TV
Repair Database
|
Grundig |
1510 |
Dead - intermittent. |
Crack in print. |
|
Grundig |
7890 |
Loss
of 45v rail |
IC430 TDA8350Q |
|
Grundig |
8787 |
dead |
RU05 & RU15 resistors
sprung open & fuse VU09 o/c no other ff |
|
Grundig |
1000 series |
No power up |
TR540 BC847 in micro reset
circuitry. |
|
Grundig |
1001 series |
No green |
BC847 near to the Y/C proc
IC |
|
Grundig |
1002 series |
No colour |
ripple
on Pin 39 of IC800 the Y/C chip. Resoldering the components in this area
cured the fault even though nothing looked dry jointed. |
|
Grundig |
1003 series |
Field collapse |
HT feed R200 a 4R7, no
apparent reason for it's
failure. |
|
Grundig |
1004 series |
Excess Green |
sm cap C904 1n between base
and emitter of the o/p tr |
|
Grundig |
1510B |
Sound - intermittent or no
sound. |
Poor joints on speaker
wires. |
|
Grundig |
1510GB |
Dead. |
C863 leaky. |
|
Grundig |
1510GB |
Intermittent or no colour. |
R587. |
|
Grundig |
2275 |
LINE WOBBLE
, WORSE WHEN COLD |
C2731 ( 100uF
, 63V
) ON DEFLECTION PANEL |
|
Grundig |
2401 |
Tripping |
CHECK L-O-TRANS & L519 |
|
Grundig |
2401 |
TRIPS |
L519 SHORTED TURNS |
|
Grundig |
3022 |
No sound. |
Line osc IC. |
|
Grundig |
3402 |
Switching on problems -
Hum. |
Relay contacts jammed o/c. |
|
Grundig |
3500 Chassis |
No tuning
, check pins 13 , 15
of tuner/IF for tunin |
If stuck at 30v replace
SDA3202 and SDA2516 |
|
Grundig |
5010 |
Frame - int frame collapse
or bounce |
L447. |
|
Grundig |
55 245 |
BLOWS LOP. TRANSISTOR
( MAY RUN FOR SHORT
TIME. ) |
CHECK 220mfd BASE DRIVE |
|
Grundig |
6010 |
Tripping. |
LOPTX |
|
Grundig |
6100 |
No picture - sound ok. |
D2764 ( SKE2F1 ) o/c. |
|
Grundig |
6100 |
Tuning drift. |
Warped cabinet pushing onto
p/b unit. |
|
Grundig |
6210GB |
Int no colour. |
C861 , C863 leaky. |
|
Grundig |
63 - 270 |
LINE PHASE OFF TO RIGHT |
C 514 150 pf 1600v
( FEED FROM LOPT TO
PIN 10 OF DEFLECTION MODULE. ) |
|
Grundig |
6415 |
Loss of sync - int. |
IC TMS3755 IC on 'abstimm
baustein' module. |
|
Grundig |
6610GB |
Int no colour. |
C861 , C863 leaky. |
|
Grundig |
70 340 |
BLOWS P.SUPP |
CHECK C667 |
|
Grundig |
717 |
No raster - distorted
sound. |
DL701/703 C708/709. |
|
Grundig |
7400 |
Int loss of sound &
picture. |
DJ on IC681
( MC78M15CT ) 15v reg to IF strip. |
|
Grundig |
7400 |
No picture. |
D2751 on deflection module. |
|
Grundig |
80 |
Smeary picture -
intermittently. |
Luma delay line leaky. |
|
Grundig |
8240 |
Lack of blue. |
R1958 o/c. |
|
Grundig |
8610 |
Hum bar effect at centre
& width reduced. |
+D ( 36v ) supply
reservior cap. |
|
Grundig |
8632GB |
Blank screen - sound ok. |
DI1948. |
|
Grundig |
8632GB |
Intermittent colour. |
C861 , C863 leaky. |
|
Grundig |
8632GB |
Raster - int blank screen -
sound ok |
DI1948. |
|
Grundig |
8636 |
Bright line in centre over
picture. |
C468 ( 15u f , 25v ) |
|
Grundig |
9050 Project |
Raster - blank - int blank
raster. |
Cracks on main board left
of tuner/i.f can by hole. |
|
Grundig |
9050 Project |
Sound - int sound. |
Cracks on main board left
of tuner/i.f can by hole. |
|
Grundig |
A3106 |
No luminance. |
Dirty contact on pin 11 of
IC2594. |
|
Grundig |
CUC |
Dead - blowing BU208 &
TDA4600. |
R646 ( 270k ) ,
replace with carbon film type. |
| Grundig |
CUC 6360 / CUC 6361/ CUC 6365 |
Intermittent no picture, it
would fade out with the width getting smaller.
