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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV27V55 | HIGH PITCH SQUEAL, C519, AND C548 TOUCHING, SEE S/B 184 | The set had a high pitch squeal, moving the chassis wouldchange the pitch. The problem was traced to C519 or C548, both weretouching the shield near the flyback. I am not sure which capacitorcaused the problem, but I suspect it was C519. | ||
| Sony | CDXA55RF | SKIPPING WHEN VEHICLE MAKES TURNS (REPLACE OMD CHASSIS ASSY) | The CD player would skip only when the car would go aroundturns. The problem is caused by wobbling of the spindle motor. | ||
| Sony | CCDTR5 | MISSING PART NUMBER IN SERVICE MANUAL, HALL ELEMENT/FP115 BD | This part was not included in the service manual. -HQ COMMENTS: The part number for the hall element is the same as allother FL mechanism units (1-808-448-11) | ||
| Sony | CDPC515 | NO FOCUS (REPAIR OPEN FEEDTHROUGH LOCATED NEAR IC102 & C154) | LD was on, but the objective lens would not focus. I checkedthe focus and tracking coil impedance at CN102 and they showed properimpedance (8 ohms). I was unable to obtain proper output voltage to focuscoil connection at CN102. IC102 had proper voltag | ||
| Sony | KPR53XBR15 | AFC PROBLEM, INTERMITTENT PIX ROLLING HORIZONTALLY, E1 BOARD | The customer complained of intermittent (AFC) picture rollinghorizontally. The picture got much worse as time went on. | ||
| Sony | BI500 | WON'T PLAY/REC OR FF BUT RWD, REPLACE SUPPLY REEL TABLE ASSY | The unit would shut-off when placing the unit intolisten/dictate or fast forward mode. The unite will only operate inrewind mode. | ||
| Sony | BM540 | NO / INTERMITTENT MOTOR MOVEMENT, IC301 RESOLDERING | When the unit is put into listen/dictate/rew mode, there is nomotor movement. Voltages are present at IC301. | ||
| Sony | KPR41DS2 | RED AND BLUE REGISTRATION BOWING, REPLACED IC-6002 | There was a convergence problem- a bowing on blue and red. | ||
| Sony | SLV575UC | LOSS OF SOUND AFTER A WHILE: IC006 HF-9 BOARD | There was muted audio in VTR or Tuner mode after a minuteor two. Replacing IC001 did not fix the problem. Lifting pin 2 of IC006let the sound on the left channel come on. | ||
| Sony | CDPC322M | NO OPERATION, NO SOUND, DISPLAY NOR MECHANICAL MOVEMENT | |||
| Sony | STRD790 | NO POWER - F902, Q705 & Q706 REPLACED FOR SECOND TIME | I originally fixed the unit by replacing F902, Q705, Q706(W15H0521) but the unit came back with the same problem. I found thecustomer hooked two speakers in parallel into the speaker terminal usingfive speakers (not known speaker impedance). Refer to F | ||
| Sony | SRFHM55 | BATTERY WILL NOT LOCK TIGHTLY | The battery lid will not lock in tight enough to hold thebattery. Replacing the battery lid has the same result. Just the weightof the battery, or a light touch to battery lid will cause it to unlock. | ||
| Sony | WMFX55 | CASSETTE AUTO REVERSES EVERY 5 SECONDS CONTINUOUSLY | After pressing play, the tape would play for five seconds andthen auto reverse. After checking the mechanical section, everythingseemed good. I was trying to run the unit with the PCB out, so I hookedup the square wave oscillator (20HZ) to PH701. It ap | ||
| Sony | CCDFX310 | NO COLOR ON PLAYBACK, L305/VA71 BOARD | I put in WR5 9NS color bar tape and scoped IC301 pin 42 CRF inbut there was no signal. I found L305 open. The CRF passes from a .01uFcap through a 1k resistor to L305 which is part of a low pass filter.L305 had RF going in and nothing coming out. The | ||
| Sony | CCDV11 | CHROMA UNLOCK ON PLAYBACK | The chroma was unlocked on playback. This only occurred onself-recorded video, pre-recorded video was OK. |