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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

MakeModelProblemSolutionDate
Found: 901
HitachiNP84CQ/2DEAD BUZZES , ZD953 S/CC908 4u7 160v14-09-04
HitachiNP84CQ/2Dead.STR4211 IC901 power supply IC s/c , also change2.7v zenor14-09-04

HitachiNP84CQ/2Distorted sound.R423 ( 56R ) high in value.14-09-04
HitachiNP84CQ/2Int blowinf fuse.TH901 posistor.14-09-04
HitachiNP84CQ/2line - tear - pulling & drift.C214 ( 470uf ) of pin 7 of IC20114-09-04
HitachiNP84CQ/2NO PIC + SCREAMSLOPT + TRANSISTOR SC14-09-04
HitachiNP85Appears dead but voltages on tube baseD920 , D919 in psu dry jointed or oc.14-09-04
HitachiNP85Teletext - coming over Tv picture.IC2101 ( SAA1272 ) , SAA1251.14-09-04
HitachiNP85CQblank raster no soundTDA4505 no vid o/p chip faulty TDA4505E will work14-09-04
HitachiNP85CQDead - normal volts at crt baseDry joints D920, 919 in psu14-09-04
HitachiNP85CQNo soundTDA4505 -2Y chip faulty - Mod kit reqd to use TDA4505E14-09-04
HitachiNP86BLANK RASTER + NO SOUNDTDA4505 US-CHECK TYPE No-14-09-04
HitachiNP86INT LOSS OF PIC , GOES DARKXTG2 17.73Mhz CRYSTAL ( IN TEXT MODE PIN 9 IC13 SHOULD BE 4v , IN MIX IT SHOULD PULSE , TV MODE ZERO. )14-09-04
HitachiNP87SET INT WON'T COME ON + BLOWS LINE OP TRANSISTOR EC917 IN POWER SUPPLY 4u714-09-04
HitachiNP8CQInt colour.One leg og R620 s/c to jumper lead J723.14-09-04
HitachiNP8CQInt no colour.Try adj R515 , make sure agc control R203 is turned up.14-09-04
HitachiNP8CQOVER BRIGHT PIC , NO FLYBACK LINES22mfd , 250v SMOOTHING CAP TO RGB OP. STAGES14-09-04
HitachiNP8CQStandby - in standby at switch on.BC548 also 4 7uf/22uf electrolytics.14-09-04
HitachiNP8CQStartup - no startup.Chopper transistor.14-09-04
HitachiNP9ADead - Int dead.DJs14-09-04
HitachiNP9ALine - pulling on verticals.CRT conductive earthing , C983 , C907 , IC980.14-09-04
HitachiNP9AStandby - going into standby at switch on.Check C919 if its a 22u f change it to a 220u f.14-09-04

HitachiNP9AStandby - going into standby int.4.43Mhz crystal X1401. on memory PCB PC895.14-09-04
HitachiNP9AStandby - stuck in standby mode.Change C919 to 220u F , replace C906/918 , drys on T901/70314-09-04
HitachiNP9ATripping.Q905 ( 2SA673 ) o/c.14-09-04
HitachiNP9AWidth - reduced.R756 o/c.14-09-04
HitachiPAL4Frame - foldover after 10 mins.C613 ( 100u f ) o/c.14-09-04
HitachiTN2166/2146POWER SUPPLY TRIPSSUSPECT DRY JOINTS ON IC95214-09-04
HitachiTN2166/2146St/by only - HT=90vDry joint IC952 5v reg14-09-04
Hitachi/FujianHFS1425Store function inoperative-Does not hold memories.Pin2 of M58655 memory chip, must be at -30V. If not, check/ replace C920 1uF/250V cap.14-09-04
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