TV
Repair Database
|
HITACHI |
C2564N |
FRAME COLLAPSE |
REPLACE FRAME IC AND C604
IC**TDA8178, 100MFD63V |
|
Hitachi |
C2564N |
FRAME COLLAPSE |
REPLACE FRAME IC AND C604 |
|
Hitachi |
C2564TN |
Dead - s/c lop tr &/or
e/w mod diode |
Check L651 e/w coil for
drys also L650 & Q651/652 |
|
HITACHI |
C2564TN |
INT EXCESSIVE WIDTH SEEMS
LIKE A DRY JOINT |
REPLACE Q752 |
|
Hitachi |
C2564TN |
INT EXCESSIVE WIDTH SEEMS
LIKE A DRY JOINT |
REPLACE Q752 |
|
Hitachi |
C2564TN |
lack of height, cramp &
int field collapse |
dry joints IC601 TDA8178
also pin 2 low volts (16 instead of 27v) R609 1R hi res |
|
Hitachi |
C2564TN G100 |
Tripping |
Dis plug PL702 &
connect bulb between plugs orange lead & chassis to check psu. HT
should be 140v. If ok check lop stage - D704 BY228 & dry joints L650 |
| Hitachi |
C2565TN |
Int shut down caused by high HT |
Change R952 68k in psu to reduce HT to normal 144v |
|
Hitachi |
C2565TN |
No pic with flyback lines |
IC1410 faulty |
|
Hitachi |
C2565TN |
SET SHUTS DOWN INT. ON LOSS
OF LINE SYNC OR IF VCR |
HT TOO HIGH
( NOT 144v ) R952 68k
HIGH |
|
Hitachi |
C2565TN, C2574TN etc |
Trips under certain pic
conditions & on VCR playback |
R952 68k, R953 82k, R954
8k2 & check for dry joints |
|
Hitachi |
C2573TN |
Int shut down |
Mains smoothing cap int o/c |
|
Hitachi |
C2574TN |
Bouncing pic with lines aft
½ hr |
LA7838 filed ic & 2 x
elect caps in vert o/p cct |
|
Hitachi |
C2574TN |
EW IC IC751 and D706
failed. |
R610 dry - on signal panel |
| Hitachi |
C2574TN |
Faint purple band thro' pic |
Ringing in chroma delay
line - delay line faulty |
|
HITACHI |
C2574TN/2874TN |
SET SHUTS DOWN WITH ONLY
NICAM LIGHTS ON |
REPLACE R952, R953 AND R954
IN POWER SUPPLY 68K, 82K AND 8.2K |
|
Hitachi |
C2574TN/2874TN |
SET SHUTS DOWN WITH ONLY
NICAM LIGHTS ON |
REPLACE R952, R953 AND R954
IN POWER SUPPLY |
|
Hitachi |
C2574TNY |
Bouncing pic when heated |
R952 68k hi res |
|
Hitachi |
C2576TN |
St/by only - stuck in prot
mode |
volts Q958 gate 0.7v = prot
mode. Link out C932 to disable. Audio o/p chip IC4500 split & faulty |
|
Hitachi |
C25P759 |
Dead or Int dead |
Check C524 C525 C527 C528
C531 C614 C617 for D/J also TR130 IC130 IC140 & around Combi TX |
|
Hitachi |
C25P-818 |
Blank white screen |
C922 470µ 25v hi esr near
psu |
|
Hitachi |
C2808 |
Int lh chan sound |
C420 470µ spkr coupling
cap o/c |
|
Hitachi |
C28300 |
No luminance when switched
on after being left in st/by for a while |
SAA4981 IC1300 on 16:9 sub
panel |
|
Hitachi |
C28300,C2576TN etc A5 chassis |
Field lin & lines at
top of pic |
C725 33nF 400v |
|
Hitachi |
C28300,C2576TN etc A5 chassis |
Int trips & lines |
C719 4µ7 250v smoothing
cap for 200v in E-W corr & check joints T702 (under plastic strut)
