TV
Repair Database
| Mitsubishi |
2525 |
dead |
R909 330R
D909 RD3.0FB2 (3 volt zener) (264P481060 |
| Mitsubishi |
14FS |
Brightness
varies |
C593 22µ
350v first anode supply faulty |
| Mitsubishi |
14FS |
Herringbone
Pattern |
Ripple on
16v line - C955 2200µ 25v faulty |
| Mitsubishi |
25AV1BDS |
dead/tripping
led flashing |
replace C702
1000µ 6.3v with 10µ & C955 2200µ 16v with 3300µ & do a reset (sw
on whilst holding reset button in (near tuner)) & set up eeprom
options |
| Mitsubishi |
A srs B srs |
GREY SCALE
INCOECT |
CHANGE D655
656 657 Pt No 264P374020 |
| Mitsubishi |
A srs B srs |
HUM BAR ON
CHROMA INT LOSS SIGNALS BLANK RASTER NO |
TUNER US Pt
No 295P397030 (
33B3STX 295P397040 ) |
| Mitsubishi |
A srs B srs |
LINE OP TR
SC |
CHANGE C906
47uF 50v ALSO CHANGE R961 ( VARIES
WITH MODEL )
IC950 |
| Mitsubishi |
A srs B srs |
LOSS OF
EEPROM DATA NO TEXT NO NICAM NO RASTER COR |
FIT KIT Pt
No IC702-KIT |
| Mitsubishi |
A srs B srs |
RANDOM DOT
PATTERN NO OSD POOR GREY SCALE |
Q710 Pt No
260P784050 |
| Mitsubishi |
AV srs |
FUSE Z951
FAILS |
UPRATED FROM
2A TO 3.15A Pt No 299P193030 |
| Mitsubishi |
AV1 M5 srs |
Memory keeps
getting corrupted . |
Change R213
, R214 and
( M5 - R746
) , ( AV1 -
R702 )
from 220R to 1K . On M5's only
( and if not already
done )
add a 5v6 ze |
| Mitsubishi |
AV1 srs |
RF
PATTERNING (
SIMILAR TO VIDEOCRYPT ) |
FIT RF LEAD
Pt No H24P001010 |
| Mitsubishi |
AV1 srs |
RGB OUTPUT
SC (
IC660 TEA5101B ) |
CHECK FOR
12v ON WIRE LINK TO PIN 2. IF MISSING OR LOW PICTURE WILL BE AWFUL AND A1
WILL NOT SET COECTLY. Q6E8 LEAKY. REPLA |
| Mitsubishi |
AV1 srs |
Tuning drift
. Fit previous mod if not done alread |
Change R120
, 121 (
56k )
to 18k ,
remove R736 (
22k ) and fit an 8k2
& 15k 1/6w R-Metal in series . Make sure AFT is ON . |
| Mitsubishi |
AV1 srs ( 2 |
POOR PICTURE
. |
CHANGE R521
FROM 82k TO 56k AND FIT ZENER DIODE KIT
, Pt No 264P45090 |
| Mitsubishi |
AV1 srs WITH
SAT |
BLANK RASTER
OSD OK. |
Z953 1.6A OC
DUE TO LNB SHORTED - UPRATE TO 3.15A Pt No 299P193030 |
| Mitsubishi |
C21M1BM M |
POPPING OR
MOTORBOATING NOISE FROM SPEAKER IN SBY |
CHECK Q951
AND Q952 AND DRIES AROUND R954 R974 & R985 JC 501-Q ,
Mitsubishi 260P543050 . 2SA950-Y ,
Mitsubishi 260P255040 |
| MITSUBISHI |
C21T7B |
FINE
HORIZONTAL LINES ON SCREEN |
REPLACE
FRAME IC951 IC**TDA8171 |
| Mitsubishi |
C21T7B |
FINE
HORIZONTAL LINES ON SCREEN |
REPLACE
FRAME IC951 |
| Mitsubishi |
C25A4STX Euro
4 |
Dead , Line
OP transistor SC. |
Replace C906
47uF 63v , R901 4R7 10W Q901 , IC901 , D907 , D908
( both RD3.OFB1 ) and
C975 47uF 63V. |
| MITSUBISHI |
C25C7B |
FRAME
COLLAPSE AND NO SOUND |
REPLACE
Z551, D507, AND IC551 |
| Mitsubishi |
C25C7B |
FRAME
COLLAPSE AND NO SOUND |
REPLACE
Z551, D507, AND IC551 |
| MITSUBISHI |
C25C7B |
INT NO GREEN
LOOKS LIKE CRT |
REPLACE
IC660 ON CRT BASE |
| Mitsubishi |
C25C7B |
INT NO GREEN
LOOKS LIKE CRT |
REPLACE
IC660 ON CRT BASE |
| MITSUBISHI |
C25D7B |
NO SURROUND
SOUND |
SELECT
SPECIAL MENU,ENSURE "STANDARD TV" IS "OFF" SWITCH OFF
FOR 30 SECS |
| Mitsubishi |
C25D7B |
NO SURROUND
SOUND |
SELECT
SPECIAL MENU,ENSURE "STANDARD TV" IS "OFF" SWITCH OFF
FOR 30 SECS |
| MITSUBISHI |
C28C7B |
NO SOUND |
FAULTY NICAM
PCB |
| Mitsubishi |
C28C7B |
NO SOUND |
FAULTY NICAM
PCB |
| Mitsubishi |
C28D7B |
No sound |
IC3A1 IC3A2
and IC3B1. It is always the
middle one that goes s/c
and blows Z902 which
then removes the 28v supply to
these ICs.
