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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: 42
Grundig
CUC2
131
No power
R60502 (3M Ohm 2watt) open circuit
14-09-04
NEI
2
131
BLANK RASTER WITH SOUND
TDA3653 FIELD OP. IC.
14-09-04
NEI
2
131
FIELD COLLAPSE NO FIELD DRIVE
D001 TAA550 33v STABILISER US ( FEEDS REFERENCE INTO TDA8305 )
14-09-04
NEI
2
131
Field collapse/ int height & going off tune
D001 TAA550 33v volt stab faulty - (feeds IC100 TDA8305 jungle chip)
14-09-04
NEI
2
131
Field lineararity
C407 ( 1 , 500uF ) 50V
14-09-04
NEI
2
131
No pic - sound ok
Pin 8 TDA3651A sandcastle pulse low - TDA3653 pin 7 FOP chip was cause - FOP chip faulty
14-09-04
NEI
2
131
No sound
Check for D/J on Speaker plug
14-09-04
NEI
2
131
Sound No pic
R605 ( 5K6 ) 2Watt
14-09-04
NEI
2
131
TX
Dead - off with a bang
LOPTr Q600 s/c because C604 1µ 160v was dry jointed, also D604 BA157 s/c, R609 10k burnt up
14-09-04
NEI
2
131
TX
Int dead
Dry joints L802 in psu - virtually invisible
14-09-04
Protech
5
131
NT Vestel
No pic - sound ok
Poor washed out pic appeared when A1s advanced - TDA6107Q RGB O/P chip on CRT base
14-09-04
Samsung
CI50
131
T
Field collapse
R412 1R 1/2w safety o/c; KA2131 field chip; R305 20k o/c
14-09-04
Sanyo
80P-B14 CTP3
131
Dead - chopper BUT11A Q304 s/c
R313 2R7 o/c - R302 390k o/c was the cause
14-09-04
Sanyo
CPT3
131
Extreme EW bowing
If H.T. low replace C308 ( 100uF ) 400V
14-09-04
Sanyo
CTP 3
131
BLANK RASTER WITH FLYBACK LINES
CHECK R464 ( 100ohms ) 85v SUPPLY TO RGB O.P.
14-09-04
Sanyo
CTP 3
131
SEVERE RASTER DISTORTION , FAST ROLLING
MAINS SMOOTHING O.C. 100mfd 400v
14-09-04
Sanyo
CTP3
131
BLANK RASTER WITH FLYBACK LINES
CHECK R464 ( 100ohms ) 85v SUPPLY TO RGB O.P.
14-09-04
Sanyo
CTP3
131
SEVERE RASTER DISTORTION , FAST ROLLING
MAINS SMOOTHING O.C. 100mfd 400v
14-09-04
Sanyo
CTP7
131
DEAD BU208 SC . CHECK HT , IF HIGHER THAN 145v
C314 220uF 25v
14-09-04
Sharp
CV2
131
H
Dead - no line drive
Replace FOP IC X0640CE with equiv. LA7830 & 220mf cap. and the 4.7ohm safety feed res by LOPTx
14-09-04
Sharp
CV2
131
SC
Dead - led lights briefly at sw on
C723 3µ3 63v bipolar cap
14-09-04
Sharp
CV2
131
SC
Flyback lines at top of pic
C502 220µ 25v
14-09-04
Sharp
DV3751 DV5
131
H
CHANGING MICRO
WHEN CHANGING MICRO REPLACE NVM ALSO IC1001 SDA20561- ( A535 ) RH-IX1492BMN2 IC1002 NVM Sharp CH-IX1463CJH7
14-09-04
Sharp
DV5
131
S3B
Int won't come out of st/by with LED flashing
R745 0R33 risen slightly - To adjust the B+ set R739 for 14 volts on D712
14-09-04
Sharp
DV5
131
S3B
St/by only ; 5v & 12v supplies not being sw on by Q703 & Q707
Fusible R744 o/c - replacing it only restored 12v - check D732 & 733, one was nearly o/c
14-09-04
Sharp
DV5
131
H
Blown psu
Chopper tfmr T101 has s/c pri windings
14-09-04
Sharp
DV5
131
H
Dead
Start up supply to TEA1039 only 2v (15v); R728 3k3 fusible o/c; D707 RGP10G
14-09-04
Sharp
DV5
131
H
FAILURE OF IC501 DUE TO INCREASED F.BACK
Replace IC & remove jumper from D502 & replace with 4.7V zen as marked also fit D503 as marked PtN DX0501BMZZ
14-09-04
Sharp
DV5
131
H
FOLDOVER WITH COLOURED FLYBACK LINES
REPLACE C712 100MFD 35V
14-09-04
Sharp
DV5
131
H
Int Txt/loss of chans
IC1002 EEPROM (blank 24C02P unsuitable)
14-09-04
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