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Repair tips

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

MakeModelProblemSolutionDate
Found: 178
BushWST Professional 4400 seriesService Mode accesshold menu button while turning CTV on until the red LED lights up. Release the menu button and press standby.14-09-04
Decca C SeriesVolume won't Adj over full range or no front Panel Op.For volume - press --/- on remote , Vol + on set , --/- on remote for no front panel , Switch set off , Press & hold P+ on S14-09-04

DeccaA SeriesDeadR802 R803 ( 15K )14-09-04
DeccaA SeriesDead with squealDry joints R808 ww resistor14-09-04
DeccaA SeriesNo remote operationIR Rx faulty14-09-04
DeccaA SeriesVarying HTDry joints R808 ww resistor14-09-04
DeccaB SeriesLine whistle - mod reqdAdd 220pf cap to pin 5 & pin 6 of opto IC802 in psu14-09-04
DeccaB SeriesLoses register 7 (line osc free run)Dry joints 27Mhz Xtal on Txt pcb14-09-04
DeccaB SeriesTo enter electronic screwdriver settingsMove jumper link by proc to other posn. No. in lh of screen is parameter & can be stepped thro' in Hex from 00 to 12 using "3" button (up) & "2" button (down). Parameters changed by using "Balance left & right"14-09-04
DeccaC Serieschildlock onsw on tv whilst holding in 'P+' button on front14-09-04
DeccaC SeriesCuts out on high brightness scenesHT volts drops in sympathy - CE803 220µ 16v ( supply to TDA4605)14-09-04
DeccaC SeriesField collapsedry joint I40214-09-04
DeccaC Seriesint trip - once or twice a dayworse when heated - - TDA4605 heat sensitive - u/s14-09-04
DeccaC SeriesLine down pic when cold (folded scan)R413 18R ?w hi res - check HT correct -115v 14/20"; 109.5v 15/21"14-09-04
DeccaC SeriesNo R/C operationNo o/p from r/c chip IC750 Replace TFMS4360N with TFMS536014-09-04
DeccaC SeriesSt/by LED on - otherwise deadDry joint on end pin SCART skt depriving line feed to dr tfmr14-09-04
DeccaC Seriesst/by onlyHT (B+) present - on/off sw perm made - was faulty14-09-04
DeccaC SeriesStuck on Chan 1 & no analogue control (Child Lock)Hold "Prog +" whilst switching on14-09-04
DeccaD SeriesAll red.R012 100k on CRT base.14-09-04
DeccaD SeriesBright Green RasterGreen cathode volts low - Tr931 BC547 o/c & R932 100k hi res14-09-04
DeccaD Seriesfield collapseR504 3M3 faulty - feeds ramp to pin 42 IC503 TDA836214-09-04
DeccaD SeriesLack of heightCheck 33v supply IC001 TAA550 & feed res R015/6 6k8 & R504 3M314-09-04

DeccaD SeriesLine foldover with crt heaters dimmingR427 line feed res high res14-09-04
DeccaD SeriesNo Field ScanIf IC401 & R414 are OK check R504 3M3 ohm14-09-04
DeccaD SeriesNoisy Power Supply in Stand ByChange C806 to 2.2uF 50V14-09-04
DeccaD SeriesTuning procpress 'filled square' button, press '4', search up with '4', down with '4&3'. Press '5' to store chan, press'6' to exit set up14-09-04
DeccaD SeriesImprovement of AFC Pull in time and Inter-channel MuteChange R001 to 18K & R003 to 27K14-09-04
DeccaDBN9B52P B SeriesBallooning picDry joints line scan coill plug on main pcb14-09-04
DeccaE seriesDeadR423 in pri of line dr O/C - check Tr403 2SC1815Y14-09-04
DeccaE seriesHigh HTR834 75k hi res14-09-04
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