HT 150volts was down to 100volts. |
C672 100 MFD @ 250VW |
| Grundig |
CUC 6360 / CUC 6361/ CUC 6365 |
No picture, but HT / EHT
all ok, picture was blanked out. |
CT5066 BC858. This is a s.m.
device on the video processing pcb. It is on p22 of ic 5040. |
|
Grundig |
CUC120 |
Blank raster & muted
sound. |
Drys in IF unit try on pin
12 were 12v supply comes in. |
|
Grundig |
CUC120 |
Dead - BU208 s/c. |
Check for C633
( 100uf ) s/c
, R646 , replace C631. |
|
Grundig |
CUC120 |
Dead. |
C633 ( 100u f ) s/c. |
|
Grundig |
CUC120 |
FIELD FAULTS |
C2768 D2761 R2761 6R8 PRESETS OR TDA1770 |
|
Grundig |
CUC120 |
Frame collapse - sound ok. |
D2764 ( SKE2F1 ) o/c. |
|
Grundig |
CUC120 |
Frame distortion. |
IC TDA1770 if used , D2761
( SKE4G1/04 ) , R2761 (
6.8ohm , .75W ) |
|
Grundig |
CUC120 |
Int luminance |
C2527 0µ1 faulty |
|
Grundig |
CUC120 |
Interference at sides. |
IC TDA2595 sync/line osc
IC. |
|
Grundig |
CUC120 |
Intermittent going into
standby. |
Change R647 to ceramic. |
|
Grundig |
CUC120 |
Intermittent shut down. |
Dry joints on L631 off base
of chopper Tx. |
|
Grundig |
CUC120 |
Intermittent shut down. |
IC TDA4600 plus check drys
on L631 off base of chopper Tx. |
|
Grundig |
CUC120 |
Lack of frame at bottom
when cold. |
C2768 ( 100uf ) on
deflection PCB. |
|
Grundig |
CUC120 |
No cold start |
C626 reservoir cap o/c |
|
Grundig |
CUC120 |
No luminace. |
D2536 ( IN4148 ) leaky. |
|
Grundig |
CUC120 |
No picture - EHT &
sound ok. |
D2764 ( SKE2F1 ) o/c. |
|
Grundig |
CUC120 |
No sound |
C2408 1000µ s/c; R2408 o/c
3R9 on audio board |
|
Grundig |
CUC120 |
Startup - no start up. |
IC TDA4600 plus check drys
on L631 off base of chopper Tx. |
|
Grundig |
CUC120 |
Startup - takes a long time
to come on. |
C626 reservoir cap. |
|
Grundig |
CUC20/30 |
Blue screen only |
dry joints IC61050,
IC61060, & IC61040 regs |
|
Grundig |
CUC2000 |
line collapse |
could be o/c winding N
& L on Ipsalo tfmr |
|
Grundig |
CUC2030 |
Hor black & white lines
& no tuning |
Sound MSP chip faulty -
causing corruption to data lines |
|
Grundig |
CUC2030 |
Menu access & child
lock |
hold the vol+ button on the
remote and switch on the tv via
the on/ off switch.this results in the language menu coming up. if you
then press ok the set goes straight to auto tune mode. if you then press
text this stops auto tune and allows you access to all menus.entering the
code 7038 cancels lock? |
|
Grundig |
CUC220 |
Dead - intermittent. |
R646 ( 270k ) on
PSU. |
|
Grundig |
CUC220 |
Display - intermittent
incorrect channel disp |
IC663 ( 5v reg ) |
|
Grundig |
CUC220 |
Excess col & brightness
when heated |
OK when Txt pcb dis'd -
left it this way |
|
Grundig |
CUC220 |
Frame collapse. |
R2779 ( 18k ) o/c
remove to check. |
|
