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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: 51
Proline5100RCNo pic - field coll noticed when A1 advanced, sound okReplace o/c 0R22 fusible resistor (R433) feeding the frame chip. The Frame output chip was O.K.14-09-04
ProlineF19Service mode enteringSw on TV whilst holding in Vol+ on TV & within 3 secs sw on TV using st/by button on hset. This should reveal window on screen. Use Prog+ & - on hset to change parameter, & Vol + & - to change value.. Store using yellow MEM button14-09-04

ProlineF205T Formenti PC230Dead - mains i/p fuse blownC415 1nf 1kv (blue pulse type) situated near the SMTX on the primary side. It was split14-09-04
ProlineNV2100no pic, no sound. HT Ok but no 18V supply to line driverresolder end pin of AV PCB connection to main PCB (left end of PCB when looking from rear of set, the 18V is fed thru this PCB)14-09-04
ProlineNV2100NO SOUND OR PICTURE RASTER OKDRY JOINT ON END PIN ON AV BOARD (LEFT END)14-09-04
ProlineNV2700BLOWS FIELD CHIP AND 2R2CHECK 100mfd C306 ( ON LOPT SIDE OF HEAT SINK )14-09-04
ProlineNV3200Cuts out has to be switched off then back on againD/J around Chopper TR heatsink14-09-04
ProlineNV3200Field fback linesC432 100µ 63v14-09-04
ProlineNV3200frame foldover at the topC432 next to frame IC14-09-04
ProlineNV3200no sound when cold, then distorted, then Ok after 6-7 minreplace IC701 LA7955 situated on the AV PCB14-09-04
ProlineNV3200WONT DISPLAY TIMEINITIAL TEXT PAGE HAS TO BE SET UP BEFORE TIME WILL WORK ( INITIALLY SET TO "000" BY MANUFACTURER )14-09-04
ProlineTATUCONTRAST NOT WORKINGR 430 120k OFF THE LOPT. ( CONTRAST D.C. LINE )14-09-04
ProlineTN2800flyback lines on the topC428 100uF 35V next to frame IC14-09-04
ProlineTN2800Lines at top of screenFlyback boost cap C432 100µ 35v14-09-04
ProlineTN2800no sound when cold, then distorted, then Ok after 6-7 minreplace IC701 LA7955 situated on the AV PCB14-09-04
ProlineTN2800not memorising channelscheck for -28V on pin 28 and +5V on pin 8 of IC106, if these are correct, replace IC101 OEC8032B and IC102 MN122014-09-04
ProlineTVC140Blank, bright raster with fb linesIC45 (TDA6107Q) on tube base, also R996 (56 ohm) also on tube base, 180 volt feed r to IC.14-09-04
ProlineTVC140Dead - LOPTr 2SD2578 (with integral diode) s/cReplaced with BU508D - now have bright raster with fb lines - IC45 TDA6107Q RGB o/p chip & R996 56R 2w o/c on crt base14-09-04
ProlineTVR140"HEAT RUN" displayedEEPROM replaced14-09-04
ProlineTX807 1415TSnowy pic - tuner low gainResolder earthing points on tuner14-09-04
ProlineW28D1 DaewooExcess width with bowingPin 8 of frame IC short to chassis. Replace I301 TDA8358J14-09-04
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