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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| 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. | ||
| Sony | EVP2 | CASSETTE COMPARTMENT CONTINUOUSLY CYCLES IN AND OUT | At plug in cassette compartment continuously cycles in andout. Force load the cassette and all functions work. Switched 5V line toSyscon read 4.7V. | ||
| Sony | STRAV920 | SEVERAL FUNCTION KEYS DO NOT OPERATE | Keys in row would not operate Video 2, Tuner, 6, 5, 4 andEqualizer. Also DRLC would not operate in any mode. | ||
| Sony | FHB5CD | MUTING STAYS ACTIVATED AFTER POWER INTERUPTION IN TIMER MODE | When the unit is switched in timer mode, the muting circuitswill stay activated if there has been a power interruption before the setis switched on. | ||
| Sony | MHC1500 | MUTING STAYS ACTIVATED AFTER POWER INTERUPTION IN TIMER MODE | When the unit is switched in timer mode, the muting circuitswill stay activated if there has been a power interruption before the setis switched on. | ||
| Sony | CCDF55 | INTERMITTENT OPERATION | Unit had several intermittent problems. No camera luminance,no drum FG and overdrive of capstan motor. | ||
| Sony | EVCX10 | DARK/POOR PICTURE - IRIS NOT WORKING | Flex board damaged between the FD-4 board and CN-703 of thecamera block. Found crimped between item 104 on page 132 of the manualand the inside of the cabinet. Suggest putting a fold in the flex cablewhere it meets the edge of the FD-4 board before ass | ||
| Sony | EVCX7 | DARK/POOR PICTURE - IRIS NOT WORKING | Flex board damaged between the FD-4 board and CN-703 of thecamera block. Found crimped between item 104 on page 132 of the manualand the inside of the cabinet. Suggest putting a fold in the flex cablewhere it meets the edge of the FD-4 board before ass |