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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: 77
Nokia20R19INT START UPC714 330nf ( GONE HIGH IN VALUE ) S2 - S3 CHASSIS.14-09-04
Nokia21S4C EuromonoSigs intOC38 1000uF 16V, OC44 1000uF 16V and OC40 100uF 25V14-09-04

Nokia25N8CDeads/c across Lop tr traced to s/c windings on Loptx pins 3 & 514-09-04
Nokia3711VCTDead - psu low outputsLOPTr leaky (tested ok), when replaced HT 200v, R555 47k o/c, FOP chip LA7837 & opto coupler - can use CNX62 in place of PC113 14-09-04
Nokia3724 MonoplusTrippings/c across U" 12v supply - pin 2 RGB o/p IC TEA5101N/B on crt base s/c14-09-04
Nokia3724UKNo start up - intV0005 11v zener in start up cct supply to TEA2164G14-09-04
Nokia3724UKFX Mono PlusDull pic with poor vid content when warmFault on Txt panel proved by bypassing Txt panel by shorting JL03 - VR14 BC848B sm leaky14-09-04
Nokia3725weak lumreplaced txt pcb14-09-04
Nokia3742ALow contrastTDA836214-09-04
Nokia4030 Core 90St/by onlyC701 10 uf/250V. in PSU and C734 10uF/350V in secondary14-09-04
Nokia5156 Stereo PlusNo sound or just faint noiseDis pins 7 & 9 at Nicam module. If sound returns VA60 BC857 & VA61 BC847 are sus (mute trs )14-09-04
Nokia5354UKSFNCrackle on NICAM soundMSP2400 sound proc IC & reset eeprom values14-09-04
Nokia5524FXContrast weakCF25 100nF sm s/c, Diode VF08 LL4148 & CD42 faulty14-09-04
Nokia5524FXDeadLine driver tr o/c (blasted), fitted BC327 (pnp) in lieu14-09-04
Nokia5524UK FXDead then Slow start up from coldCO33 10µ 160v HT reservoir cap14-09-04
Nokia5552Dead - shows 2 dashes when switched onFlashing green LED when brought out of st/by; will not run on dummy load unless c-e of T742 are s/c (Follow pin 2 of IC742). (When psu is run on dummy load it is normal to get no front display & flashing G LED) Fault was D502 leaky14-09-04
Nokia6320 UK Core 1INT NO PIC OR FRONT DISPLAYCHANGE 10mfd 160v14-09-04
Nokia6332 Euromono 110' ChassisRandom thick black spots in picture, varying in shape and size according to picture contrast and brightness.Replace SMD transistor 4T06 (BC858) next to U4647 chip.14-09-04
Nokia6332 Euromono 110' ChassisRandom thick black spots in picture, varying in shape and size according to picture contrast and brightness.Replace SMD transistor 4T06 (BC858) next to U4647 chip.14-09-04
Nokia6332UKDead - trippingS2000AF s/c - check for dry joints at 5C10214-09-04
Nokia6354Int crackle & loss of sound on rh chanSig ok pin28 7 29 DACM chip NA10 but not ok at pin 9 TDA2615 NA90. - VA80 BC858B sm was noisy & the cause of both faults14-09-04
Nokia6355UKParts of field blanked giving venetian blind effectRS11 220R14-09-04

Nokia6357Service mode accessOn handset press "menu", "p" , "-", "+", vol "-", vol "+', - "menu", "p" ,changes menu, "m" memory "tv" exit.14-09-04
Nokia6361 D-E FSTPic dark at one side light at otherC525 10µ 50v in 12v supply14-09-04
Nokia6364UK SFNDead - lop tr S2000AF s/cdry joints tuning caps next to it14-09-04
Nokia6364UKSFNE-W fault symptomC515 2µ214-09-04
Nokia6365Pic takes 20 mins to appearModule that supplies G2 volts faulty pt no 57109W (WVE)14-09-04
Nokia6365UK Stereo PlusField - top foldoverTDA83550Q FOP chip14-09-04
Nokia6630LINE DOWN RH SIDECHECK 470 mfd LT LINE14-09-04
Nokia6630 Core 2Blank raster with fback linesPin 2 LOPTx dry joint14-09-04
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