Grundig |
CUC220 |
Frame distortion. |
IC TDA1770 if used , D2761
( SKE4G1/04 ) , R2761 (
6.8ohm , .75W ) |
|
Grundig |
CUC220 |
Goes straight off at sw on |
odd characters in display -
HT = 180v (109v) HT pot int |
|
Grundig |
CUC220 |
Horizontal shaking. |
Tuner/IF dry joints , check
the electrolytics with freezer |
|
Grundig |
CUC220 |
INT START UP |
C631 100uF 40v
, C633 220uF
, C647 1uF
, C642 100uF + R646
270k |
|
Grundig |
CUC220 |
int start up |
TDA4600 |
|
Grundig |
CUC220 |
Interference at sides. |
IC TDA2595 sync/line osc
IC. |
|
Grundig |
CUC220 |
Lack of frame at bottom
when cold. |
C2768 ( 100uf ) on
deflection PCB. |
|
Grundig |
CUC220 |
No pic at switch on - looks
like its off tune |
C2221 ( 1uf 63v ) in
tuner/if unit. |
|
Grundig |
CUC220 |
No vision with raster and
sound. |
T2533 , Adj control SB ,
R2536 , C2536 , D2536 , D2532 |
|
Grundig |
CUC220 |
Pulling/Rolling |
C2216/2221 1µ 63v in IF
can by TDA5500 chip |
|
Grundig |
CUC220 |
Shutdown - intermittent
switching off. |
Dry R646
( 270k ) , TDA4600 ,
replace HT pot R647 ( 2.5k ) |
|
Grundig |
CUC220 |
Standby - intermittent
going into standby. |
Change R647 to ceramic. |
|
Grundig |
CUC220 |
Standby- intermittent going
into standby. |
IC663 ( 5v reg ) |
|
Grundig |
CUC220 |
Startup - switch on
problems & hum. |
Relay contacts jammed o/c. |
|
Grundig |
CUC2200 |
Small pulsating raster. |
Di614 ( 75v zenor )
in cutout circuit rev leak around 100k |
|
Grundig |
CUC2201 |
Int trips at sw on |
R637 1k set HT pot |
|
Grundig |
CUC2201 |
Tripping - then comes on. |
Set HT control R637
( 1k ) |
|
Grundig |
CUC2201 |
Tripping, thumping noise
& no display |
Combi tfmr o/c sec windings
N & L |
|
Grundig |
CUC2400 |
Dead. |
BU508D. |
|
Grundig |
CUC2400 |
Flashing & intermittent
picture. |
Poor contact on CRT base
board , & cap shorting. |
|
Grundig |
CUC2400 |
LOW SOUND |
TUNER FAULTY |
|
Grundig |
CUC2400 |
NO BLUE |
R769 ON TUBE BASE OC |
|
Grundig |
CUC2400 |
No Blue |
R760 15k on crt base o/c |
|
Grundig |
CUC2400 |
St/by only |
4M7 resistor in psu
connecting the 2 earth rails o/c |
|
Grundig |
CUC2400 |
Sync - intermittent frame
sync or bounce. |
MOD available. |
|
Grundig |
CUC2400 |
Tuning - will not tune in. |
5v rail down to 4v , IC676
( MC78MQ5CT ) |
|
Grundig |
CUC2401 |
BU508 getting too hot. |
Change TDA8140. |
|
Grundig |
CUC2401 |
Dead |
R637 1k HT Preset hi res |
|
Grundig |
CUC2401 |
Dead - faint tripping heard |
Dry joints LOPTx |
|
Grundig |
CUC2401 |
Dead HT oK at PSU o/p |
No HT at LOPTx - pri
winding o/c |
|
Grundig |
CUC2401 |
Dead psu tries but fails to
start |
C633 100µ 25v o/c |
|
Grundig |
CUC2401 |
Dead with silent tripping |
D666 in snubber network s/c |
|
Grundig |
CUC2401 |
Dead. |
D666 s/c. |