& R950 68k near HT pot |
|
Hitachi |
C28300,C2576TN etc A5 chassis |
Red pic with fb lines |
R829 fusible on crt base
o/c (not shown on cct diag) |
|
Hitachi |
C2846 |
Field collapse |
IC601 (TA8427K) + 26v rail
supply R710 (2R0 safety) |
|
Hitachi |
C2846TN |
Field - lines at top of pic |
TA8427K field chip |
|
Hitachi |
C2846TN |
Model no displayed (factory
mode) |
Press both rec buttons on
hset, sw to st/by & then sw off at mains. Wait 30secs b4 sw back on. |
|
HITACHI |
C2846TN |
MODEL OF TV DISPLAYED ON
SCREEN |
PRESS BOTH RECORD BUTTONS
ON REMOTE SWITCH TO STANDBY THEN SWITCH OFF AT SET WAIT 30SECS THEN SWITCH
BACK ON |
|
Hitachi |
C2846TN |
MODEL OF TV DISPLAYED ON
SCREEN |
PRESS BOTH RECORD BUTTONS
ON REMOTE SWITCH TO STANDBY THEN SWITCH OFF AT SET WAIT 30SECS THEN SWITCH
BACK ON |
|
Hitachi |
C2846TN |
No sound (AV sound ok) |
IC002 24C04 memory chip |
|
Hitachi |
C2846TN |
Removing Code “C46TN”
from screen |
TV in factory set up mode -
Using RCU, press two VCR REC buttons together. The MENU will appear, then
switch to standby. Turn appliance back
on and prompt should have disappeared. |
|
Hitachi |
C2846TN |
Shuts down int for first
half hour |
Dry joints esp at R719/R718 |
|
Hitachi |
C2846TN |
St/by only |
IC952 dry joints |
|
Hitachi |
C2848TN |
Dead |
Check 138v HT if hi check
R950-2, Q703 gate = 3-4v (trip mode) Check for dry joints on R719 or Ics
950, 951,952 |
|
Hitachi |
C2848TN |
In factory set up mode -
C***48TN-311 displayed |
Remove R/C flap & press
tuning button. Then press Menu button & go to st/by |
|
Hitachi |
C2848TN |
No sound - sound psu
tripping |
Still trips with both audio
o/p chips dis'd - D9112 s/c |
|
Hitachi |
C2848TN |
no tuning or hi vol setting
(hotel mode) |
depress vol+/- whilst sw
on. Press 2 vcr buttons on r/c. Check for "H" in lower right of
menu. If pesent, delete using - /-- button. |
|
Hitachi |
C2858TN |
dead int for a few secs at
a time |
VR941 2k2, R941 100k - adj
HT to 157v |
|
Hitachi |
C2858TN |
Int dead between 1 & 3
secs |
Replace VR941 2k2, R941
100k, and set HT to 157v |
|
Hitachi |
C2862TN |
NO EW AND LOW WIDTH |
CH09 150nF OC |
|
Hitachi |
C2864TN |
Slow tripping/partial field
coll/blank raster/no sound |
R609 1R fusible o/c - also
replaced TDA8178 Field o/p IC as a precaution |
|
Hitachi |
C2864TNX |
Dead aft EHT rustle &
led single blink at sw on |
HT checked on dummy load at
170v (149v). Int set HT pot VR930; R509 1R 1/2w safety res by LOPTx o/c;
IC800 RGB o/p chip & C821 4µ7 250v faulty also. |
| Hitachi |
C2864TNZ |
Slow or no start up |
C909 470µ 25v |
| Hitachi |
C2874TH |
Rolling pic when warm |
FOP stage supply 4v high at
29v. R952 68k in HT sampling circuit hi res |
|
