MITSUBISHI TV Repair: Common Faults and Solutions.


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Search: MITSUBISHI
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MITSUBISHI Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
MITSUBISHICT25B3STX
Pic blanks out into a small squareReplaced c965,c970,c987,c974,c718.
MITSUBISHICT25B3STX
No e-w corrIc551 tea2031
MITSUBISHICT25B3STX
Field 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 plug
MITSUBISHICT25B2STX
Smeary video esp when coldCheck/replace caps in if can
MITSUBISHICT25B2STX
Several attempts reqd to sw on & ht high initiallyC909 2.2uf in primary of psu.
MITSUBISHICT25B2STX
No soundFormat eeprom as per manual
MITSUBISHICT25B2STX
Nicam dropout with cracklingDry joints if unit
MITSUBISHICT25B2STX
Frame collapseReplace ic451
MITSUBISHICT25B2STX
Field collapse , no 30v railIc551 ( ew ) & r976 , also check z551
MITSUBISHICT25B2STX
Field 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 it
MITSUBISHICT25B2STX
Field collapseIc451 tda8178s - if tda8171 used mod reqd
MITSUBISHICT25B2STX
Dead - q901 s/c.Fit mod kit ( wve 77901 ) r901 , d908 , q901 , c908 to 2700pf , c966.
MITSUBISHICT25B2STX
Buzz on sound - flat pic0.47µ 50v electrolytic in if and dry joints in if
MITSUBISHICT25AVIBDS
Slow startup.Change c955 ( 2200uf )
MITSUBISHICT25AVBDS EE3
Int sw on/ off - g led lights but no pic/sound (no line drive)C956 470uf 6.3v in secondary power supply circuit, close to ic951
MITSUBISHICT25AV1BS EE3
No e/w or width control (after csd3 470n replaced)L504 burnt & shorted windings - rewound with 493 turns - also check tda2013a e/w chip
MITSUBISHICT25AV1BS EE3
Field collapseTdad171 & r516 0r82 1/or a/s
MITSUBISHICT25AV1BS EE3
Dead - 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 tea2031a
MITSUBISHICT25AV1BS EE3
Blank 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/c
MITSUBISHICT25AV1BS
No sound - pic okReset eeprom settings from infomation provided by darren hoskin & graham cooke