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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: 4551
PhilipsNC3dead - 2A fuse o/c4R7 dropper o/c, BUT11AF chopper tr s/c, dry joints chopper tfmr & others14-09-04
PhilipsNC3Dead - blowing line output Tx BUT11AF Q501.Dry joints on LOPTX especially pin 10.14-09-04

PhilipsNC3Dead - blown chopper transistor.R418 o/c.14-09-04
PhilipsNC3Dead - chopper Q401 duff.Check for drys at connections to chopper Tx T402.14-09-04
PhilipsNC3Dead - went with bangburnt print around on/off sw also blew Q400 BC337 s/c; D404, 411, 407, 410 1N4148 s/c14-09-04
PhilipsNC3Dead chopper TR s/c R401 ( 4R7 ) o/cCheck for D/J around Chopper TX & LOPT14-09-04
PhilipsNC3DEAD WHISTLES DISCONNECTING PIN 2 LOPT AND SET RUNCHECK D2581 2582 8v2 ZENER OR THYRISTOR14-09-04
PhilipsNC3Dead with whistleOK on dummy load, Zener diodes 2581/2 8v2 leaky in crowbar trip cct14-09-04
PhilipsNC3Field - lack of heightR581 3M9 hi res connected to 95v supply in TDA4505 cct14-09-04
PhilipsNC3FIELD FOLDOVERR556 HIGH ( 24k )14-09-04
PhilipsNC3Goes into prot mode aft half an hour100v HT had gone high - CNX62 opto coupler faulty14-09-04
PhilipsNC3Horizontal lines & streaksC2413 100µ 400v o/c14-09-04
PhilipsNC3Int picR608 18R dry joint14-09-04
PhilipsNC3Intermittent poor picture & garbled sound.Channel change switch S300.14-09-04
PhilipsNC3Monochrome pic with false line lockMisshapen sandcastkle pulse caused by TDA4505 chip - also check 680k line pulse feed res14-09-04
PhilipsNC3Motorboating sound with green rasterC2483 dry joints had damaged 5v reg 78M0514-09-04
PhilipsNC3No colReplace TDA3565 dec chip & adj R635 ref osc. To adj s/c pins 5 & 1 of chip14-09-04
PhilipsNC3No colourTry adjusting R635.14-09-04
PhilipsNC3No colour - brightness/contrast inoperative.IC TDA4505.14-09-04
PhilipsNC3No pic - sound okNo A1 volts - LOPTx faulty14-09-04
PhilipsNC3No pic for first 2 hoursReplace TDA3565 dec chip & adj R635 ref osc. To adj s/c pins 5 & 1 of chip14-09-04
PhilipsNC3No pic just blank raster - sound okSandcastle pulse dist - break in print between R570 & SC gen o/p from IC pin2714-09-04

PhilipsNC3No picture & garbled sound.Channel change switch S300.14-09-04
PhilipsNC3NO SOUND AND POOR CONTRASTR416 10R OC14-09-04
PhilipsNC3No tuning adjust - original settings okBad contacts on chan switch14-09-04
PhilipsNC3Poor contrast & no soundR416 10R in 22v feed14-09-04
PhilipsNC3RASTER BLANK OSD WORKSTDA3565 US14-09-04
PhilipsNC3Ringing pic, weak & buzzing soundCheck SAWF & ceramic filters in IF14-09-04
PhilipsNC3Tuning indicator (green line) perm displayedC371 100µ 16v s/c14-09-04
PhilipsNC3-CRHorizontal striations over screen.C2413 ( 100uf , 400v ) o/c.14-09-04
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