Hitachi |
C2874TN |
Field collapse - IC601 failed |
Check dry joints Q601/2/3 & R610. Also E-W chip &
10R safety res not marked on cct connected between L752 & diodes
D707/6 |
|
Hitachi |
C2874TN |
Field o/p chip IC601 LA7838
fails |
Check dry joints Q601/2/3
& R610 etc. Check IC751 (e/w corr) in psu |
|
Hitachi |
C2874TN |
Int E-W |
R751 across C758 on comp
side of pcb not soldered |
|
Hitachi |
C28P745VT Salora |
Field distortion when
heated |
Flyback boost diode D571
leaky |
|
Hitachi |
C28P759 |
NO PICTURE SMELLS OF
BURNING |
C525 DRY 2u2 100v
, IF NO EW ORDER BS208
MOD KIT FROM WVE |
|
Hitachi |
C28P759 |
No picture with burning
smell |
C525 2µ2 100v dry joint
& burning - replaced |
|
Hitachi |
C28P759 |
Width excessive |
TB526 BS208 EW driver s/c |
|
Hitachi |
C28P819 |
Dead |
MAINS SMOOTHING CAP 150uF
400v |
|
Hitachi |
C28WD2TN |
dotted vertical contours of
pic features |
C875 22µ 250v dry jointed |
|
Hitachi |
C28WD2TN |
Int start up then shuts
down 2 secs aft start up with greenish pic |
R809 560R ½w burnt out,
Q814 BF422 leaky |
|
Hitachi |
C2964TN |
No E-W & excess width |
IC601 TDA8350Q |
|
Hitachi |
C2976TN |
Dead - went off with a bang |
Quietly ticking noticed -
mains smoothing cap 200µ 400v o/c |
|
Hitachi |
C2976TN |
Int flyback lines on dark
scenes |
CRT int bad con on A1
electrode |
|
Hitachi |
C2976TN |
Pic shifted laterally with
ragged verts & arcing sound |
TDA8350Q |
|
Hitachi |
C2976TN |
To remove version no. from
screen |
Press ESC on the handset to
display the service mode menu Press Standby
Power back on whilst holding Vol+ and Vol- Without following the first two
steps the procedure did not work |
|
Hitachi |
C2976TN |
To remove version no. from
screen |
Press ESC on the handset to
display the service mode menu Press Standby
Power back on whilst holding Vol+ and Vol- Without following the first two
steps the procedure did not work |
|
Hitachi |
C8Q |
Balloooning pic on hi
brightness |
HT varies between 140-160v
- R941 100k ½w hi res |
| Hitachi |
CL1709 |
Does not start up. Overvoltage protection circuit active. |
Check replace R951/39K R953/47K and D952 Zener. |
| Hitachi |
CL1709 |
Does not start up. Overvoltage protection circuit active. |
Check replace R951/39K R953/47K and D952 Zener. |
| Hitachi |
CL2114 |
Goes to stby immediately after switch on. +B with no load
is 130V. Should be 115. |
Resistor 39K near +B adjustment pot has gone high to 48K.
To troubleshoot, overvoltage thyristor near to LOPT may be pulled off the
chassis. However be cautious with overvoltages! |
| Hitachi |
CL2114 |
Goes to stby immediately after switch on. +B with no load
is 130V. Should be 115. |
Resistor 39K near +B adjustment pot has gone high to 48K.
