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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: 534
GrundigCUC95Field collapseall 3 field pre-set pots had been twiddled & broken - replacement cure14-09-04
GrundigCUC95No pic, heaters or EHT - no line pulses from TDA1950EHT cap had been arcing and caused demise of TB chip TDA1950 & TDA1770 field chip14-09-04

GrundigG100Bright white raster - sound okR315 100R 1/4w fusible o/c14-09-04
GrundigG1000bright raster sound okR316 10R in HT o/c Also replaced rect & smoother to be safe14-09-04
GrundigG1000Dead - IC500 ST6365 micro not being resetNo reset pulse pin 33 due to either Tr540 BC847 or Tr451 BCX19 sm trs going s/c - replace both14-09-04
GrundigG1000Dead - lop tr s/c & high HT (200v)D105 BAS16 sm leaky14-09-04
GrundigG1000Dead - no 9v supplyR116 fusible o/c IC102 5v reg overheats - C543 sm cap under µ s/c14-09-04
GrundigG1000Dead - slowly tickingC104 Mains smoother o/c14-09-04
GrundigG1000Dead - trippingD304 BY133 in LOP s/c14-09-04
GrundigG1000Dead & tickingD301 BA157 26v supply s/c14-09-04
GrundigG1000Field collapseR337 100R14-09-04
GrundigG1000Instability using SCART i/pMicro chip faulty14-09-04
GrundigG1000Int PSU failure, grey scale variations etccheck C104 47mfd 400v - if Black Siemens type replace it14-09-04
GrundigG1000No lum in txtsm TR653 BC847 leaky b-e14-09-04
GrundigG1000No soundR550 4R7 (9v feed to audio chip) TDA2822M IC550 o/c14-09-04
GrundigG1000Peak white pic with fb linesR999 100R on crt base14-09-04
GrundigG1000pink raster with striations sound/rc okchanged 6 trs on crt base + 3 15k resistors cured it14-09-04
GrundigG1000Reduced width with foldoverCheck line freq is not twice normal - if so micro IC500 75990-200-63 faulty - mod available14-09-04
GrundigG1000St/by onlyD304 BY133 s/c ; R314 6k8 4w o/c14-09-04
GrundigG1000To enter service modePress "P+" & "P-" together at sw on. To choose a funct select menu on r/c. Adj with "P+" & "P-" buttons. Choosing another funct stores setting14-09-04
GrundigG1000Unfocused 6 inch wide band down screen onlyLine freq twice operating freq - cannot be adj - IC500 micro faulty14-09-04
GrundigG1000Blank raster and narrowR315 10R o/c - supply to RGB stage also dry joints power trs14-09-04

GrundigG1000St/by onlyNo line drive - R314 6k8 2w o/c14-09-04
GrundigG1000Tripping with burning smellLOPtx14-09-04
GrundigG1000 GT2103Bright raster with fb linesR315 10R near LOPTx o/c - supplies volts to RGB14-09-04
GrundigGCS100Dead - blowing fusible resistor.Insulating pad under TY501 leaky.14-09-04
GrundigGRT550Dead.T661 ( S668T ) faulty.14-09-04
GrundigGSC100Dead - blowing 3.15 fuse - intermittently.EHT cap arcing.14-09-04
GrundigGSC100Dead - blowing 3.15amp fuse.EHT cap jumping across to degaussing coil.14-09-04
GrundigGSC100Dead.R607 o/c , faulty thyristors , insulation in line o/p stage.14-09-04
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