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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 561
MitsubishiCT25AV1BSNo sound - pic okreset eeprom settings from infomation provided by Darren Hoskin & Graham Cooke14-09-04
MitsubishiCT25AV1BS EE3Blank raster with soundVid signal enters pin 42 IC201 but no o/ps - eventually found due to no 12v crt base - R514 0R82 1/2w safety res o/c14-09-04

MitsubishiCT25AV1BS EE3Dead - off with burning smell - green LED perm litCSD3 470n 400v o/c - looks stressed cause of trouble. Also R510 100R 1/2w o/c - also replaced TEA2031A14-09-04
MitsubishiCT25AV1BS EE3Field collapseTDA8171 & R516 0R82 1/2w o/c14-09-04
MitsubishiCT25AV1BS EE3No E/W or width control (after CSD3 470n replaced)L504 burnt & shorted windings - rewound with 493 turns - also check TDA2013A E/W chip14-09-04
MitsubishiCT25AVBDS EE3Int sw on/ off - G LED lights but no pic/sound (no line drive)C956 470uF 6.3v in secondary power supply circuit, close to IC95114-09-04
MitsubishiCT25AVIBDSSlow startup.Change C955 ( 2200uf )14-09-04
MitsubishiCt25B2STXbuzz on sound - flat pic0.47µ 50v electrolytic in if and dry joints in if14-09-04
MitsubishiCT25B2STXDead - Q901 s/c.Fit mod kit ( wVe 77901 ) R901 , D908 , Q901 , C908 to 2700pf , C966.14-09-04
MitsubishiCT25B2STXField collapseIC451 TDA8178S - if TDA8171 used mod reqd14-09-04
MitsubishiCT25B2STXField collapse - replacement of FOP chipWhen replacing failed IC451 TDA8178S check elects in field & psu ccts; note TDA8178 nla - use TDA8171 & mod kit usually supplied with it14-09-04
MitsubishiCT25B2STXFIELD COLLAPSE , NO 30V RAILIC551 ( EW ) & R976 , ALSO CHECK Z55114-09-04
MitsubishiCT25B2STXFRAME COLLAPSEREPLACE IC45114-09-04
MitsubishiCT25B2STXNicam dropout with cracklingDry joints IF unit14-09-04
MitsubishiCT25B2STXNo soundFormat EEPROM as per manual14-09-04
MitsubishiCT25B2STXSeveral attempts reqd to sw on & HT high initiallyC909 2.2uF in primary of PSU.14-09-04
MitsubishiCT25B2STXSmeary video esp when coldCheck/replace caps in IF can14-09-04
MitsubishiCT25B3STXField o/p IC have short lifeFit MITSIKIT1 & check C906 47µ 50v, C909 change from 2µ2 to 10µ, D907 3v 1w zener & C960/956 1000µ 35v, C452 220µ 35v & dry joints around crt yoke & scan coils plug14-09-04
MitsubishiCT25B3STXNo E-W corrIC551 TEA203114-09-04
MitsubishiCT25B3STXPic blanks out into a small squarereplaced C965,C970,C987,C974,C718.14-09-04
MitsubishiCT25M1Juddering rasterC906 4µ7 25v chopper dr cap14-09-04
MitsubishiCT25M1STXBLANK/NO VIDEOQ702 JC50114-09-04

MitsubishiCT25M1TXDead - psu workingcrack in print coll of lop tr - also change C906 47µ, C905 470µ14-09-04
MitsubishiCT25M1TXField roll int & bent vertsC906 47µ 25v in psu14-09-04
MitsubishiCT25M1TXHORIZONTAL LINES ON SCREEN AND WHISTLINGC956 2200uF 16v14-09-04
MitsubishiCT25M1TXINT BLANK SCREEN+NO SOUNDIC2A2 Q2A2 AUDIO ONLY Q10414-09-04
MitsubishiCT25M1TXINT LOSS OF S/V , CHECK FOR VIDEO IP. AND OP. AT AVIF THERES AN OP. WITH SCART BUT NOT RF , SUSPECT Q2A2 JC501-QR PtNo 266P064010 IF NO PIC BUT SOUND OK CHANGE Q104 JC501. IF U14-09-04
MitsubishiCT25M1TXLOW CONTRAST AND FLYBACK LINESCheck for 2.9V at pin 7 IC251 if low Q704 u/s14-09-04
MitsubishiCT25M1TXMOTOR BOATING IN STANDBYREPLACE Q951 IN POWER SUPPLY14-09-04
MitsubishiCT25M1TXMotorboating type hum from spkrs in st/byQ951 leaky in PSU sec14-09-04
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