|
Grundig |
CUC2401 |
Goin into standby after few
mins. |
LOPTX ( If comes on agn from cold )
freezer dont work! |
|
Grundig |
CUC2401 |
Int dead |
HT pot R367 1k |
|
Grundig |
CUC2401 |
INT FIELD COLLAPSE |
D2758 INT OC |
|
Grundig |
CUC2401 |
Int loss of pic caused by
field collapse |
26v supply pin 8 TDA2655B
was only 4v - D2758 BY298 &
C2758 1000µ replaced |
|
Grundig |
CUC2401 |
Int start up |
TDA4600 chopper chip |
|
Grundig |
CUC2401 |
Int switches to st/by |
Tripler |
|
Grundig |
CUC2401 |
Low controllable sound |
Tuner |
|
Grundig |
CUC2401 |
No pic - blanked out |
Field only half normal
height due to supply only 10v to field chip - R525 0R33 hi res |
|
Grundig |
CUC2401 |
No pic - sound ok |
No vid o/p pin 8 TDA3566 -
Tr2523 BC548C s/c |
|
Grundig |
CUC2401 |
No raster - line collapse |
LOPTx o/c |
|
Grundig |
CUC2401 |
No sound |
C2276 ( 470uf ) s/c. |
|
Grundig |
CUC2401 |
No sound |
TBA130 chip not working due
to C2276 470µ s/c |
|
Grundig |
CUC2401 |
No sound |
Could be TDA2595, TDA130 or
SDA2011-A003 micro |
|
Grundig |
CUC2401 |
No sound or - Picture -
intermittent. |
Suspect the set-EHT control
( especially if made by Preh. |
|
Grundig |
CUC2401 |
SET GOES TO STBY VERY INT |
TRIPLER US |
|
Grundig |
CUC2401 |
Sound - mutes on video rec
playback. |
Mod ABL module. |
|
Grundig |
CUC2401 |
Standby - intermittent shut
down. |
Set HT control R637
( 1k ) may check Ok. |
|
Grundig |
CUC2401 |
Startup - failure to start
intermittent. |
Set HT R637 ( 1k )
may ch Ok , LOPTX if going off af few mins |
|
Grundig |
CUC2401 |
Switching to standby - my
take days. |
Tripler. |
|
Grundig |
CUC2401 |
Tripping - at switch on -
may come on. |
C661 ( 7u f , 25v ) |
|
Grundig |
CUC2401 |
Tripping - at switch on. |
R637 1k control. |
|
Grundig |
CUC2401 |
Trips at sw on |
L519 shorted turns |
|
Grundig |
CUC2410 |
AGC fault - dist pic on
good signal |
Video discriminator coil on
IF F2211 |
|
Grundig |
CUC2410 |
dead - spillage |
Replace 1.25 & 2.5A
fuses, chopper tr BU508A. Now works but R616 2k7 start up res overheats -
R617 thermistor u/s. Code 07902 - WVE |
|
Grundig |
CUC2410 |
no pic, sound & txt ok
blank raster |
no vid i/p at pin 8 TDA3566
- BC 548C Tr2523 s/c c-e |
|
Grundig |
CUC2410 |
NO SOUND |
TDA2595 MUTING SET |
|
Grundig |
CUC2410 |
No sound - may have had a
flash over. |
IC TDA2595 |
|
Grundig |
CUC2410 |
No startup - may try at
first. |
C633 ( 100u f , 25v ) o/c. |
| Grundig |
CUC2490 |
Comes on with the volume at max. No adjustment of volume is
possible. |
Push "N" in the keyboard, set the balance in the
middle and adjust volume to the desired level. It should work O.K after
this. |
| Grundig |
CUC2490 |
Comes on with the volume at max. No adjustment of volume is
possible. |