To troubleshoot, overvoltage thyristor near to LOPT may be pulled off the
chassis. However be cautious with overvoltages! |
|
Hitachi |
CL2524R |
Dead |
Replace LOPTr BU2508AF,
check R951, 952, 953, 954 &Q703 thy |
|
Hitachi |
CL2524R |
Lack of height with no adj |
TDA8362 |
|
Hitachi |
CL2864TA |
Dead except for flasing red
led |
D704 BY228 on lop sub panel
s/c |
|
Hitachi |
CL2864TA |
Hum on sound with pic
instability |
Replace C916, C942 &
C957 in psu |
| Hitachi |
CMT1459 |
Won't start. |
D761 located near LOPT Sced. |
| Hitachi |
CMT1459 |
Won't start. |
D761 located near LOPT Sced. |
|
Hitachi |
CMT2700 |
loss of field sync |
10µ cap on NTSC subpanel |
|
Hitachi |
CNP192 |
Colour intermittent. |
TR25 ( 2SA673 ) |
|
Hitachi |
CNP192 |
Dist sound when heated |
Audio o/p tr 2SC685A on
power panel |
|
Hitachi |
CNP192 |
Picture shifted to side. |
C707 , R709 , C711 , C736. |
|
Hitachi |
CNP300 |
Col unlocked |
TA7193(A)P decoder chip |
|
Hitachi |
CP2546TA |
St/by only |
smps ok, gate of thyr not
triggered & pin 17 IC001 hi. Should be hi then lo, to switch the 8, 12
and 5volts regulators on - dig tr DTC 144 leaky- holding pin 17 hi |
|
Hitachi |
CPT1455 |
chan display only |
Q902 |
|
Hitachi |
CPT1556 Salora L |
NO LUMINANCE |
LUMINANCE DELAY LINE OC |
| Hitachi |
CPT1558 |
Keyboard operation int |
RD54 820k between base/emitt
TD12 near keypad ribbon cable |
|
Hitachi |
CPT1646R |
Chan ind only |
FS901 o/c |
|
Hitachi |
CPT1646R |
No tuning memory |
reprogram memory ic |
| Hitachi |
CPT2050 |
Red chroma only - no G, B or lum |
470k in A1 pot divider o/c |
|
Hitachi |
CPT2050 SalJ |
Frame - height erratic -
going pink/green. |
IC TDA2653 frame IC. |
|
Hitachi |
CPT2060 SalJ |
Dead. |
Diac DB725 ( BR100 )
s/c , CB726 & CB712 (
4.7ufs ) |
|
Hitachi |
CPT2064 |
Dead - blown fuse F901. |
IC901 ( STR440 ) ,
Q781 ( 2SD898B ) s/c. |
|
Hitachi |
CPT2064 |
No remote operation. |
Checks ok on detector ,
IC3003 ( M58485P )
in Tv set. |
|
Hitachi |
CPT2064 |
R/C inoperative |
IC3003 M58485P |
|
Hitachi |
CPT2080 |
Field collapse - int |
FOP Tr Q651 2SD401A - also
check its partner Q651 2SD401A |
|
Hitachi |
CPT2082 |
Int buzz on sound |
Bad connection on plug
PL401 in audio sect |
|
Hitachi |
CPT2088 |
Long time to come on, no
front display, poor tuning with grainy pic, lack of height |
Check electrolytics in HT,
14v, 12v & 25v line |
|
Hitachi |
CPT210 |
Bright raster esp on rh
side with smearing |
200v supply to crt pcb low
due to C719 4µ7 250v o/c |
|
Hitachi |
CPT2158 |
blank raster & max
sound |
No 5v to micro - D911 dry
joint |
|
Hitachi |
CPT2158 NP85CQMk2 |
Poor pic - dark &
streaky |
ZD801 3v3 zener on crt base
leaky |
| Hitachi |
CPT2188 |
Int failure to start |
C604 1000µ o/c |
|
Hitachi |
CPT2188 |
No display or tuning |
CC107 220µ 16v by SAA1294
control chip |
|
Hitachi |
CPT2188 IPSALO |
INT WON'T START |
