony | TCDD3 | PEAK LEVEL METER INDICATION ALWAYS DISPLAYS "OVER" | Peak level meter indication is always over with no input onremote, digital jack or mic/line in. Operating conditions were asfollows: record button Off, record level control set to minimum and notape in loaded. Two units with the same symptom. | ||
Sony | TAAX311 | INCORRECT PART NUMBER, D-957 | Schematic on pp. 20 - 21 shows zener diode D-957 as a UZL-27.Part list on pg. 32 calls for HZS30-1L (P/N 8-719-002-49). | ||
Sony | STRAV1070X | UNIT GOES INTO PROTECTION WITH HIGH VOLUME ON REAR AMP | Setting the rear Amp volume to high causes the Protectioncircuit to activate. I connected 8 Ohm dummy loads to the rear output andthe output clips unsymmetrically with a birdie on the positive half-cyclebefore the bottom half-cycle shows any distortion. | ||
Sony | STRAV970X | UNIT GOES INTO PROTECTION WITH HIGH VOLUME ON REAR AMP | Setting the rear Amp volume to high causes the Protectioncircuit to activate. I connected 8 Ohm dummy loads to the rear output andthe output clips unsymmetrically with a birdie on the positive half-cyclebefore the bottom half-cycle shows any distortion. | ||
Sony | STRGX67ES | UNIT GOES INTO PROTECTION WITH HIGH VOLUME ON REAR AMP | Setting the rear Amp volume to high causes the Protectioncircuit to activate. I connected 8 Ohm dummy loads to the rear output andthe output clips unsymmetrically with a birdie on the positive half-cyclebefore the bottom half-cycle shows any distortion. | ||
Sony | STRGX57ES | NOISE IN REAR SURROUND CHANNEL WHEN NO SIGNAL PRESENT | The rear surround channel has a high frequency hiss presentwhich is most noticeable with the master volume turned up to at least 50%,the rear channel level at 0dB and no signal source present (ie. betweentracks on a CD). There is also a noticeable buzz | ||
Sony | TADM1000ES | CD1 SIRCS OUTPUT HAD NO CODE BEING OUTPUT | The CD1 4-pin SIRCS output jack had no signal coming out ofit. The Infrared emitter jack for CD1 also had no output. Other SIRCSoutputs were ok. |