Push "N" in the keyboard, set the balance in the
middle and adjust volume to the desired level. It should work O.K after
this. |
| Grundig |
CUC2490 |
No sound. |
Short pins 1,3 of TDA6200 with 13,15 repectively.If sound
comes on, replace TDA6200. |
| Grundig |
CUC2490 |
No sound. |
Short pins 1,3 of TDA6200 with 13,15 repectively.If sound
comes on, replace TDA6200. |
| Grundig |
CUC2500 |
Sometimes switches to St-by. Eventually does not startup at
all. |
Replace TDA3640 chip |
| Grundig |
CUC2500 |
Sometimes switches to St-by. Eventually does not startup at
all. |
Replace TDA3640 chip |
|
Grundig |
CUC2600 |
Dead - no o/p from psu |
C631 100µ in psu |
|
Grundig |
CUC2600 |
Int blank raster or snowy
pic |
Tuner |
|
Grundig |
CUC2600 |
Tuner - snow or blank
raster from cold. |
Drys in tuner. |
|
Grundig |
CUC2800 |
Arcing from LOPTx former to
adjacent components |
Tripler faulty |
|
Grundig |
CUC2800 |
Dead - psu working ok |
Relay contacts |
|
Grundig |
CUC2800 |
No sound |
Check TDA6200 sound proc
& U2829B sound dem chip |
|
Grundig |
CUC2800 |
Sound from one chan only
& no brill adj |
Micro SDA2011-A005 faulty |
|
Grundig |
CUC2800 |
Sound low & dist |
U2829B IC sound chip |
|
Grundig |
CUC2800 |
The tripler had failed.
After replacing it the set |
Microcontroller chip type
SDA2011 -AOO5 . Make sure that you get the right one for the set. |
|
Grundig |
CUC3300 |
POOR FOCUS OR PICTURE SO
DIM IT CAN HARDLY BE SEEN |
C433 1000uF 25v
( NOT 16v AS
ORIGINALLY FITTED )
DO NOT RUN SET IN THIS CONDITION AS THE SCAN COILS MAY OVERHEAT AND
CRACK CR |
|
Grundig |
CUC3300 |
Poor purity & focus. |
C433 ( 1 , 000uf , 25v ) |
|
Grundig |
CUC3300 CUC3400 |
Poor focus |
Usually the focus pot on
tripler faulty but check C433 1000µ for s/c,
if its 16v working - fit 25vw (can cause scan coils to overheat) |
| Grundig |
CUC3400 |
+B decreasing when average brightness of picture increases. |
Change C611 47uF cap. |
| Grundig |
CUC3400 |
+B decreasing when average brightness of picture increases. |
Change C611 47uF cap. |
|
Grundig |
CUC3400 |
Arcing/random chan change |
tripler |
|
Grundig |
CUC3400 |
Blue raster with fb lines |
TDA3505 vid proc chip
IC9531 on chroma board |
|
Grundig |
CUC3400 |
Blue raster with flyback
lines. |
TDA3505 video processor
chip IC9531 |
|
Grundig |
CUC3400 |
dead |
on/off sw u/s CHS - G102 |
|
Grundig |
CUC3400 |
Dead - & tripping. |
Set HT control
( R637 ) int o/c ,
D666/D664 s/c , IC686 78M05 |
|
Grundig |
CUC3400 |
Dead - all fuses intact |
D691 BYV28/100 s/c (20v
supply) |
|
Grundig |
CUC3400 |
DEAD 800mA FUSE BLOWN |
DRY JOINTS ON CHOPPER TX
CHECK D663 664 666 C653 4n7 C667 2u2 |
|
Grundig |
CUC3400 |
Dead or tripping |
Set HT pot R637, D666 BYV16