C604 1000uF 25v |
|
Hitachi |
CPT2188 IPSALO |
LINE TEARING
+ INT BLUE SCREEN |
PIN 13 ICB500 SHOULD BE 11v
IF NOT REPLACE TDA 2579 |
|
Hitachi |
CPT2198 |
Blank white raster |
C720 in RGB 200v supply |
|
HITACHI |
CPT2218 |
FIELD CRAMPING |
REPLACE C608 22MFD250V |
|
Hitachi |
CPT2218 |
FIELD CRAMPING |
REPLACE C608 22MFD250V |
|
Hitachi |
CPT2250 J |
No startup. |
R712. |
| Hitachi |
CPT2282 |
Dead aft degaussing therm blown |
Replace mains fuse & thermistor (P181 from CHS works) -
won't work without this dual role therm |
| Hitachi |
CPT2288DS |
St/by only |
No o/p from sw mode PSU as LL04 coil o/c |
|
Hitachi |
CPT2288DS |
Standby - LED on - dead. |
LL04 o/c - may be able to
unwind & refit. |
|
Hitachi |
CPT2476 |
Int power off |
Focus spark gap dirty &
int arcing |
|
Hitachi |
CPT2488 |
Blanked out pic apart from
strip at top & bottom - improves with heat |
C574 100µ 40v in field
timebase |
|
Hitachi |
CPT2488 Sal k |
BLANKED OUT PIC EXCEPT FOR
TOP AND BOTTOM OF SCR |
C574 100mfd , 40v |
|
Hitachi |
CPT2488 Sal K |
DEAD NO/LOW START UP 8.5v
ON PIN 8 LF0059 |
TRY DIAC OR TB541 BC557 |
|
Hitachi |
CPT2508 |
Dead |
Q901,IC901,R901,ZD901
4v7,D904,R913,C928 and C919. Also there was blown print between D904 and
ZD901. |
|
Hitachi |
CPT2508 |
Dead - Field coupling cap
C610 100µ 25v exploded |
Low res across 152v line
due to s/c between field & line scan coils |
|
Hitachi |
CPT2508 |
Tripping |
Replace C910 & 916 33µ
10v; C919 4n7 2kv; C927 2n2 2kv. Change C914 to 10µ, check C909 150µ
400v, R919, R920, R931 & R932 |
|
HITACHI |
CPT2589 |
FRAME COLLAPSE |
REPLACE R715 AND IC601 |
|
Hitachi |
CPT2589 |
FRAME COLLAPSE |
REPLACE R715 AND IC601 |
|
Hitachi |
CPT2598 |
Field coll |
R715 1R safety res, TDA3654
fop chip, D601 |
|
Hitachi |
CPT2598 |
No colour - ok on Txt |
Chroma delay line |
|
Hitachi |
CPT2598 |
Wavering picture with
colour
dropout which would randomly blank out to a blue
screen in short bursts. Occasionally there would
be no sound or vision at switch-on and only the
channel change working. |
Replace C933 (2,200uF 25V)
whose ESR
had risen to 27 and C932 (470uF 16V) whose ESR
had risen to 48. These two capacitors sit next to each
other between the delay line and a heat sink. They
were replaced with high temperature types. |
|
Hitachi |
CPT2650 Sal J |
Startup - Long time for
picture to come on. |
Incorrect grey-scale
setting. |
|
Hitachi |
CPT2655 |
Dead supply line low |
D508 in line stage |
|
Hitachi |
CPT2656 |
Bottom cramp - int |
Preset RTB573 470R |
|
Hitachi |
CPT2656 |
Dead - supply lines low
& chirp at sw off |
D508 BY228 in lop leaky |
|
Hitachi |
CPT2656 |
To tune in chans 1 -4 |
Enter service mode & sw
off bit 0 - the little dot |
|
Hitachi |
CPT2656 Sal J |
Bottom cramp - top widened
out. |
Linearity pot RTB573
( 470R ) |
|
Hitachi |
CPT2656 Sal L |
BLANK RASTER ,
