| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV32V16 | LOOSING VERTICAL LINEARITY,IC501 | Unit loosing vertical linearity after it has been playing for a while. | ||
| Sony | KV32S15 | NO PICTURE BUT SOUND OK, REPLACED T502 | Customer reported good sound, intermittent rattles but nopicture just a dark screen. Troubleshooting revealed no high voltage,voltage check at Flyback pin 2 & Q591 collector proved 135v supply wasnormal found no waveform at collector of Q502. Voltage | ||
| Sony | KV32S12 | DISTORTED PIN CUSHION, C540 | Pin cushion distortion. Tech found E. W. signal changewhen Pin Amp is adj., but no change observed on IC504/pin 7.Found saw tooth signal is not right looks like horizontal pulse onIC504/pin 5. | ||
| Sony | KV27V10 | PICTURE FADES IN & OUT, Q505 | Picture would fade in and out, almost like a bloomingeffect. | ||
| Sony | KV27S25 | NO HIGH VOLTAGE, AUDIO OK, IC351 | Found 9 volt line from power supply at 8 volts, IC351, on the A board was defective. | ||
| Sony | KV27S25 | NO PICTURE, REPLACED CRT | The unit came in with no picture, but sound has no problem. Found G2 (220V) was missing, disconnecting socket of CRT then G2 voltages back. I found CRT shorted. | ||
| Sony | KV27525 | NO HIGH VOLTAGE DUE TO BAD IC351 | No high voltage, but Audio has no problem. Found 9v lines from power supply reading 8v. | ||
| Sony | KV13VM20 | CAPSTAN MOTOR INTERMITTENT WILL NOT ROTATE, SCREW JAMMED | Front loading assembly will not operate or eject due toscrew in Loading Ass'y. Screw too long caused a the motor to | ||
| Sony | KPR4150 | RED REGISTRATION OFF | The unit has bad registration with Red. Replaced Red registration IC6, but did not correct problem. Center of screen ok, but outer edges off by one inch and size and linearity controls had little effect. | ||
| Sony | KP61XBR48 | NO CUSTOMER REGISTRATION FUNCTIONS, ADJ. PJTV | ASC replaced the D Board, A-134-6296-A, due tointermittent registration problem. Loaded original data from old board.New board corrected problem but when customer registration adjustments areselected from main menu the adjustment did not work. Estab | ||
| Sony | KP53XBR45 | STUCK IN VIDEO 1 MODE, SEE BELOW | Customer could not change TV modes with remote or frontpanel. Unit seems to be stuck in the video 1 mode. | ||
| Sony | KP53S15 | CUSTOMER CONVERGENCE IS NOT RETAINED. IC003 | Customer would adj his convergence and picture settings andthe next time they turned the set on the adjustments were lost. SOLUTION: The memory IC for the customer controls is IC003. The memory IC for Dynamic Convergence is IC005.Note: | ||
| Sony | KP46S15 | CUSTOMER CONVERGENCE IS NOT RETAINED. IC003 | Customer would adj his convergence and picture settings andthe next time they turned the set on the adjustments were lost. SOLUTION: The memory IC for the customer controls is IC003. The memory IC for Dynamic Convergence is IC005.Note: | ||
| Sony | KP41T15 | CUSTOMER CONVERGENCE IS NOT RETAINED. IC003 | Customer would adj his convergence and picture settings andthe next time they turned the set on the adjustments were lost. SOLUTION: The memory IC for the customer controls is IC003. The memory IC for Dynamic Convergence is IC005.Note: | ||
| Sony | TAAV521 | UNIT IN PROTECT - REPLACED C753 | Unit in protect. Found a +10 volt offset on speaker line.Checking with scope could not see any clipping or distortion. Checked alltransistors, diodes, resistors and caps. Found C753 had 53 ohms ofresistance. |