s/c, D664 BA159 s/c or IC686 78M05 s/c |
|
Grundig |
CUC3400 |
Dead with buzz from Ipsalo
Tfmr |
The +M supply ok at 11v in
st/by but dropped instead of increasing to 20v when sw on. C630 0µ68
leaky |
|
Grundig |
CUC3400 |
Dead, 800mA SI642 fuse o/c,
chopper T661 BUT11A s/c |
Check for dry joints Ipsalo
tfmr or D663, 664 & 666 faulty also check C667 2µ2 |
|
Grundig |
CUC3400 |
Dead. |
Drys on main PCB. |
|
Grundig |
CUC3400 |
Int colour & rh side of
pic blanked |
TDA2579 timebase chip |
|
Grundig |
CUC3400 |
Int dead |
Pin 0 on lopt (eht
overwind) arcing internally - new lopt reqd |
|
Grundig |
CUC3400 |
Int or perm tripping - ok
on dummy load |
Timing cap C653 4n7 |
|
Grundig |
CUC3400 |
No chan change when cold -
display changes ok tho' |
Dry joint pin 15 tuner/if
socket |
|
Grundig |
CUC3400 |
No sound |
C266 1000µ 25v s/c; R367
8R2 safety res o/c |
|
Grundig |
CUC3400 |
No start up - ticks |
C653 4n7 connected to pin
15 of power chip u/s |
|
Grundig |
CUC3400 |
No start up with ticking |
HT at chopper coll - C653
4n7 connected to pin 15 power chip u/s |
|
Grundig |
CUC3400 |
Poor purity & focus. |
C433 ( 1 , 000uf , 25v ) |
|
Grundig |
CUC3400 |
Poor R/C response |
R1212 33R missing in sensor
pcb |
|
Grundig |
CUC3400 |
Startup - No s/up - ticking
from transformer. |
C653 ( 4.7nf ) connected
to pin 15 of IC. |
|
Grundig |
CUC3400 |
tripping |
set ht pot R637 |
|
Grundig |
CUC3400 |
Tripping comes on if adj
line frequency down. |
C653 ( 4.7u f ) |
|
Grundig |
CUC3490 |
Dead |
o/c HT fuse; s/c chopper
tr; sus dry joints pin 5 of daughter pcb |
|
Grundig |
CUC3490 |
Dead - chopper tr s/c &
fuse o/c |
C667 2µ2 (2 caps) dry
joints or low cap |
|
Grundig |
CUC3490 |
Dead - chopper tr s/c, HT
fuse o/c |
Dry joints pin 5 daughter
board |
|
Grundig |
CUC3490 |
dead no line drive or ht |
TR651 mains tfmr pins 1-15
o/c, pins 15-17 s/c |
|
Grundig |
CUC3490 |
Field fault - non lin with
top missing |
Pin 2 field chip only 12v
(24v) C411 1000µ 50v supply smoother u/s |
|
Grundig |
CUC3490 |
Field non lin |
C411 1000µ 50v supply to
fop chip leaky |
|
Grundig |
CUC3490 |
No pic - sound ok |
Check A1 volts present on
crt base - if not sus leakagein socket |
|
Grundig |
CUC3490 |
No sound |
TDA4480 sound chip |
|
Grundig |
CUC3490 |
No sound |
TDA448C IC sound chip |
|
Grundig |
CUC3490 |
No sound |
R367 o/c & C366 s/c
(audio o/p stage supply) |
|
Grundig |
CUC3500 |
DEAD HT LOW AT 80v
( 196v
) |
D635 SC |
|
Grundig |
CUC3500 |
No sound/vis - +C volts low
at 80v instead of 196v |
D635 BAT86 s/c |
|
Grundig |
CUC3500 |
NO SOUND-VISION |
CHECK D635
( BAT86
) SHORT |
|
Grundig |
CUC3600 |
breathes with brill |
Tripler/focus unit u/s |
|
Grundig |
CUC3600 |
Broad white vert bar &
SECAM light on |
BU508A LOPTr overheating.