NO SOUND . TDA4505 us . MAY HAVE TO |
, RB135 TO 470K , RB122
AND 123 TO 220K , RB110 TO
1.5M , CB130 TO 33pf ,
RB128 AND RB587 TO
3.3K. IF NO COLOUR AND LINE TWITCHI |
|
Hitachi |
CPT2656 Sal L |
Dead |
300v ACROSS C707 BUT NO
S2000AF COLL VOLTS R707 22ohm o/c T701 s/c |
|
Hitachi |
CPT2656 Sal L |
INT BOTTOM PART OF PICTURE
DISAPPEARS |
RTB573 470R PRESET INT OC |
|
Hitachi |
CPT2656 Sal L |
Int Negative pic |
Check jumper links on Text
PCB J33 |
|
Hitachi |
CPT2660 Sal J |
HIGH BRIGHTNESS AFTER FEW
MINUTES |
DRY JOINT METAL SCREEN CAN |
|
Hitachi |
CPT2808 |
Search tuning does not stop |
R936 10k hi res |
|
Hitachi |
CPT2888 |
NO PICTURE
, SOUND BUZZES FOR 10
- 30mins THEN OK |
CP37 U1 7v RESERVOIR OC |
|
Hitachi |
CPT5908 |
Dead or Int dead |
Check C524 C525 C527 C528
C531 C614 C617 for D/J also TR130 IC130 IC140 & around Combi TX |
|
Hitachi |
CPT6608 |
Dead or Int dead |
Check C524 C525 C527 C528
C531 C614 C617 for D/J also TR130 IC130 IC140 & around Combi TX |
|
Hitachi |
CS2552TA |
no cold start |
C622 470µ 16v |
|
Hitachi |
CT1709 |
No sigs or tuning |
No VT supply - ZD002 33v
zener faulty & 12k feed res o/c |
|
Hitachi |
CT2114TE |
Int goes to st/by with HT
present & fop ok |
Also int txt corrupt &
9v start up - SAA5296P/015 µ faulty |
|
Hitachi |
CTP2568 |
Int failed to come out of st/by |
1.2v memory battery on mains I/p panel |
|
Hitachi |
G10Q |
CRACKLING FROM SPKRS |
IC4010 INT OC |
|
Hitachi |
G10Q |
Dead apart from tripping squeal |
E-W coil L650 dry joint, F902 o/c & D704 leaky |
|
Hitachi |
G10Q |
Dead except for flashing st/by light |
No 330v at chopper tr as link FB910 dry joints (hidden
under glue) - also check FB911 |
|
Hitachi |
G10Q |
DEAD STBY LIGHT PULSING |
LINK FB910 & 911 DRY
UNDERNEATH GLUE |
|
Hitachi |
G10Q |
FAINT PURPLE BAND SHOWING
ON DARK SCENES |
DL50 DELAY LINE Pt No
2164051 |
|
Hitachi |
G10Q |
Field collapse |
Check C604 100µ 63v, R609 1R fusible & IC601 TDA8178 -
use correct type or you may get lines at top of pic |
|
Hitachi |
G10Q |
No Txt apart from page number display |
Adj data capture window in service mode |
|
Hitachi |
G10Q |
OSG corrupt & int loss of tuning |
Micro IC001 faulty - when upgrading micro, mods must be
done |
|
Hitachi |
G10Q |
Poor start or st/by only |
Dry joints IC952 (under plastic rail) |
|
Hitachi |
G10Q |
St/by LED pulsing |
OPTO1 CNX82 part no T548009 |
|
Hitachi |
G10Q |
To enter Service Mode |
Press
Vol + & - together whilst sw on from mains. Press the 2 VCR Rec
buttons on hset together twice - 'Tube' now displayed |
|
Hitachi |
G10Q |
Tripping |
Check F902 630mA fuse on LOP panel & dry joints &
IC80 heatsink on crt base |
|
Hitachi |
G10Q |
Tripping |
Check audio pcb by
disconnecting it |
|
Hitachi |
G10Q |
trips until heated |
C927 470µ & dry joints
12v reg IC921 |
|
Hitachi |
G10Q |
trips until heated |
ZD945 BZV10 - normally
reads o/c both ways |
