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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: 15
Harwood
14"
No R/C or front panel control
Check mains switch
14-09-04
Harwood
CT14
Drifts off tune
Check D9 - 16 and clean tuning pots/panel
14-09-04
Harwood
CT14
No pic - when A1 increased field collaps noticed
TDA3651 brought back partial field scan but not until TDA3651 was field fully restored
14-09-04
Harwood
CT14
SOUND BUT NO PICTURE - FIELD COLLAPSE
REPLACE TDA3651 IF FIELD NOW LOW , CHECK PIN 2 TDA4503 DRIVE SHOULD BE 2v Pk-Pk IF NOT REPLACE TDA4503
14-09-04
Harwood
CTV14
Dead - HT 114v present coll LOPTr
Check/replace TR3 BC558 & TR4 BC639 line dr trs
14-09-04
Harwood
CTV14
Dead 114v on line op transistor
Replace both Tr3 BC558 and Tr4 BC639 line drivers
14-09-04
Harwood
CTV14881R
Corrugated verts
C611 220µ 25v in psu
14-09-04
Harwood
CTV14881R
SERATED EDGES TO PIC - LESS AFTER WARM UP
C611 220mfd 25v
14-09-04
Harwood
HTF142SL
Dead - LOPTx squealing - blows LOPTr
C261 22nF leaky
14-09-04
Harwood
HTV4914
Int snowy pic
Crack in print in tuner just after IF pin
14-09-04
Harwood
HTV9014R
Tripping
EM112 st/by tfmr o/c winding
14-09-04
Harwood
HTV9425RTN
Jumps when cold & int blank raster
R436 3R9 2w dry joints & hi res (near scart)
14-09-04
Harwood
HTV9425RTN
Off with a bang
C926 22µ 250v had exploded & C910 47µ 25v, C908 10µ 50v in pri psu
14-09-04
Harwood
HTV9425RTN
Sync poor when cold
C127 3µ3 50v in IF can
14-09-04
Harwood
TS2604P
Dead
R3 fusible sprung open, 400mA fuse B3 o/c - no supply to RGB L4 in feed o/c
14-09-04
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