TV
Repair Database
|
KB |
ATX6424 |
TEXT SCREEN COVERED IN Ê#Ë
SYMBOLS |
HCF4001 IC ON TEXT PCB |
|
KENWOOD |
KM2900M |
INT THERMAL
CUT-OUT CUTS IN |
CHECK IMPELLER IS NOT
SLIPPING ON FAN MOTOR SHAFT IF IT IS GLUE AND REFIT |
|
KENWOOD |
KM3501T |
NO POWER |
CHECK RF SUPPRESSOR BETWEEN
HV CAP AND MAGNETRON FOR DRY JOINTS |
|
Kioto |
FD6943 |
Dead - Lop tr s/c |
C910 10µ 50v, C909 47µ
25v (sounds like an Onwa) |
|
Korting |
41525 |
Won't tune above chan 32 or
store channels |
Low 30v tuning supply -
C1039 47µ 63v in LOP supply o/c |
|
Korting |
Hybrid |
No blue. |
R173 ( 1k5 ) o/c. |
|
Korting |
Hybrid |
Sound - unmodulated. |
R608 , C751. |
| LG |
CF28C22F etc |
Field collapse |
Fit mod kit KITPC33J (7 parts inc) |
|
LG |
Various |
Modifying R/C to access
service modes |
There is a service remote
available but if you have a
remote which uses an SAA3010T IC , simply connect a tact switch between
pins 1 & 11 to access the service mode . |
|
Lloytron |
T142C |
Int line drift |
Dry joints pins of line
driver trfmr T201 |
|
Lloytron |
|
No sound or picture. |
Q208 12v reg o/c can use a
TIP41. |
|
Loewe |
ART1 ART1 |
East west. |
C586 ( 3 , 3nf ) |
|
Loewe |
M124 |
Bottom foldover |
C581 47µ 25v |
|
Loewe |
M124 |
Int weak contrast |
dry joints front controls
& pcb |
|
Loewe |
M124 |
Lack of height |
dry joints field o/p chip
& height pot |
|
Loewe |
M124 |
No cold start |
C624 100µ, C638 1µ |
|
Loewe |
M124 |
Small, flat pic with non-lin
field |
C652, 653 47µ 250v |
|
Loewe |
MS56 |
Startup - no sound or
picture. |
R534 ( 3.3R )
o/c , check C638 ( 1uf ) |
|
Loewe |
MS56 |
This set's picture was
marred by very severe Venet |
1k LZ AMP preset P323 had
gone open-circuit. |
|
Loewe |
MS56 C8001 |
Stuck in standby. |
R534 ( 3.3R )
o/c , T534 , C534 (
47uf ) |
|
Loewe |
Profile T28 |
Dead - Fuse S611 1.6A blown |
R614 degauss positor |
|
Loewe
Opta |
66450 |
SLOW TO SWITCH ON |
C671 , C673
( LOW
) |
|
Loewe
Opta |
ARTS35 66472 |
SOUND MOTORBOATS WHEN COLD |
C671 1000uF 16v
ALSO C675 |
|
Loewe
Opta |
C8000 |
WHISTLES + HIGH HT |
C638 |
|
Loewe
Opta |
C8001 |
PICTURE NAOW + TUBE LOOKS
POOR HT LOW NOT 142v B |
C652 47uF 250v |
|
Loewe
Opta |
MS124 |
POOR FIELD LIN |
C581 47uF 63v |
|
Loewe
Opta |
MS56 C8001 |
Dead. |
LOPT SC , R583 OC 22R
, IC1581 SC TDA4950 |
|
Loewe
Opta |
MS56 C8001 |
DEAD STBY LED LIGHT R534
LINE DRIVER FEED OC |
REPLACE R534 3R3
T534 C534 |
|
Loewe
Opta |
PROFI S28 C8001 |
NO LINE DRIVE |
T534 SC USE TIP41 |
| Loewe-Opta |
ME26/Chassis110C8 |
East-West. Excessive width, won't adjust. |
Change L573. Seemed to be OK visually. |
| Loewe-Opta |
ME26/Chassis110C8 |
East-West. Excessive width, won't adjust. |
Change L573. Seemed to be OK visually. |
| Loewe-Opta |
ME26/Chassis110C8 |
Very int. Field collapse, white line in the center of
screen for a few seconds, and then black screen with no sound. |
When the problem occurs, make continuity check between pin
12 of the yoke plug and pin6 of vertical IC. If open, fit a piece of wire. |
| Loewe-Opta |
ME26/Chassis110C8 |
Very int. Field collapse, white line in the center of
