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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: 26
HitachiG7P Mk2Blank white raster.C711 dry jointed by LOPTX.14-09-04
HitachiG7P Mk2buzz on sound - flat picvid det coil L20214-09-04

HitachiG7P Mk2DeadTDA4601 chopper chip - also replace C914/5/6/714-09-04
HitachiG7P Mk2Dead - HT highX ray prot operating due to R716 51k res dry jointed14-09-04
HitachiG7P Mk2Dead R901 3R9 7w surge lim res o/cC919 4n71kv leaky & check C928 2n2 2kv14-09-04
HitachiG7P Mk2Dead with only 33v HT at LOPtrC909 150µ 400v mains smoothing cap o/c14-09-04
HitachiG7P Mk2Field bounce or st/by onlyIC703 MC7809 9v reg dry jointed or faulty14-09-04
HitachiG7P Mk2FOP chip has short lifeCheck HT is not too high - if so U know what to do!14-09-04
HitachiG7P Mk2Goes off aft half an hourDry joints C711 47µ 200v14-09-04
HitachiG7P Mk2Green raster with flyback linesR808 22k ?w o/c14-09-04
HitachiG7P Mk2grey raster with fb linesC711 47µ 200v bulging & faulty by LOPTx14-09-04
HitachiG7P Mk2int pic size/htC906 4µ7 250v14-09-04
HitachiG7P Mk2Mass of lines at centre of screenComes/goes with board flex - C702 dry joints - near IC701 FOP chip14-09-04
HitachiG7P Mk2NO GOR920 100k OC14-09-04
HitachiG7P Mk2no sound or pic - ht okfield collapse. No 9v to field chip as MC7809 IC703 o/c14-09-04
HitachiG7P Mk2No start upC911 82pf across pins 2 & 3 TDA4601 psu chip14-09-04
HitachiG7P Mk2no tuningR044 12k 0.5w o/c ZD002 30v tuning volts diode o/c14-09-04
HitachiG7P Mk2offR901 6R8 5W o/c BUT12AF chopper tr s/c ZD903 180v over volts diode ZD903s/c14-09-04
HitachiG7P Mk2off with smokeC919 4n7 1kv & C928 2n2 1kv cracked cases14-09-04
HitachiG7P Mk2Pic blanks out int or goes bright & tripsC711 47µ 200v dry jointed by LOPTx14-09-04
HitachiG7P Mk2Reverts to st/by aft few minsHT gone high as C906 4µ7 250v is faulty14-09-04
HitachiG7P Mk2Snowy raster & no controls workpin 15 IC101 micro high -caused by faulty IC601 AN5521 FOP chip14-09-04

HitachiG7P Mk2Trips at sw onC737 100µ in trip cct o/c14-09-04
HitachiG7P Mk2Tuning drift & nothing tuneable above Ch36Only 7v across 33v zener. IC101 HD401304R12S faulty14-09-04
HitachiG7P Mk2Won't start up again aft being switched offR913 100R in base of chopper tr o/c14-09-04
HitachiG7PMk2 CPT2808To bypass Txt panel when a fault here is suspected of causing pic faultShorting pins 2 & 3 of the 5 pin connector (E001) on the main board. This links the video in to the sync out lines, thus restoring normal picture and sound.14-09-04
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