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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 38
Alba
CTV
335
9
No pic - sound ok
Loss of line drive - Q601 BD679A reg; print flash over between base Q601 & o/p scan coil skt
14-09-04
Samsung
CI
335
1 P68
Int dead when hot
C808 ( 330pF )
14-09-04
Samsung
CI
335
1A
Dark pic
C907 1nF 2kv decoupling cap on crt base leaky
14-09-04
Samsung
CI
335
1A
Dead - no start up volts pin 4 IC801
Chip faulty SDH209B
14-09-04
Samsung
CI
335
1A
Int dead when heated with no st/by led
C808 330pF 2kv disc cap in snubber network - checked ok out of cct
14-09-04
Samsung
CI
335
1A
Width reduced with bright vert section
wform at coll of Q401 driver rounded - D405 1N4003 in supply o/c (startup feed diode D404 was in action all the time)
14-09-04
Samsung
CI
335
1A P68SC6
Dead
CHECK RESISTORS FEEDING PIN 4 IC801 IF OK REPLACE IC801
14-09-04
Samsung
CI
335
1X
Dead
IC801 SCH209B; R803 270k; R804 270k
14-09-04
Samsung
CI
335
1X
Field collapse - no sound
R418 1R o/c
14-09-04
Samsung
CI
335
1X
Int goes into search tune
RX01 10Mhz
14-09-04
Samsung
CI
335
1X
Int going into search tuning mode.
RX01 ( 10Mhz ) faulty.
14-09-04
Samsung
CI
335
1X
Int interference on picture.
Aquadag earth lead loose.
14-09-04
Samsung
CI
335
1X
Int loss of col
Loose conn BCGND on crt base
14-09-04
Samsung
CI
335
1X
Interference on pic - int
Aquadag earthing loose
14-09-04
Samsung
CI
335
1X
No colour Int.
Loose connector BCGND on CRT panel.
14-09-04
Samsung
CI
335
1X
No raster - sound ok
R925 2R4 2w o/c
14-09-04
Samsung
CI
335
1X
No raster - sound Ok.
R925 ( 4.4R , 2W ) o/c.
14-09-04
Samsung
CI
335
1X
NO RED OSD COECT COLOUR
IC501 TDA 4661 MAY ALSO CAUSE LOSS OF BLUE
14-09-04
Samsung
CI
335
1X
No red tho' OSD ok
IC501 TDA4661
14-09-04
Samsung
CI
335
1X
No sound or raster - st/by led ok
D402 KF105 s/c; R826 1R o/c; C908 1µ 250v o/c - on crt base
14-09-04
Samsung
CI
335
1X
No sound or raster - standby LED on.
D402 ( KF105 ) s/c , R826 ( 1R ) o/c , C908 ( 1u f , 250v ) on CRT base o/c.
14-09-04
Samsung
CI
335
1X
No tuning
DZ824 33v zener leaky; R822 15k 2w o/c
14-09-04
Samsung
CI
335
1X
St/by only
RD201 5v6 zener leaky; IC802 MC7808 s/c
14-09-04
Samsung
CI
335
1X
Stuck in standby.
RD201 ( 5.6v zener ) leaky , IC802 ( MC7808 ) s/c.
14-09-04
Samsung
CI
335
1X
Will not tune in.
DZ824 ( 33v ) leaky , R822 ( 15k , 2W ) o/c.
14-09-04
Samsung
CI
335
2 P68
Dead - IC801 SDH209B faulty
When replaced, 125v HT was 170v due to C852 470µ 16v faulty
14-09-04
Samsung
CI
335
2AT P68
Slow to change chan, go into Txt & analogue functs
TX01 27Mhz Xtal
14-09-04
Samsung
CI
335
2XT P68C
Dead with LOPTr s/c
Check 125v HT line before replacing LOPTr Q402 2SD1651 - should be 125v. If higher C852 470µ 16v on psu pri is usually the cause
14-09-04
Samsung
TVP
335
01
No signals
Check dry joints tuner around coils & Xtal etc
14-09-04
Samsung
TVP
335
01S
Int off & long time to come on from mains sw on
IC801 opto coupler
14-09-04
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