TV
Repair Database
|
Cascade |
TV510 |
BLOWS LINE OP TRANSISTOR AT
SWITCH ON |
VR901 , ZD901 , ZD902 |
|
Cascade |
TV510 |
Blows LOPTr at or shortly
aft sw on |
HT supply high until warmed
up (should be 112v) - VR901 HT pot |
|
Cascade |
TV510 |
St/by only |
HT at lop tr = 125v (112v);
C909 47µ 63v, R414 12R 2w o/c; ZD401 12v zener s/c |
|
Cascade |
TV511 |
Tripping |
Sparking between scan coils
- replaced & fop chip AN5521 |
|
Cascade |
TV511T |
Dist sound |
Tweak reqd on sound trap
coil |
|
Cascade |
TV511T |
Trips at sw on with crack -
high HT |
C909 47µ ZD402 12v zener
s/c & R422 o/c |
|
Casio |
TV100 |
Dead - Fuse FU100 (1A) o/c |
LCD backlight inverter trs
Q901/2 s/c; caused by s/c turns in pri winding of inverter tfmr - can be
rewound with care |
|
Casio |
TV1400 |
int power |
broken print by connector |
|
Cathay |
3501B |
Lack of width & burning
smell |
Dry joints at line dr tr
Q110 |
|
Cathay |
CTV3000 |
dead |
o/c mains sw & R504
150k o/c |
|
Cathay |
CTV3000 |
Dead |
R504 150k o/c |
|
Cathay |
CTV3000 |
Dead - no results. |
R504 ( 150k ) o/c. |
|
Cathay |
CTV3000 |
Hum bar |
HT smoothing cap replaced |
|
Cathay |
CTV3000 |
Hum Bar |
C507 100µ 400v |
|
Cathay |
CTV3000 |
Line drift when warm |
C232 connected to pin 33 of
TA7698A faulty |
|
Cathay |
CTV3000 |
Shutdown - Intermittent. |
Check for break in print
from D301 to LOPTX. |
|
Cathay |
CTV3505 |
Excessive blue. |
C503 leaky on CRT base. |
|
Cathay |
CTV3505 |
No line drive. |
L404 o/c. |
|
Cathay |
CTV3505 |
Red raster with flyback
lines . |
C509 ( 330pf ) leaky
on CRT PCB. |
|
Cathay |
TV2600 |
Int dead for first 10 mins |
12v reg faulty - used
TIP32A |
|
Cathay |
TV2610 |
L501 resistor smoking |
TDA4503 supply feed safety
res o/c - 1R5 |
|
Cathay |
TV2610 |
Line collapse - sound ok |
Big boost cap 1µ8 leaky |
|
Century |
|
No pic |
o/c resistor in A1 biasing
network |
|
Century |
|
To do a factory reset |
Press
"P/C" on TV & "Power On" together |
|
Contec |
CTV |
Dead. |
R812 ( 150k ) o/c. |
|
Contec |
KT5145 |
Dead - fuse's ok. |
Fuse ok - R504
( 330k ) o/c. |
|
Contec |
KT8135 |
Bright pic with fb lines |
R406 A1 control no effect -
R474 390k on crt base o/c |
|
Contec |
KT8135 |
dead |
R504 68k in psu o/c |
|
Contec |
KT8135 |
Dead |
R501, R502 330k & R503
1M faulty |
|
Contec |
KT8135 |
Dead - fuse's ok. |
Fuse ok - R501 or R502
( both 330k ) o/c. |
|
Contec |
KT8135 |
Field lin problem |
C336 220µ 50v |
|
Contec |
KT8135 |
No luminance. |
Poor plug connection for
luma on CRT base panel. |
|
Contec |
KT8135 |
Snowy pic |
SAWF int or dry jointed |
|
Contec |
KT8250 |
dead - chan display and
relay click present |
R504 330k in psu o/c |
|
Contec |
KTN3732 |
Dist sound/low vol |
R125 36k o/c by af o/p tfmr |
|
Co-Op |
63 Bush |
Dead. |
4D14. |
|
Crown |
2894 |
Int field lin/bounce when
heated |
12v at ZD402 low due to
R435 0R68 risen in value |
|
Crown |
11AK08 |
dead |
R809 0R47 o/c, Chopper tfmr
TR802 faulty |
|
Crown |
11AK08 |
Dead with R809 0R47 in psu
burnt |
Usually caused by chopper
tfmr TR801 s/c turns. D810 26 & 12v supply diode s/c. HT high at 126v
(110v). R805 330k 1w o/c. |
|
Crown |
14CX25 |
LOPTr fails |
LOP tuning cap 0.0022µ 2kv
or C709/710 dry joints |
|
Crown |
14CX25 |
No colour |
Q311 2SC65Y burst amp o/c |
|
Crown |
2196 |
Dead. |
Check/Replace R108 220K Ohm
& R109 330K Ohm. |
|
Crown |
CPRP14 |
Dead - Chopper FET 5N90 s/c |
R101
5R6 5w surge lim o/c, TDA4605 IC101, R108 220k, R109 330k o/c |
|
Crown |
CR5014 |
Dead - Chopper tr BUT11AF
Q101 s/c |
R121 3R3 ½w fusible o/c -
D108 dry joints |
|
Crown |
CRP14T SM1 Mono |
Stuck in standby. |
R599 2k 5watt in PSU o/c ,
check Q579. |
|
Crown |
CRP21 |
Child lock removal |
s/c pins 4 & 17 of R/C.
Press 'clear' then 'pass'. S/C pins again twice. To clear press 'clear'. |
|
Crown |
CRP21T |
dead |
R599 2k 5w - replace Q579
too |
|
Crown |
CRP21T |
dead |
Q101 BUZ77 FET chopper s/c,
R101 5R6 5w o/c, R108 220k, R109 330k hi res. Also check chopper tfmr for
leaky feedback windings + TDA4605 |
|
Crown |
CRP21T |
Dead Q101 PSU Chopper s/c |
R108 220k & R109 330k
hi res |
|
Crown |
CRP21T |
int dead |
2SC1573A line driver Q579
(may check ok) |
|
Crown |
CRP21T |
Pass Code - resetting |
open hset if SAA3004P s/c
pins 2+18; if KS51900-43 or OHS2015DN s/c pins 18 + D6; if GMS30150 9514
s/c pins 4&17. Sw on tv, press chan button so PASS displayed, insert
R/C batts & point at tv. PASS CLEAR appears on tv. Remove R/C s/c to
end set up. |
|
Crown |
CRP21T SM1 Mono |
Stuck in standby. |
R599 2k 5watt in PSU o/c ,
check Q579. |
|
Crown |
CRP25NT |
E/W corr faulty |
Q579 |
|
Crown |
CRV37 |
Dead |
Q801 R805 R803 R809(.47 OHM
FUSIBLE) IC 801 |
|
Crown |
CRV37 |
Tripping |
Chopper tfmr |
|
Crown |
CRV47 |
Dead |
R809 0R47 o/c, Chopper tfmr
s/c under load tho' measured
ok |
|
Crown |
CTF14R |
St/by only - LED lit |
R521 100k near HT sw trs |
|
Crown |
CTV9528NFT |
Dead with TR15 S2000N S/C |
Replace S2000N and C102
100ufd which was down to 20ufd |
|
Crown |
CTV9528NFT |
Green 'tubey' picture |
R28 68K on tube base |
|
Crown |
CTZ9002R |
st/by only |
Pri HT at chopper tr - R320
120k 1/4w in psu o/c |
|
Crown |
CTZ9009R |
E/W fault & width
varies |
Scan coils |
