Search: MITSUBISHI
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MITSUBISHI Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
MITSUBISHIEURO 12
No signals aft 5 minsDry joints 4mhz xtal in prescaler
MITSUBISHIEURO 12
No audio pback from mono vcr or sat rxIc702 eeprom (new one needs reprog) or get kit ic702-kit; pt no of chip = 263p434020
MITSUBISHIEURO 12
Luminance intQ202 j501q
MITSUBISHIEURO 12
Lines on pic with whistlingC956 2200µ 16v in psu
MITSUBISHIEURO 12
Int sound/pic - comes & goes with a tapDry joints vif module
MITSUBISHIEURO 12
Int sound/pic - comes & goes with a tapDry joints if can
MITSUBISHIEURO 12
Int nicam crackling - tuner driftDry joints if unit esp on sawfs & coils
MITSUBISHIEURO 12
Int field foldover/lack of height - low ht at 87vNo set ht control, crack in print between base q952 & r956/7 junction
MITSUBISHIEURO 12
Int blows q552Dry joints t551
MITSUBISHIEURO 12
Hum in st/by & no degaussingC960 1000µ 35v in 24v supply
MITSUBISHIEURO 12
High ht - should be 120vC906 47µ 50v, c909 2µ2 50v & 2 x 3v zener diodes d907 & 908
MITSUBISHIEURO 12
Freq blows sd1887 sw mode transistorMod kit avail from wve (q901 modkit) & change tea2261
MITSUBISHIEURO 12
Field collapseIc451 tda8178s (must use correct one or foldover occurs if tda8178fs is used - very expensive!) also check c452 220µ 35v & 122v ht at tp91
MITSUBISHIEURO 12
Field collapseReplace tda8178s & check c956 1000µ 35v, c452 220µ 25v & ht - mitsi mod kit 2 available from grandata (cheaper)
MITSUBISHIEURO 12
Field collapseReplace chip - must be same suffix - use phoenix repair kit from grandata
MITSUBISHIEURO 12
Field collapseNo 28v to tda8178s - r976 0r82 in psu o/c
MITSUBISHIEURO 12
Excess width, bowed verts & pic shifted sidewaysLow amp h sync fback pulse from lop - d559 1n4148 s/c - check for dry joints loptx
MITSUBISHIEURO 12
Excess widthTea2031a
MITSUBISHIEURO 12
Dies at sw on with squealingC956 1000µ 35v, c958 1000µ 16v, c964 1000µ 50v leaky & dry joints & ic551 (e/w chip) & tea2031a damaged
MITSUBISHIEURO 12
Dead or int reverts to st/by - loptr q522 fails periodically - possibly due to high htC906 47µ 50v drive coupling cap - also check c905 470µ 35v, c909 100µ 25v,c920 100µ 25v, r961 150k, r972, r960, d907 rd3.0 s/c & ic950; q522 = 2sd1877 (21"), 2sd1878 (25"), 2sd1879 (29")