You can
check which
one is
s/c by unsoldering pin
9 of each ic
one at a time and the check for
s/c across PLUG DE
which is the 28v supply |
| Mitsubishi |
C37C1STX |
Pic in pic
in black & white |
Q608
JC501Q,R on main pcb s/c |
| Mitsubishi |
C37C1STX |
Purity int |
CRT faulty -
loose shadowmask - replace crt - not
a task to be taken lightly! |
| Mitsubishi |
CM21M5BT |
dead |
Q901, R991,
IC901, D909, C914 & Q552 replaced. A BU 508DF or BU2506DF works in
place of BU2506DX Q552 |
| Mitsubishi |
CP142 |
Frame -
jitter & intermittent roll. |
Q431 , Q432
( 2SC711A ) |
| Mitsubishi |
CP1424B |
Vertical
ringing on left hand side of screen. |
Poor earth
connection to C905 ( 33uf )
in PSU. |
| Mitsubishi |
CT1447BM |
Dead |
IC901
STR44115, D906 (RG2) protection diode, R901 (4r7/7W) and C921 (47µF/50V). |
| Mitsubishi |
CT14MS1BM |
Intermittent
field jitter . |
Dryjoint at
R461. |
| Mitsubishi |
CT14MS1BM |
pic shifted
to right |
dry joint
R527 near lopt |
| Mitsubishi |
CT14MS1TX |
Won't tune
or store - pic blacks out when receiving RC command |
IC702
X24C04P EEPROM |
| Mitsubishi |
CT14MV1B |
Dead |
D6313-6
mains rects s/c, R3337 2R o/c, Tr7330 s/c, D6332 & D6337 s/c, IC7310
MC44603 also replaced & R3338 39R fusible o/c |
| Mitsubishi |
CT1525TX |
Dead with
squeal |
LOPTr
2SD1877 leaky - no other fault found (ON sw on front) |
| Mitsubishi |
CT1535TX |
stuck in st/by
- red light only |
Replace
STR54041 - only works properly with Mitsi version |
| Mitsubishi |
CT15M1TX |
Field
collapse - partial or total |
R563 0R82
o/c |
| Mitsubishi |
CT15MS1TX |
Low sound
aft being in st/by |
EPROM IC702
changed |
| Mitsubishi |
CT15MS1TX |
No sound/pic
all ht volts ok |
IC702 X24C04
eeprom replaced |
| Mitsubishi |
CT186 |
No
luminance. |
Q231 ( 2SC2236 ) 12v
reg. |
| Mitsubishi |
CT1905BM |
SBY LIGHT ON
, POWER SUPP RUNNING BUT DEAD
. NO LIN |
C501 , 100mfd , 25v
ON SIGNALS PCB |
| Mitsubishi |
CT2004B |
Frame -
height varing. |
VR401 ,
IC401 ( HA11414 ) , F572 high. |
| Mitsubishi |
CT2004B |
Frame - int
height. |
VR401 ,
IC401 ( HA11414 ) , F572 high. |
| Mitsubishi |
CT2023B |
Dead / int
dead |
Dry joints
line dr tfmr & R581 |
| Mitsubishi |
CT2027TX |
Int or no
colour. |
D209 ( 1S2076 ) check
by replacement. |
| Mitsubishi |
CT2027TX |
Sound - int
or no sound. |
High res
connection on IC351 holder. |
| Mitsubishi |
CT2101 |
Poor remote
operation. |
Filter coil
L992 replace with Mod type. |
| Mitsubishi |
CT2101 |
Smelly
smoke. |
|
| Mitsubishi |
CT2101T |
Blank raster
& no sound. |
R178 o/c ,
or o/c print between R178 & Q241. |
| Mitsubishi |
CT2101T |
No sound
& blank raster. |
R178 o/c ,
or o/c print between R178 & Q241. |
| Mitsubishi |
CT2101TX |
No pic - no
htrs crt |
R670 on crt
base dry joints |
| Mitsubishi |
CT2101TX |
st/by only |
ht low at
37v. C910 & 911 1µ 50v |
| Mitsubishi |
CT2117BM |
Col cycles
thro' auto grey scale at sw on with flashing lines |
Caused by
