TV Repair: Common Faults and Solutions.
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Results: 87420
Results: 87420
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | SL2300 | Cassette ejects right after threading completion | Intermittently, when cassette is inserted, unit will threadnormally, then eject after a few seconds. if cassette is threadedmanually, all functions would work. | ||
| SONY | ICF7600 | No mw/sw | The unit had no mw/sw. we found the problem to be an openift-a1 transformer. it was open on the primary side. | ||
| SONY | WMD6 | Intermittently will not enter play | We have seen at the ssc a number of wm-d6 that intermittentlywill not engage play. it acts as if the head block is hanging up - whichin fact it is doing. the problem is that the converter board comes looseand intermittently will snag the head lead. th | ||
| SONY | CDP30 | Optical block replacement | Servicer ordered p/n as listed in s/m (x-4910-424-1) andreceived this number. upon installation he noted the cp201 connector onthe new block was black and the one on the old block was white. the newoptical block would not operate (laser dead). | ||
| SONY | CDX5 | Intermittent operation | X-5 amd x-7 come in with intermittent problems such as theunit attempting to unload the disc while it is playing or the sled is notmoving. these problems have been caused by faulty feed thru on the mainpcb, usually in the loading motor circuit and the s | ||
| SONY | PSLX235 | No tuner or turntable operation in sen-300 system | Complete sen-300 system not operating. ta-ax335 provides acto other components, with one winding for the tape deck and another fortuner and turntable. fuse in tuner winding open. jumping across fuse andconnecting all components showed drastic ac line | ||
| SONY | KV2775R | Voltage of the anode side of d606, about -100v | The anode side of d606 is marked -100v on the circuit board.the schematic is marked -33v. you read -100v. which is correct? -hq comments: no. 5 pin of a-10 connector on a board is approx. -100vactually. this voltage is reduced to -33v by r604 (4.7k o | ||
| SONY | BMC220 | Poor video | When tape is played back, symptom is heads are dirty, or onehead is missing. found on recording, flexing the board by cn002 i couldmake a head come and go. | ||
| SONY | SLHF550 | Dancing chroma noise | Dancing chroma noise approx. 1 1/2 from bottom of screenon 27 monitor, problem only shows up on high grade tapes and is muchmore prevalent running to a video input. -hq comments: the chroma noise is due to interference from the ctl headto the video trac | ||
| SONY | BMC110 | No picture | Found dc voltage at g1 (cn505, pin 1, vc-1 bd) about 65vdc(normally -11vdc). vc-1 board check out ok in another unit. | ||
| SONY | CCDG5 | Intermittent no picture | Tapping ic6 (rom), cd board, casued problem to occur. | ||
| SONY | CCDV8AFU | Picture distortion during playback | 1) capstan servo would not lock during playback. atf errorvoltage (ic106, pin 25, vi-6 bd) at 4vdc. no output at ic106, pins 11 &12. 2) capstan also stopped intermittently during playback. pin 8 ofcn511, sv-13 bd, not fully extended. | ||
| SONY | CCDV8AFU | Tape intermittently ejects while threaded when pb is entered | 1) tape intermittently ejects while threaded when pb button ispushed (causing tape damage). 1) intermittent capstan rotation during pb. | ||
| SONY | CCDV8AFU | Cassette door won | Locked mechanism using mode selector jig. during loading unitwould intermittently thread fully, then unthread slightly causing pinchroller to repeatedly engage and disengage. | ||
| SONY | CCDV8AFU | Unit shuts down after cam power is turned on | When cam power only or cam + vtr power is turned on, unitshuts down after a few seconds of playback or recording. playback offunction tape indicated no drum lock. self recorded tape appeared locked. | ||
| SONY | CCDV8AFU | Intermittent no power on | Sys. 5v was present, but mode control cpu, ic601, sk-7 bd,would not issue vtr on signal (pin 19). | ||
| SONY | FD2A | Dead, replaced q602, ic601, t601 | Unit was dead. replacing q602 and ic601 restored raster, butsound and picture were weak. | ||
| SONY | CFSW400 | No audio in tape mode | No audio in tape mode. | ||
| SONY | CDXR7 | No disc eject | During disc eject - disc jammed against the edge of the door and reloads. | ||
| SONY | SL20 | Sub part for ic201 | S/m lists ic201 as m54543l (8-759-600-24). the ic that isinstalled in the four units i have inspected is lb1640 (8-759-801-60).the lb1640 ic is a 10 pin ic, and the m54543l is a 9 pin ic. are theseic -hq comments: either one may be used. when using t |