| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | STRD2020 | INTERMITTENT LOSS OF AUDIO | Low current failure. Loss of audio signal all modes, and allfunctions. Tapping unit may cause or correct problem. | ||
| Sony | TCK444ESII | REPLACEMENT OF R/P HEAD | When replacing R/P head, it is very difficult to align and ad-just. Particularly bias adjustment. Record output is very low. The partsupplied was a replacement part no. original 8-825-500-31. It wassupplied with no information on connections which co | ||
| Sony | TCRX420 | NO FUNCTIONS | Display flashes and function lights blink - no functions work.Replaced micro-P, FL tube, rectifer diodes-all voltages up and correct.Noticed some pulsing on power line to uP. Found open fusible resistor ontransformer board. | ||
| Sony | ITK500 | NO RADIO OR SPEAKERPHONE AUDIO | No audio from speaker. | ||
| Sony | PSLX3 | TURNTABLE PLAYS 33 OK, NOT 45 - ARM DROPS AT 12" LOCATION | Would play 33 records, but when switch to 45, arm still wouldland on 12 33 not on 7 45. | ||
| Sony | TAF444ES | WHEN VOLUME TURNED UP PAST 16, DISTORTED SOUND OCCURS | Distorted volume only when attenuator is turned past 16. | ||
| Sony | STRGX7ESII | UNIT IS DEAD | Blown fuses F-801, F-802 also shorted D-803 power supply diodecaused by TH-801 being pinched by power transformer metal housing. Seemsthat from factory this part was accidentally pinched underneath the trans-former which caused it to over dissipate and | ||
| Sony | STRAV1020 | LEFT CHANNEL DISTORTED AT HIGHER VOLUME | Left channel distorted only at higher volume. Found thatRT-701 bias control had no response on bias adjustment at all. Checkingfound that R-713 10 Ohm resistor was open. | ||
| Sony | CCDF77 | RANDOM AUTOFOCUS AND ZOOM OPERATION | Random autofocus and zoom operation. Found missing data frompin 51 and 52 SCK on IC-501. | ||
| Sony | CCDF33 | CHARACTER GENERATOR NOT WORKING | Character generator not working. Found IC-501 defective. Re-placing IC-501 restored video in data mode but no on-screen display.Found lack of OSD caused by no solder on pin 4 of CN-802. | ||
| Sony | CCDF77 | NO PICTURE IN VIEWFINDER | No picture in viewfinder and found C-171 shorted. | ||
| Sony | CCDF55 | INTERMITTENT RECORD ATF | Tapes recorded and this camera lost ATF lock on playback.Pre-recorded tapes playback ok. | ||
| Sony | KV32XBR65 | PICTURE FADES OUT AFTER 10-15 MINUTES, NO HEATER VOLTAGE | Unit would power up normally but after 10-15 minutes the pic-ture would fade out. Sound was normal. After picture was lost, scopingthe heater terminals on the C PCB showed no filament voltage to the CRT. | ||
| Sony | KV2781R | INTERMITTENT LOSS OF H OUT TRANSISTOR, REPLACE C-578 | Short life for horizontal out transistors. May last from afew days to many months. Found C-578 decreased in value altering thedrive signal. -HQ COMMENTS: This is the decoupling cap located on the base of theHorizontal Drive transistor. | ||
| Sony | KV27EXR15 | NO SOUND ON ONE CHANNEL, REPLACE C-466 | No Sound on one channel. Speaker actualy got hot from internalshort. Replaced the speaker and unit returned to normal. Several monthslater unit returned with the same exact problem however this time C-466was found shorted. -HQ COMMENTS: C-466 is the DC |