TDA8140 chip faulty - driving it at twice freq |
|
Grundig |
CUC3600 |
No pic - dim vert band |
Check loptr base wfm - if
low or twice normal speed check C507 100µ & IC550 TDA8140 |
|
Grundig |
CUC3600 |
No pic - pic blanked |
Check supplies &
sandcastle pulse. Brill & contrast cont volts at pins 2 & 16
TDA8442 IC350 - if low & won't increase TDA8442 is sus |
|
Grundig |
CUC3600 |
No picture - EHT Ok. |
If pins 2 & 16 do not
increase if brit/cont is adj IC350 TDA8442. |
|
Grundig |
CUC3600 |
NO PICTURE JUST DIM
VERTICAL BAND ON SCREEN |
C507 100uF
OR IC550 TDA8140 |
|
Grundig |
CUC3800 |
Dark on left, bright on RH
side |
C2582
1µ faulty - lum signal decoupler to pin 15 TDA3505 chip |
|
Grundig |
CUC3800 |
EW fault aft tripler
replacement |
R571 4R7 & IC555 E/W
chip |
|
Grundig |
CUC3800 |
Int switches to SECAM . |
C507 100uF 25v. Connects to
pin 2 TDA8140 line drive IC. |
|
Grundig |
CUC3800 |
No sound |
IC2210 U2829B - fit same
type as replacement |
|
Grundig |
CUC3800 |
No sound - just hiss |
IC2110 U2829B sound IF
demod chip on sound IF stereo board |
|
Grundig |
CUC3800 |
No sound - multistandard TV
on wrong setting |
On front panel
press"N", select 0,1,2,3 or 4 with P+/- buttons. Each no. refers
to a different std. Press "M" to store |
|
Grundig |
CUC3800 |
PICTURE DARK ON LEFT HAND
SIDE BRIGHT ON RH SIDE |
C2582 1uF ON PIN 15 TDA3505
DRIED UP AND OC |
|
Grundig |
CUC3840 |
Int dead |
D661 BYW72 in 12v supply
going o/c |
|
Grundig |
CUC3840 |
INT DEAD SET COMES BACK ON
BY ITSELF |
D661 BYW72 12v RECTIFIER
INT OC |
|
Grundig |
CUC3850 |
Dead - HT present , no line
& display corrupt |
IC656
LM317 12v reg not turned on because IC850 micro SDA2080-A003 faulty. When
replaced, tripler arcing - proved to be the cause |
|
Grundig |
CUC3850 |
Dead - no line drive - 150v
HT ok |
No 12v at TDA8140 drive
chip. R661 0R2 burnt out caused by D661 BYW72 leaky |
|
Grundig |
CUC3850 |
Pic pulses at random |
Poor contact plug to
Aquadag on crt |
|
Grundig |
CUC3850 |
St/by only |
2SD1432 LOPTr T572 s/c due
to s/c in TDA8140 line dr chip (Don't use BU508A instead of 2SD1432) |
|
Grundig |
CUC3850 |
St/by only |
Check setting of pre-set
(standing bias for opto coupler) on vertical st/by panel |
|
Grundig |
CUC40 |
Frame collapse. |
D2758. |
|
Grundig |
CUC41 |
Dead - blowing fuse
intermittently. |
D657 ( MZD160 ) |
|
Grundig |
CUC41 |
Poor contrast |
T2251 in tuner/if has glue
on it's legs , try cleaning it off. |
|
Grundig |
CUC41 |