High HT - C911 33µ 50v, C910 33µ 50v & C913 100µ all hi esr |
| Mitsubishi |
CT2124BM |
Dead |
C964 100µ50v
o/c |
| Mitsubishi |
CT2124BM |
Loss of
tuning memory |
check IC702
for 5v at pin1 & -30v at pin 2. If missing check back to psu, if ok
replace chip. |
| MITSUBISHI |
CT2124BM |
NOT
SWITCHING ON FROM COLD |
REPLACE C964
100MFD50V |
| Mitsubishi |
CT2124BM |
NOT
SWITCHING ON FROM COLD |
REPLACE C964 |
| Mitsubishi |
CT2125TX |
Dead -
standby light flashing. |
HT @ 35v ,
D961 ( 6.2v zener ) leaky. |
| Mitsubishi |
CT2125TX |
Dead. |
D909 ( 3v
zener ) s/c. |
| Mitsubishi |
CT2125TX |
Int blowing
line transistor. |
STR54041 ,
clean & resolder pins of line driver transformer. |
| Mitsubishi |
CT2125TX |
Large black
square int covers screen, floats left or right & int poor contrast |
C959 100µ
25v hi esr causing low 5v supply from reg - also check C964 10µ 50v, C962
100µ 50v, C905 470µ 25v |
| Mitsubishi |
CT2125TX |
No sound
mute. |
D361 (
1N4148 ) |
| Mitsubishi |
CT2125TX |
No video |
Z951 630ma
fusible link in 8.5v line on psu |
| MITSUBISHI |
CT2125TX |
SLIGHTLY OFF
TUNE |
REPLACE
IC101 |
| Mitsubishi |
CT2125TX |
SLIGHTLY OFF
TUNE |
REPLACE
IC101 |
| Mitsubishi |
CT2125TX |
Sound - will
not tune right down or mute. |
D361 ( 1N4148 ) leaky. |
| Mitsubishi |
CT2125TX |
Sound wont
go off |
Pin 4 audio
chip hi at 2.3v (0.3v) - D361 1N4001 leaky |
| Mitsubishi |
CT2125TX |
user
settings wont store |
minus30v pin
2 eeprom IC702 low. C962 leaky also check other electros |
| Mitsubishi |
CT2146T |
When
replacing LOPTx with Konig type |
If width is
narrow after replacement of trfmr & tuning cap - refit orig cap |
| Mitsubishi |
CT2153 CT2155 |
GHOSTING
RINGING OR INT PIC |
CHECK FOR
DRYS NEAR SAW FILTER L4 L5 OR
FIT MOD KIT AFT1 |
| Mitsubishi |
CT2153STX |
No chan or
analogue value store |
Check pin 2
IC702 EEPROM chip. If not 30v then check C962 100µ 50v |
| Mitsubishi |
CT2153STX |
NO GREEN
ANALOGUE DISPLAY |
FRONT MICRO
ic.701 |
| Mitsubishi |
CT2155 |
Ghosting or
ringing. |
Drys around
the SAW filter or coils L4/5 , if not mod kit AFT1 mits |
| Mitsubishi |
CT2155 |
Int blank
raster. |
Drys around
the SAW filter or coils L4/5 , if not mod kit AFT1 mits |
| Mitsubishi |
CT2155STX |
herringbone
pattern |
C920 470µ
25v |
| Mitsubishi |
CT2155STX |
Herringbone
patterning |
Check dry
joints IF module, or caps around 12v reg IC902 & caps in psu pri |
| Mitsubishi |
CT2155STX
CT215 |
PATTERNING
ON PIC FROM COLD |
C920 ( 470uF )
C925 ( 10uF )
& D/J around IC902 |
| Mitsubishi |
CT21A2 |
WHINE ON
NICAM RECEPTION ONLY |
LINK C3346
& C3342 CATHODES |
| Mitsubishi |
CT21A2STX |
Dead - Q901
s/c. |
Fit mod kit
( wVe 77901 ) R901 , D908 , Q901 , C908 to 2700pf , C966. |
| Mitsubishi |
CT21A2STX etc |
Dead - LOPTr
Q522 s/c |
C905
(470µF, 35V), C906 (47µF, 50V), C909 (2.2µF, 50V) and C920 (100µF,
25V).Note that the transistor type varies with screen size, With a 21in.
