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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
MitsubishiEuro 12 CT25M3TXBlank raster - ok via scart - eeprom IC702 X24C04P faulty14-09-04
MitsubishiEuro 12 CT29B2STXField collapseFOP chip - comes as a kit as orig chip NLA - also check C906 47µ 63v, C909 10µ 63v, C452 220µ 35v14-09-04

MitsubishiEuro 12 CT29B2STXN-S faultyQ4009 -30v reg on separate board near LOPTx - use BC640 in lieu14-09-04
MitsubishiEuro 14Blank screen - no sound (Green LED lit)EEPROM IC702 faulty - check for 5v at pin 8 & data on pins 5 & 6 first14-09-04
MitsubishiEuro 14Snowy/blank pic, no OSD, no tuningNo field pulses pin 27 IC701. Replace Q707/8 DTA124ES14-09-04
MitsubishiEuro 14 CT21M3TXDead - but goes in & out of st/byHas 110v on LOPTr but no line drive dry joints IC951 - also check for dry joints on other regs14-09-04
MitsubishiEuro 14 CT25M3LTXField collapse - caused by FOP chip AN5521 which failed again shortly after replacementC560 3300µ 35v in 27v supply seems to have been cause14-09-04
MitsubishiEuro 14SFdead or int deadC914 47µ 35v is sus also C905 470µ 25v14-09-04
MitsubishiEuro 14SFField collapse (pic blanked)Z551 315mA fuse in LOPTx 27v derived supply o/c, IC5E1 TEA2031A EW corr chip faulty - replaced but overheats. Possible causes - L554/514-09-04
MitsubishiEuro 14SFno / int sigsdry joints on lead by PLL IC14-09-04
MitsubishiEuro 14SF CT25A5STXField collapseZ551 cct prot o/c, IC5E1 TEA2031A on E/W pcb s/c but replacement failed shortly after replacement. L555 shorted turns (Pt no SEME TPAR2343)14-09-04
MitsubishiEuro 14SF CT25A5STXhor lines across screenC955 dry joints14-09-04
MitsubishiEuro 3DeadR901 4R7 5w o/c - no other fault apparent14-09-04
MitsubishiEuro 3Int or perm deadCheck R915/916 start up resistors 2k2 3w14-09-04
MitsubishiEuro 3Replacement of STR4411SMake sure use same suffix chip14-09-04
MitsubishiEuro 3St/by onlyLOPTx pins 1&2 s/c to pin 7 - replace LOPTx - HR746114-09-04
MitsubishiEuro 4Black dots & dashes across picDry joint pin 3 IC902 12v reg14-09-04
MitsubishiEuro 4DeadSTR59041 & R2M diode14-09-04
MitsubishiEuro 4DeadQ552 2SD187714-09-04
MitsubishiEuro 4DeadNo psu activity - chopper tfmr o/c winding between pins 5 & 614-09-04
MitsubishiEuro 4DeadLOPTx s/c between pins 2 & 714-09-04
MitsubishiEuro 4Dead - fuse o/cSTR59041 s/c caused by leaky JC501R Power Sw tr (use 2SC1815 in lieu)14-09-04

MitsubishiEuro 4Dead - high HT of 190v (156v) & LOPTr s/cCheck C908 10µ 100v & IC901 STR59041 & C909 47µ 50v14-09-04
MitsubishiEuro 4Horizontal lines & streaksC920 470µ in 15v supply line or C908 10µ 100v or C925 10µ 25v14-09-04
MitsubishiEuro 4HT varies with brightness & corrugated vertsR913 hi res contact at mounting lugs; HT = 110v for 51cm14-09-04
MitsubishiEuro 4Int luminance with parts of pic breaking upIC602 TDA4565 virtually no o/p pin 11 - chip faulty14-09-04
MitsubishiEuro 4No raster - sound ok - field collapseNo 24v to FOP chip IC401 AN5521 at pin 27, R563 0R82 safety res o/c - chip also suspect14-09-04
MitsubishiEuro 4No sound/pic - HT okNo line drive as line dr trfmr dry joints14-09-04
MitsubishiEuro 4No start upR975 o/c; Q951 s/c14-09-04
MitsubishiEuro 4No tuning memory or signals - can be tuned in but not storedNo -30v at pin 2 IC702 tuning memory chip; standby trnfmr T951 had o/c sec winding which was possible to repair - also could be C958/C56214-09-04
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