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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: 21
B & OLS5000St/by only with LED dimming when chan butt pressedCheck connections in metal can under crt neck, esp wickman F1& micro, xtal etc - see Sept 91 TV Mag for article14-09-04
B & OLS5000Txt fault - blue blocks darken on lh sideC56 4µ7 25v & check for drys around IC2 on txt pcb14-09-04

B & OLZ5000 3766Won't work on batt - ok on mainsAux sw behind mains sw contacts needed resetting - make sure battery supply is adequate14-09-04
B & OMX4500/5000Tuner intDiscard VHF tuner if not reqd or blanket resolder (nearest ae skt)14-09-04
FidelityZX5000Blank raster with lines at top & noisesC18 HT res cap 220µ 250v14-09-04
FidelityZX5000deadBUT56A chopper tr s/c, C28 10n burnt leg, C5 4µ7 replaced, C18 100µ 250v o/c14-09-04
FidelityZX5000Dead - Chopper tr BUT11A s/cReplace C5 4µ7 63v, C7 220µ 25v, IC1 UC3844N, IC13 CNY75B opto14-09-04
FidelityZX5000Dead BUT56A s/c.R120 ( 3.3ohm ) o/c , R115 ( 0.68ohm ) , C5 ( 4.7uf ) , IC13 ( UC3844 )14-09-04
FidelityZX5000Dead.HT low at 30v , C18 ( 100uf 250v )14-09-04
FidelityZX5000NO GREEN AND NO COLOUR UNLESS BRIGHTNESS TURNED UPVCU2213 US14-09-04
FidelityZX5000No green unless on low brill & no col until brill control turned up & col out of registerVCU2213A video codec chip14-09-04
Finlux5000Chopper tr BUZ91 Tu1fails aft 10 insCheck Du7 BYV36C diode in snubber network14-09-04
Finlux5000Dead , BUZ91 chopper transistor Tu1 s.c , both fuseShould have 1.2 -2.5V at pin 2. If OV , replace Ru24 and Ru26 ( both 150k ) . Should be 1.8V at pin 3. If high , replace Ru22 and14-09-04
Finlux5000Dead BUZ91 chopper tr s/c & 3 fuses o/cCheck Du1 BY500, Ru24/26 150k, Ru22/23 374k 14-09-04
Finlux5000Dead with noisesCu34 220µ 385v mains cap o/c14-09-04
Finlux5000Int goes pink with fb linesJE38 link dry jointed (part covered by front plastic)14-09-04
Finlux5000No luminance - sound/text okTe9 BC857 - not marked on pcb - base to pin 9 txt pcb, 1k emitter res Ra88 to junct Re31 & Re3514-09-04
Finlux5000No signalsTuner supply pin 3 stuck at 30v (0-24v); ICa2 EEPROM faulty14-09-04
Finlux5000Wont come on from st/by (ok from front)Du4 BYS27-45 7v supply rect14-09-04
GranadaC51KF6 Finlux 5000Dead - no LED indWickman Fuse Su3 (1A6) o/c , TU1 IRFBC40 - BUZ91 fitted in lieu, Du7 BYV36C also check Su3 for o/c & Tu1 for s/c14-09-04
SaishoCM260TT ZX5000DeadTr1 BU145A chopper tr s/c, 1.6A fuse o/c, IC13 TIL111 opto coupler - IC1 UC3844 replaced as a precaution14-09-04
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