tube it's type
2SD1877, part no, 260P606010; with a 25in, tube it's type 2SD1878 (part
no, 260P607010)
while with a 29in. CRT it's type 2SD1879 (part no. 260P608010), |
| Mitsubishi |
CT21A3STX |
SOUND MUTES
INT |
Q1A1 ON DET
PCB Pt No 260P543050 |
| MITSUBISHI |
CT21A5STX |
PATTERN ON
SCREEN |
REPLACE C957
AND C959 |
| Mitsubishi |
CT21A5STX |
PATTERN ON
SCREEN |
REPLACE C957
AND C959 |
| Mitsubishi |
CT21A5STX |
Slow start
up |
C906 47µ
50v hi esr |
| Mitsubishi |
CT21AV1 CT25AV1 |
Failure of
Q552 |
Order &
fit AVM5KIT |
| Mitsubishi |
CT21AV1
CT25AV1 |
Tuning drift
mainly at top end of band |
Add ( 180K ) &
Diode ( IN4148 )
in series cathode of diode to 5V pin 6 Tuner & res to Tuning
Voltage line pin 2 |
| Mitsubishi |
CT21AV1BS |
col level
int |
Q704 JC501
blanking tr on main pcb |
| Mitsubishi |
CT21AV1BS |
Dead |
All psu o/ps
ok but no line drive - IC ST24C08 memory IC |
| Mitsubishi |
CT21AV1BS |
St/by only |
C955 2200µ
in PSU sec |
| Mitsubishi |
CT21AV1BS |
St/by only |
C955 2200µ sec psu hi esr |
| Mitsubishi |
CT21M1BM |
Int stuck in
standby. |
Drys on
CF701 Xtal , on/around IC701. |
| Mitsubishi |
CT21M1BM |
RED LED LIT
BUT WONT COME ON |
DRY JOINTS
ON CF701 4Mhz
CRYSTAL ON PINS 28 AND
29 IC701 |
| Mitsubishi |
CT21M1BM CT25M1 |
POPPING
NOISE IN STBY WORKS OK WHEN ON |
Q951 Q952 OR
DRYS ON CONNECTOR PB ,
R954 ,
R974 ,
R985 |
| Mitsubishi |
CT21M1TX |
Field chip
int blows |
C909 2µ2 in
psu int causing excess HT |
| Mitsubishi |
CT21M1TX |
STARTS +
SHUTS DOWN IMMEDIATELY |
OPTOCOUPLER
PC951 OR D905 , R905 |
| Mitsubishi |
CT21M1TX |
Unstable pic
on dark scenes |
C906 47µ
25v in psu |
| Mitsubishi |
CT21M1TX |
Unstable pic
when cold |
C905 470µ
25v in pri psu |
| Mitsubishi |
CT21M3STX |
LOW HT |
Q953 JC501
Pt No 260P543050 |
| Mitsubishi |
CT21M3TX |
No signals |
R702 22k in
33v line o/c |
| Mitsubishi |
CT21M3TX |
No store
tune & r/c responses spurious |
X24C04P
eeprom & check caps in psu - used SDA2516 in lieu |
| Mitsubishi |
CT21M5B |
Failure of
Q552 |
Order &
fit AVM5KIT |
| Mitsubishi |
CT21M5B |
Under very
poor signal conditions "Herringbone" pa |
Fit
specially screened RF lead
between VCR & TV PtNo H24P001010 |
| Mitsubishi |
CT21M5B CT25M5B |
Tuning drift
mainly at top end of band |
Add ( 180K ) &
Diode ( IN4148 )
in series cathode of diode to 5V pin 6 Tuner & res to Tuning
Voltage line pin 2 |
| MITSUBISHI |
CT21M5BT |
DEAD OR INT
START UP |
CHECK R704
FOR O/C SOMETIMES MARKED R703 ON PCB |
| Mitsubishi |
CT21M5BT |
DEAD OR INT
START UP |
CHECK R704
FOR O/C |
