mitsubishi Repair Tips




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MakeModel Ch.SymptomProblem SolutionSolutionBy:
MitsubishiCT29A4STX
Red bleeding on white back groundsRemove from PCB R606, R607, R608 and increase R609 to 56R
MitsubishiCT29A4STX
N-S adjust outQ4009 on the pincushion pcb
MitsubishiCT29A4STX
No sound1000µ 35v cap in psu had leaked over print & damaged earth return
MitsubishiCT29A4STX
NO SOUNDCHECK PROGRAMMING , THEN try Text if not working MAY BE MAB8461 ON TEXT BOARD.
MitsubishiCT29A4STX
Hum from 1 speaker in st/by onlyQ954 2SB1135
MitsubishiCT2965STX
Tripping & LED flashes for 1st 15 mins b4 TV comes onC905 220µ low cap - next to PSU IC
MitsubishiCT2965STX
NO SOUND OR PICTURE - IC901 INT SC AND R901 OC.IF Q901 SC CHECK D909 ( OUT OF CCT )
MitsubishiCT2965STX
Dead.CP Z950 ( SOC3150 ) now PRF5000 Part No. 299P132010.
MitsubishiCT2965STX
DEAD FUSE Z950 OC SOC3150REPLACE WITH PRF5000 Pt No 299P132010
MitsubishiCT2965STX
Chirping noise in st/byCheck C912 4.7uF, C906 47uF, C959 100uF, C905 220µ & check for dry joints
MitsubishiCT29655TX
The standby light was on and flickering , but apartis in the primary. C905 ( 220uF , 25V ) .
MitsubishiCT2965 ( STX )
Dead - Q901 s/c.Fit mod kit ( wVe 77901 ) R901 , D909 , Q901 , C908 to 2700pf , C969.
MitsubishiCT2965
Set buzzing - Blown line transistor.Q901 kit+IC901 , TEA2165 ( was 2164 ) , Z950 res , C906/956 , R950 , Dis L951 60w to deck if lit PSU ok
MitsubishiCT2965
Int blank raster.Drys around the SAW filter or coils L4/5 , if not mod kit AFT1 mits
MitsubishiCT2965
Ghosting or ringing.Drys around the SAW filter or coils L4/5 , if not mod kit AFT1 mits
MitsubishiCT2964STX
Dead with psu blownCheck C909 (47uF 50V), C920 (470uF 25V), C923 (100uF 10V), C4009, (47uF 25V), IC4000 (TL082CP), D4000 (1N4148 s/c), Q4005 (BC337 C-E s/c), (D4006 8.2v zener)
MitsubishiCT28BW2BD
Reverts to st/by at sw onD507 BYD33G s/c in 28v supply to FOP
MitsubishiCT28BW2BD
No soundLT reg's were dry jointed causing intermittent loss of picture and sound, and I am sure this is what corrupted the eeprom. The Chassis is an EE3W and to access the service menu you need to press this sequence. "Menu,2,3,5,7". the adjustments are made in the same way as the EE3.
MitsubishiCT28BW2BD
Lum intDry joint 8v reg Q952 (On same heatsink as IC401 7 pin LT reg)
MITSUBISHICT28BW2B
SMEARING ON WHITES LOOKS LIKE SOFT CRTREPLACE R686 ON CRT BASE 1.8K OHM