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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: 1049
PanasonicZ4Flyback lines - over bright picture.R380 ( 680k ) o/c not through PCB properly.14-09-04
PanasonicZ4INT CHROMAC2651 INT OC ON BOARD C NEAR IC2651 ( CHROMA SWITCH IC )14-09-04

PanasonicZ4Int failure to startCheck dry joints but LOPTr was responsible this time14-09-04
PanasonicZ4INT FIELD COLLAPSECheck V at pin 2 IC451 if high replace C402 3.3mfd , BLUE TANT on C board14-09-04
PanasonicZ4Int no pic =- OSD okcrack in print on video board between Q302 em & C30214-09-04
PanasonicZ4Letter 'C' towards left centre of screen.Reprograme microcomputer see Tv mag.14-09-04
PanasonicZ4Line osc running fastAN5603K IC601 faulty14-09-04
PanasonicZ4No sound for 1st 1/2 hour pic shifted to one sideC503 ( 0.01uF )14-09-04
PanasonicZ4NO SYNC ( CLOCK AND DATA LINES SHOW LOWER THAN NORMAB8461-PW216 TEXT CONTROL IC. - IC350714-09-04
PanasonicZ4NO VIDEO , FAINT LINES IN BACKGROUND180pf CAP PIN 14 , IC52114-09-04
PanasonicZ4Over bright picture - with flyback lines.R380 ( 680k ) o/c not through PCB properly.14-09-04
PanasonicZ4POWERS UP THEN GOES DEADCHECK Q558 , Q541 , Q54214-09-04
PanasonicZ4set displays "C" in left Centre of screenMicro req's reset Hold down VOL button on set while pressing TIMER but on Handset Should display colum of OK's & reset14-09-04
PanasonicZ4STATIONS TUNED TO ONE POSITION ALREADY HOLDING TUCHECK AROUND TEXT PCB LINK J10 etc14-09-04
PanasonicZ4Stores one channel in all locationsEPROM (IC1202)24CO2AB114-09-04
PanasonicZ4Strange faults.Reprograme microcomputer see Tv mag.14-09-04
PanasonicZ4SWITCHES ON BUT DIESQ558 2SA87914-09-04
PanasonicZ4TUNING DRIFTTUNER UNIT14-09-04
PanasonicZ4TUNING DRIFT NO SOUND NO SOUND OSDQ1272 3 4 OR MORE LIKELY C524 180pF14-09-04
PanasonicZ4Tuning drift - sound muted.C524 ( 180pf ) leaky.14-09-04
PanasonicZ4 ChassisBright green at sw on & int cuts outC350 on crt base14-09-04
PanasonicZ4 ChassisCol int low or absentC2651 0µ01 sm int o/c14-09-04

PanasonicZ4 ChassisComes on with field collapse - gradually opens up then int shuts downC462 470pF ceramic cap leaky in FOP cct14-09-04
PanasonicZ4 ChassisDead - blank raster when optocoupler overiddenNo activity from main micro - IC1202 EEPROM ST24C02A faulty14-09-04
PanasonicZ4 ChassisDead - surge lim res R802 4R7 5W o/cSTR54041M IC801 & Q801/2 s/c & D854 overvolts prot diode s/c. C809 0µ1feedback cap was the cause (caused excessive HT) also change C808 10µ 63v14-09-04
PanasonicZ4 ChassisDead after initial burst of lifeTrips even with LOP stage dis'd - fault in prot cct - Q558 2SA879 faulty tho checked ok out of cct14-09-04
PanasonicZ4 ChassisField int collapses or rollsC402 3µ3 tant cap in Field osc stage14-09-04
PanasonicZ4 ChassisInt loss of soundCheck conns to speakers14-09-04
PanasonicZ4 ChassisLetter "C" displayed towards left/centre of screenReset micro by pressing VOL- button on TV whilst pressing Timer button on Hset - Oks then displayed14-09-04
PanasonicZ4 ChassisNo sound and half a pic (shifted over)C503 0µ01 cap across line shift control leaky14-09-04
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