Raster - white. |
R723 high or o/c. |
|
Grundig |
CUC41 |
SOUND NO PICTURE NO LINE
DRIVE |
TDA2595 US |
|
Grundig |
CUC41 |
Tripping. |
R651 in series with set HT
control o/c. |
|
Grundig |
CUC41 |
Tuning drift |
C2230 0µ1 surf mount in
tuner leaky (across TDA5430) |
|
Grundig |
CUC41 |
Tuning drift with 33v down
to 28v |
C2234 0µ1 sm cap in
tuner/if leaky - across pins of TDA5430 |
|
Grundig |
CUC41/70 |
Frame collapse. |
D353 s/c. |
|
Grundig |
CUC41/70 |
If channel changed
sometimes snow would appear |
Check on/off switch
momentary contacts |
|
Grundig |
CUC41/70 |
Sound - no sound & snow
on picture. |
DJ IC681. |
|
Grundig |
CUC41/70 |
Standby - int going into
standby. |
C642 ( 100u f , 10v ) intermittent
o/c by TDA4600. |
|
Grundig |
CUC41/70 |
Tuner - drift for 1st 10
minutes. |
If TDA4426 ,
change C2237 to 22uf , if
TDA4427 change IC. |
|
Grundig |
CUC41/70 |
Tuner - snow on picture
& no sound. |
DJ IC681. |
|
Grundig |
CUC41B |
Intermittent colour when
cold. |
Q2567 ( 4 , 43Mhz Xtal ) |
|
Grundig |
CUC41B |
Intermittent display at
switch on & no memory |
IC663 ( MC78NI5 ) 15v
supply to IC2301 down to 10v. |
|
Grundig |
CUC41B |
Memory - channel 1 & 2
losing memory. |
IC2375 ( MCM2801 ) |
|
Grundig |
CUC41B |
Memory - no &
intermittent display at sw on. |
IC663 ( MC78NI5 ) 15v
supply to IC2301 down to 10v. |
|
Grundig |
CUC41KT |
DEAD POWER SUPPLY WORKING |
TY40164 7812 OC |
|
Grundig |
CUC41KT |
Dead. |
D655 ( BYW76 ) s/c. |
|
Grundig |
CUC4400 |
Chan changes & vol
varies int |
IR detector TFMS3300 |
|
Grundig |
CUC4400 |
ERATIC LINE SYNC |
C2257 100nF 63v |
|
Grundig |
CUC4400 |
Flickering/lines with pic
breakup |
C2257 100n 63v in line osc |
| Grundig |
CUC4400 |
No sound or Picture, EHT normal, screen is black. |
Change T2213 and T2221 on IF board. No leaks or any other
defects were detected. |
| Grundig |
CUC4400 |
No sound or Picture, EHT normal, screen is black. |
Change T2213 and T2221 on IF board. No leaks or any other
defects were detected. |
|
Grundig |
CUC4400 |
Poor pic with ringing |
TDA5931 IC2210 on if panel |
|
Grundig |
CUC4400 |
SEVERE PICTURE DISTORTION
IN IF STAGE |
TDA5931 US |
|
Grundig |
CUC4401 |
Dead o/p volts from psu low |
C633 100µ 25v o/c |
|
Grundig |
CUC4410 |
Dead - BU508A LOPTr s/c |
TDA8140 chip giving dist
line pulses - chip was casue of problem |
|
Grundig |
CUC4410 |
Excess width |
D7102 ZPD30 in E/W module
s/c |
|
Grundig |
CUC4410 |
No pic - sound ok - no line
drive |
