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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: 18
Alba
C
TV5
5
bright pic
black bars present when A1 reduced - HT res cap C437 22µ 250v
14-09-04
Alba
C
TV5
5
Dead
s/c reading in lop due to D404 FR155 eff diode (pin 11 to chassis)
14-09-04
Alba
C
TV5
5
DEAD LINE OP TRANSISTOR READS SC
D404 SC
14-09-04
Alba
C
TV5
5
NO LUMINANCE
CHECK R423 100k R429 180k Q303 IF REMOVING D309 CURES TRY Q304 R366 22k
14-09-04
Alba
C
TV5
5
No luminance
Check R429 180k & R423 100k in beam lin cct. R366 22k
14-09-04
Alba
C
TV5
5
No pic OSD OK
R366 ( 22K )
14-09-04
Alba
C
TV5
5
Smeary pic
RGB colls only 100v, L501 330µH o/c
14-09-04
Alba
C
TV5
7
Dead - st/by only
No HT - R221 270k o/c & check R228 270k & Q116 s/c b-c used BC547 in lieu
14-09-04
Alba
C
TV5
984
Bright green raster with fb lines
IC901 TDA6108JF RGB o/p chip
14-09-04
Cascade
TV5
10
BLOWS LINE OP TRANSISTOR AT SWITCH ON
VR901 , ZD901 , ZD902
14-09-04
Cascade
TV5
10
Blows LOPTr at or shortly aft sw on
HT supply high until warmed up (should be 112v) - VR901 HT pot
14-09-04
Cascade
TV5
10
St/by only
HT at lop tr = 125v (112v); C909 47µ 63v, R414 12R 2w o/c; ZD401 12v zener s/c
14-09-04
Cascade
TV5
11
Tripping
Sparking between scan coils - replaced & fop chip AN5521
14-09-04
Cascade
TV5
11T
Dist sound
Tweak reqd on sound trap coil
14-09-04
Cascade
TV5
11T
Trips at sw on with crack - high HT
C909 47µ ZD402 12v zener s/c & R422 o/c
14-09-04
Roadstar
C
TV5
52
Dead
Check CP22 & 30 100µ & RP04 & 05 180k. QP01 2SA1012 - use BD224C in lieu. ZP06 6v8 zener & RV01 4R7 & ICV1 TDA3653
14-09-04
Schneider
S
TV5
187CH 11AK19-48
Dead with LED lit Green
No line drive - TDA8840-1Y (can use 2Y suffix but will need to adj brill)
14-09-04
Schneider
S
TV5
501 11AK19
Bright screen with fb lines
Check D609 BA159 & its series connected resistor
14-09-04
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