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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | STRAV1020 | PROTECTION CIRCUIT ACTIVATED | Protection flashes on front display. Q-719 (relay drive)shuts off de-energizing RY-701. Thus opening the signal path to speakers. | ||
| Sony | CFDD73 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | CFD455 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | CFD454 | INTERMITTENT SKIPPING / TRACK JUMPING | Unit would intermittently skip and sometimes would not AMS.Upon monitoring sled motor drive voltage, found it to be increasing.Normally, it is about 0.7V. | ||
| Sony | XR6180 | TAPE DECK WILL NOT FUNCTION OR WILL FUNCTION INCORRECTLY | Have seen several units so far where both Q-405 and the AMSplunger were defective. The plunger was actually melted. I am unsurewhether the plunger or the drive transistor originally caused theproblem. | ||
| Sony | SLHFT7 | POPPING IN BETA HIFI | Popping sound in beta hifi. | ||
| Sony | SLHF1000 | NO BETA HI-FI RECORD | No Beta Hi-Fi Record. Playback or pre-recorded material ok.All voltages ok on IC-004. Missing switching voltages at pin 44 IC-003.Found open foil between Q-610 and D-606. Simulated shorted transistor. | ||
| Sony | KPR46DX10 | SNOWY PICTURE ON MAIN SCREEN WHEN IN AUX, CUSTOMERS FAULT | Customer was complaining that when they hit Aux they only hadpicture on the child screen, with snow on the parent screen. -HQ COMMENTS: Found that they were using a VCR, and cable box in linewith the Converter and Aux. terminals. With the VCR connecte | ||
| Sony | DTC75ES | TEST TAPE TY7252 | Recommended test equipment list for DAT specifies a TY7251test tape for tracking. DTC-75ES manual calls for a TY7252. Are theyinterchangeable? -HQ COMMENTS: I will have to check with Tokyo. I suspect that there isa typo in the DTC-75ES service manual | ||
| Sony | SPP320 | INTERMITTENT RINGING | The Handset would only ring sometimes. In addition, theHandset would intermittently not beep when keys were pressed. Flexing theHandset Main PCB would cause the ringer to function. | ||
| Sony | CCDF70 | INCORRECT SLOW MOTION OPERATION | Slow motion operation erratic. | ||
| Sony | KV2726R | SET IN SLEEP MODE AT TURN-ON, REPLACE IC-101 CONTROLLER | When set was turned on, it was in the sleep mode per non-authorized servicer. After several checks, found pin 15 of IC-102(memory) to read zero volts. Isolated pin 15 and 5 volts would appear onthe 5 volt line. All other readings were good. With pin | ||
| Sony | FD2A | PICTURE LOOKS OUT OF FOCUS, REPLACED C555 | Picture appears as raster only, out of focus. In reality, thesweep is displaced far above the top of the tube due to DC level upsetcaused by shorted C-555. | ||
| Sony | FD10A | NO HORIZONTAL SYNC, REPLACED C506 | No horizontal sync. OV at pins 17 and 18 of IC-501 causingphase detector inoperation due to shorted C-506 (pin 15, also 0 volts). | ||
| Sony | TAM50 | UNIT DEAD, DOES NOT RESPOND TO ANY BUTTON - ALL LIGHTS OFF | Unit is dead. Does not respond to any button. None of thelights turn on and no beep is heard.The micro IC-3 had all the right voltages, except for IC-3/pin 8 which waslow instead of high. Found that the TIME STAMP IC-10 had no supplyvoltage. |