| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | SPP90 | NO POWER IN BASE OF UNIT | No power in base of SPP-90. Connection between D-301 and R-401is broken loose. Some were never soldered and some just break loose. | ||
| Sony | TAM50 | BEEP TONES DURING MEMO OR CONVERSATION RECORD | Constant or pulsing beep tones during Memo Record andConversation Record. | ||
| Sony | TAM30 | BEEP TONES DURING MEMO OR CONVERSATION RECORD | Constant or pulsing beep tones during Memo Record andConversation Record. Also applies to serial numbers 12121, 15230 and27297. | ||
| Sony | TCFX510 | INCORRECT PART SUBSTITUTION - CAPSTAN MOTOR | When the above P/N is ordered, it subs to P/N 1-541-745-11.This motor is an EG-530AD2B. It physically fits in the unit with noproblem it is physically the same. However, the motor runs too fast,even with the speed control adjusted to minimum. Is there | ||
| Sony | KV27HSR10 | NO HORIZONTAL PINCUSHION CORRECTION, CRACK NEAR FBT/PIN 11 | Pincushion adjustment inoperative L-501, R-571, Q-505, etc.checked ok. DC voltages on IC-531 ok. Replacement of IC-531 did notchange condition. | ||
| Sony | FD250 | STATIC THROUGH ALL STATIONS, OPEN FOIL | It won't tune to any station, only snow. | ||
| Sony | KV32XBR50 | H-STAT CONVERGENCE PROBLEM, REPLACED CRT | After about three minutes of operation, horizontal static con-vergence shifts out gradually. | ||
| Sony | KV1943R | IMMEDIATE SHUT DOWN, REPLACED C-539 | Unit came in dead. After replacing shorted Q-901, Q-902 andopen F-603 regulated +115VDC read about 130VDC. Replacement of IC-601didn't help. Scoping TP-91 for ripple found about 4VPP horizontal rate. | ||
| Sony | KV32HSR10 | NO COLOR AFTER WARM UP, REPLACE COMB FILTER CM1301 | Color would disappear after about two minutes of operation.Scope signal tracing revealed normal input at comb filter but chroma out-put became distorted and noisy. | ||
| Sony | KPR41DS2 | NO PICTURE - NO SOUND - SLEEP LIGHT ON, REPLACED Q5014 | Power supply stayed in hold down condition and +135VDC line toground measured very low resistance. Found Horizontal Output TransistorQ-5014 shorted. | ||
| Sony | PVM2530 | PICTURE FOLD OVER | Picture folds over after about 10 minutes of operation. E-Bbias on Q-511 drops from -.360VDC to -.150VDC as it warms up. Found D-501becoming leaky. | ||
| Sony | KV32XBR10 | NO PICTURE OR DISPLAY; SOUND OK, REMOVED SOLDER BRIDGE IC500 | No picture or display sound ok. High voltage ok. C boardvoltages are ok. Inputs to IC-301 is ok but no RGB outputs. IC-301 YSpin 15 and IK pin 25 both are normal. Defeating IK pin per FPR did notgive picture. Found OVDC at ABL pin 26 of IC-301 and | ||
| Sony | TCDD3 | WILL NOT LOAD TAPE | Unit will except and reject a tape but will not load a tape.Applied external DC to motor still would not turn. Turned worm gearslightly motor turned, unit would load tape and was not able to see any-thing wrong. | ||
| Sony | TCS470 | MOTOR IS NOISY | The motor has been modified to reduce noise. | ||
| Sony | CDX7520 | AUDIBLE NOISE FROM SPEAKER DURING AMS MODE OF CD | There is an audible noise heard from the speakers during theAMS mode when using CD. The lead wire of the audio GND line picks up thenoise. The following serial numbers are affected: CDX-7520 US, CAN, E 104,801 to 131,000 CDX-7560 |