| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1770R | H.V. SHUT DOWN | The unit would go into HV shutdown at approx. 100V appliedAC. Found R559/hold down to be cold soldered. | ||
| Sony | STRVX550 | IC301 SHUT DOWN | The oscillator on IC301 was not running. We found Pin 34 tobe low. This was caused by IC401/P19 staying high. IC401/remote decoderwas defective. -HQ COMMENTS: Actual POWER ON is equivalent to conventional units whenyou press SYSTEM POWER. Then the s | ||
| Sony | STRVX550 | DEAD - NO DISPLAY | No display. No clock signal at Pins 31 or 32 of IC301. Hold(Pin 34) of IC301 at 2.5V. | ||
| Sony | STRVX350 | NO MEMORY | Unit would not retain memory when powered off. HOLD line was7V instead of 4.9V at IC301 Pin 34. Found Q803 leaky. | ||
| Sony | KV25XBR | NO DISPLAY | Two problems: 1) volume changes activate RGB mode. Found RGBbutton jammed closed. 2) no channel/function display. Found L101 on theA board to be open. There is 5V active low info. present at IC104/P12. | ||
| Sony | KV2680R | NO SOUND/PIX, COLD SOLDER ON 12V RECTIFIER D-506 | This unit had no sound or picture. | ||
| Sony | CFS88S | AUDIO FROM TAPE IS DISTORTED/LOW PITCH | The motor was running about 25% too slow. | ||
| Sony | KV2675R | HORIZ OUTPUT TRANSISTOR RUNS HOT, REPLACED T-501 | The horiz. output transistor ran hot on this unit. | ||
| Sony | KV2680R | NO AUDIO, REPLACE IC1107 AND ADD CAPACITORS/DIODE | The customer informed me that just before the sound went bad,they heard a loud snapping noise. I feel when the set is new and thetube snaps during its breaks in period, causes the IC1107 to become defec-tive. -HQ COMMENTS: To protect IC1107 from static | ||
| Sony | KV2141R | HORIZONTAL FREQ OFF - HIGH PITCHED SQUEAL, RESOLDER L801 | Horizontal frequency off produces high pitched squeal. | ||
| Sony | D5 | SLED MOVING TO OUTER EDGE UPON POWER UP | On power up sled moves to outer edge of disc. Pin 68 TC201 isproper level. The only unusual signal is IC501 #23 which goes negative(5V). Changed chips (IC801, IC501) no change. -HQ COMMENTS: (Found over the phone that disc did not rotate while sledmo | ||
| Sony | TC44 | PART NUMBER NEEDED | Need part number of Gear (C) for TC-44. I have informed theservicer that the part may no longer be available. -HQ COMMENTS: Fortunately, the part is in stock at NPC. Part number is3-550-026-00. | ||
| Sony | WMD6C | MOTOR DOES NOT TURN | The customer told me that he plugged in 12VDC instead of 6V.The amplifier section was fine, but the motor did not turn. | ||
| Sony | CFS300 | PART NUMBER INCORRECT - IC3 | On page 18 and again on page 20, IC3 is stated to be a LA4126.On page 29 of the parts list, it is a LA4125T. Which is correct? Theseare not listed in the handbook as being interchangeable. -HQ COMMENTS: The correct part is LA4125T. Part # is 8-759-80 | ||
| Sony | CCDV8 | TAPE JAM | Tape broken and wrapped around top of drum assembly. |