Sony TV Repair: Common Faults and Solutions.
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Results: 20067
Results: 20067
Sony Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | TAF555ES | Transistor substitutions | Power amplifier uses many 2sc1815-y transistors in the firststages. parts list subs them with 2sc1364. i believe this is incorrect,since for instance q309 and q310 would need a vceo greater than 60v. myspec list shows a typical vceo for a 2sc1364 of 5 | ||
| SONY | STP7J | Malfunctioning memory chip | This unit worked fine except it was not possible to enter astation into memory. all inputs to the memory appeared to be correct.replacing ic601 (cx761) resolved the problem. | ||
| SONY | ICF2001 | Malfunctioning agc circuit | In fm mode, if there is a large bass sound, it is verydistorted. but if the rf carrier level is low, the bass sound is notdistorted. | ||
| SONY | CFSF11 | Jammed deck | Head gear p/n 3-313-754-01 broke jamming deck. afterreplacing gear, and replacing ball's back under head table, in rwd orrev mode head table does not come up enough to lock in position. with nodisassembly instructions unit cannot be serviced successful | ||
| SONY | CDP200 | Distortion at output | Went through alignment procedure, but found gross distortionin audio output. noticed that waveform at pin 1 ic506 and ic507 was blankfor a portion of the charging time. could not find any voltages or wave-forms around ic505 wrong. | ||
| SONY | CDP200 | Jammed gears on chucking motor | Thrust play on chucking motor was excessive causing gears tojam. the limit switch (s805) did not close until cam chucking plate 60was at the mechanical end of its travel. this caused the motor tocontinue to run for a short time after mechanical movemen | ||
| SONY | CDP101 | Pll out of specification | Disc motor turned backward at maximum speed as soon asturning on the power switch. there was no 1/4 rfck at pin 23 of ic210(cx193). | ||
| SONY | CDP101 | Unit would not respond to remote control | Remote control rm101 would not work with this unit. did nothave another hand unit to try. by repeatedly keying unit and examiningwaveform at base of q1, we determined that product word code being outputwas wrong. for example 10011 instead of 10001. | ||
| SONY | WA33 | Malfunctioning motor | Motor speed will vary after unit runs about 30 minutes. | ||
| SONY | TCK555 | Ground short | The left channel looses record amplitude intermittently.the ground shield between the record and playback boards shorts againstrv301, the left channel record level control. | ||
| SONY | TCFX30 | Error in s/m | In the schematic section (pages 24b, 25 of both manuals)r321 and r322 are mislabelled as r332, r321 respectively. also a missingconnection line exists in both service manuals. it is located to theleft of the mislabelled resistors. -hq comments: the sc | ||
| SONY | TAYX7F | Missing part # in manual | The servicer needs to replace the volume control motor inthis unit. there is no part or even ref. number listed in the manual. -hq comments: 1) checked with npc/kc and found the motor and thevolume control comes as an assy. order the part by the numbe | ||
| SONY | STRVX5 | Part # error in manual | Receiver was dead. checked inside and found pps had nooutput. inverters were changed, still no output. t902 was jumpered andstart ckt was checked, waveform was ok. further eyeball inspectionrevealed c905 was split. -hq comments: please order the cap | ||
| SONY | STR4800SD | Missing part # | A servicer asked the part # for the fm front end (faf-033w).it is not listed in the s/m. | ||
| SONY | NR500 | Error in manual | Incorrect cal. indicator adjustment procedure. see page 10,section 3 adjustments is also error in schematic (pages 15/16/17) - d314.left and right audio channels are shorted together at c133 and c233. | ||
| SONY | MTL10 | Cam gear out of position | Several units did not work out of the box. the problem isthat the main cam gear is not properly positioned. repositioning the camresolves the problem. -hq comments: the main cam gear being out of position may have beencaused by some irregular cassette | ||
| SONY | CFSF11 | Part number for split gear | Found split gear on bracket assy head (#424) on two units.i would like separate part # for gear, or is it included in bracket assypart # x-3313-714-0? -hq comments: the gear is available separately. the part # is3-313-754-01. please refer to the t/n | ||
| SONY | WM7 | Head bracket out of position | 1) no audio, noise only. 2) low volume, audio distorted.3) low audio, low volume, high pitch noise. | ||
| SONY | TCU60 | Capstan motor replacement | The replacement capstan motor assembly is different from theoriginal. in addition to the expected rv1001 speed control potentiometer,there are two additional pots rv1002 and rv1003. -hq comments: the gain adj. of the motor assy (x-3564-030-0) has beenc | ||
| SONY | TCFX77 | Manual corrections | The hardwire diagrams for both the tc-fx77 and tc-fx600 haveerrors. the schematic diagrams appear correct. q504, q506 are shown asnpn transistors incorrectly, they are pnp. |