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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | SPP320 | MOTOR BOATING IN HANDSET AUDIO | Motor boating in handset. Both in transmit and receive audio.Disconnected pin 3 of IC-4 and problem cleared. Disconnecting input pin 8did not solve problem. | ||
| Sony | KV13TR24 | LOW CONTRAST, REPLACED D-317 | The unit had very low contrast. We found the picture controlvoltage at IC-301/pin 41 to be almost 0. There was also excessive noiseon the control line. We traced the problem to a leaky D-317. D-317 ispart of the circuit (ABL feedback) which provides | ||
| Sony | SLV272UC | NO COLOR WHEN PLAYING BACK PRE-RECORDED TAPES | Unit plays back its own recordings with good color, but playsback pre-recorded tapes without color. | ||
| Sony | WMF2081 | DESCRIPTION AND PART NUMBER CORRECTION: IC-101 | The part number and description for IC-101 shown in theservice manual are incorrect. | ||
| Sony | TCDD10 | REEL MOTOR BRAKE ASSEMBLY MALFUNCTIONS | If reel motor brake lever sticks to the reel table, the reelmotor will not work. To prevent this, replace the left and right brakelever assemblies which were not previously available separately.Previously the entire reel assembly had to be replaced.Part | ||
| Sony | DTC1000ES | REEL MOTOR BRAKE ASSEMBLY MALFUNCTIONS | If reel motor brake lever sticks to the reel table, the reelmotor will not work. To prevent this, replace the left and right brakelever assemblies which were not previously available separately.Part numbers are as follow: A-4910-211-A Brake Lever Asse | ||
| Sony | KPR53EX35 | NO VIDEO FROM RED CRT RASTER ONLY | No video from the red CRT. | ||
| Sony | KPR46DX10 | PICTURE BLANKED - AUDIO OK, REPLACED IC-1304 | Picture blanked and audio is ok. Set is not in protect blank-ing (Q-4441 collector is low). Had RGB output from IC-201 (A Board).Also had 230V on C boards (filaments lit). | ||
| Sony | STRAV550 | DOESN'T TUNE AM OR FM | Would not tune AM or FM. Display verified acceptance of keycommands. Substitution of VC tuning voltage proved signal circuits ok.Q-207 active low pass filter did not respond to normal PWM signal. For-cing the gate of this transistor to 4.8V (normal is | ||
| Sony | KV32HSR10 | REMOTE INOPERATIVE, REPLACED C-1701 AND C-1702 OF "A" BOARD | Remote inoperative on all functions. Scope showed remote sig-nal going into IC-1701 but no output. All voltages were present or veryclose. | ||
| Sony | TAAX311 | DIFFERENT PARTS IN UNIT THAN WHAT IS LISTED IN S/M | The output transistors are listed in the S/M as 2SC-2921 and2SA-1215. The actual parts in the unit are 2SC-3855 and 2SA-1491. Theydo not look like they have been replaced previously. We got the P/N forthe 2SC-3855 and the 2SA-1491 from the semiconduct | ||
| Sony | CCDF35 | BAD LOADING MOTOR BLOWS FUSES | Unit blew PS-503 every two or three days. Video technician inBurbank tells me he has had three of these units with this problem. Hetraced problem to the loading motor. The only way he could find it was tosubstitute the boards first. | ||
| Sony | SLVR5UC | NO PLAYBACK VIDEO - PLAYBACK AUDIO IS OK | When unit is put into Playback mode, audio is present but E-Evideo remains on monitor. No Playback video. | ||
| Sony | KV13TR24 | INTERLACE DISTORTION IN UPPER THIRD OF RASTER. REPLACED C541 | Picture had extreme interlace distortion in upper third ofraster. This condition was intermittent. Scope shot at pin 6, IC-501 re-vealed severe oscillation or ringing at one side of the trace. BridgingC-541 with another capacitor of equal value cleare | ||
| Sony | CDPH300 | INSTRUCTIONS FOR TEST MODE INCORRECT IN SERVICE MANUAL | Unit will not go into service mode. |