screen for a few seconds, and then black screen with no sound. |
When the problem occurs, make continuity check between pin
12 of the yoke plug and pin6 of vertical IC. If open, fit a piece of wire. |
| Loewe-Opta |
ME26/Chassis110C8 |
Won't start, goes to Stby. Hor driver T541 Sced, supply
resistor R503 oc. After replacement, It was Sced again. |
Change C546 0,33uF/250V located in front of the LOPT
transistor. Also check/replace C503 22uF cap. |
| Loewe-Opta |
ME26/Chassis110C8 |
Won't start, goes to Stby. Hor driver T541 Sced, supply
resistor R503 oc. After replacement, It was Sced again. |
Change C546 0,33uF/250V located in front of the LOPT
transistor. Also check/replace C503 22uF cap. |
|
Logik |
1401 TLG0101 |
No frame. |
R313 ( 8.2ohm )
o/c , Q310 , Q301 (
2SA940/2SC2073 ) . |
|
Logik |
4090 TX90 |
No colour |
D103 ( BAV20 ) connected
to pins 19 &23 of decoder IC. |
|
Logik |
4090 TX90 |
No colour with faint blue
cast. |
C157 ( 22nf ) leaky
on pin 18 of IC103. |
|
Logik |
4090 TX90 |
No colour. |
C157 , C159 ( 22nf )
o/c , D103 high or dry jointed. |
|
Logik |
4090 TX90 |
No sync. |
C125 ( 2.7nf )
, C129 ( 68nf ) |
|
Logik |
4094 TX95 |
Tuning - no tuning. |
R56 2.4k res o/c ,
IC 902 ( M293B1 ) on
side board. |
|
Logik |
4294 TX |
Sound - low or distorted. |
Adj coil next to sound o/p
IC |
|
Logik |
4298 TX100 |
Dead. |
D15 ( BY299 ) in
psu s/c. |
|
Logik |
4298 TX100 |
Fast tripping. |
LOPTX |
|
Logik |
4298 TX100 |
Frame scan distorted. |
IC TDA3651 frame IC. |
|
Logik |
TX90 |
Snowy picture - channels
1-8 not storing. |
IC902 ( M293B1 ) |
|
Lowe |
66472 |
Sound
- motorboating when sw on |
C671 1000µ 16v & C675
in 7.5v supply |
|
Lowe |
C8001 |
Dead - LOP stage not
working |
T534 BD137 s/c b-e;
upgraded to a TIP41C as original ran hot |
|
Lowe |
C8001 |
E-W faulty |
R583 22R & IC1581
TDA4950 |
|
Lowe |
C9000 |
Dead |
fusible link R504 o/c &
315mA fuse in LOP o/c - LOPTx |
|
Lowe |
C9000 |
Field - lack of height |
27v supply low, C656 2200µ35v
& T658 BD139 |
|
Lowe |
Concept 55/63/70 |
Dead |
Line dr tr T525 BD139 leaky
& 3R3 resistor in 27v line o/c - also check R666 0R22 safety res |
|
Lowe |
M124 C8500 |
Dead with 1.6A fuse blown |
TDA4601 chopper chip s/c,
small blue therm in start up cct, T539 BU508D LOPTr hi res |
|
Lowe |
M124 C8500 |
High HT (should be 142v) |
C652 47µ 250v ; C653 47µ |
|
Lowe |
M124 C8500 |
Pic jitter & /or hum on
pic with chan display flickering, sound goes low & controls not
working int |
Check for dry joints in psu,
front pcb & IR receiver |
|
Lowe |
MS56 C8001 |
Dead - st/by only |
Line dr Tr supply res R534
3R3 o/c also check C534 47µ |
|
Lowe |
MS56 C8001 |
Dead after smelling hot |
C652 47µ 250v HT cap
leaky/ burnt conns |
|
Lowe |
MS56 C8001 |
High HT (should be 142v) |
C638 1µ |
|
Lowe |
MS56 C8001 |
Venetian blinds |
P323 1k LZ AMP preset o/c |
|
Lowe |
Profi T28 |
Poor start up from cold |
C626 100µ in start up cct
for TDA4601 |
|
Lowe
Opta |
C8001 |
High ht and LOPTx arcing
(142v normal) |
replace loptx & C624,
626, C641 100µ, C638 1µ, etc etc |
|
Lowe
Opta |
C8001 |
No sound |
Mute line held low - D496-9
diodes 1N4148 replaced |
