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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
PanasonicZ3 ChassisFailed to start - int, with no R/C operation5v supply from small trfmr at TPE2 = 4.4v; D1124 5v1 zener leaky14-09-04
PanasonicZ3 ChassisFailure to startR802 330k o/c - bias provider for chopper chip14-09-04

PanasonicZ3 ChassisField - reduced height with poor linC404 4µ7 50v14-09-04
PanasonicZ3 ChassisField lin - top stretched & bottom compressedC458 4µ7 or 10µ 50v14-09-04
PanasonicZ3 ChassisField scan cramped at bottom at sw onIC451 TDA3653C FOP chip14-09-04
PanasonicZ3 ChassisInt deadIC1101 reset line slightly low ; C1122 0µ01 leaky14-09-04
PanasonicZ3 ChassisInt picHairline cracks around line dr trfmr T53114-09-04
PanasonicZ3 ChassisNo colorC616 10nF 50v leaky - pin 29 IC10114-09-04
PanasonicZ3 ChassisNo start upWorks ok when pin15 (X ray prot) IC101 is grounded; R560 270k near plug E7 o/c14-09-04
PanasonicZ3 ChassisReverts to st/by with rush of EHTHT correct - no line drive; removing prot tr Q451 revealed field collapse caused by D453 MA2270 zener diode - the cause of this fault was traced to flashover in crt14-09-04
PanasonicZ3 ChassisSt/by onlyIC1101 micro pin 6 should be high (power on command) but wasn't as chip not being reset. IC1104 resets IC1101 when its supply reaches 5v but didn't reach this level as zener D810 in the 5v reg cct was leaky14-09-04
PanasonicZ3 ChassisTrips at sw onCheck start up resistors R560 270k & R552 27k for hi res14-09-04
PanasonicZ3 ChassisTuning driftsC17 10nF ceramic cap leaky14-09-04
PanasonicZ3-TReplacement of TDA4505M-N3You can use cheaper TDA4505E if re-align afc coil only14-09-04
PanasonicZ3-TTDA4505M-N3 replacement by TDA4505ERe-align AFC as nec only14-09-04
PanasonicZ3TBrightness correct top left out bottom right.Q306 collector-to-emitter leak.14-09-04
PanasonicZ3TDead - st/by onlyNo HT - STR54041 faulty14-09-04
PanasonicZ3TDead with squealLOPTr 2SD1439 leaky - used BU508D - resold Line dr tfmr T53114-09-04
PanasonicZ3TField collapse & lin intDry joints TDA4505 IF/timebase chip under metal can14-09-04
PanasonicZ3TFIELD CRAMPING WHEN COLDTDA3653C IC45114-09-04
PanasonicZ3TField scan distorted - int collapseDry joint IC101 IF/TB gen TDA4505M esp pin 214-09-04
PanasonicZ3TStartup - no start up - intermittent.D1124 ( 5.1V ) zener leaky.14-09-04

PanasonicZ4Blows lop transistors periodicallyCheck right type fitted - should be 2SD1541LB14-09-04
PanasonicZ4BRIGHTNESS SLOWLY INCREASES UNTIL SCREEN COVERED IR380 680k ON CRT PCB OC14-09-04
PanasonicZ4Dead270k START UP RESISTOR IN POWER SUPPLY OC14-09-04
PanasonicZ4DeadR802 4R7 o/c; IC801 STR54041 s/c; C808 10µ 63v, Q801 & 2 2SD965 leaky. Note:- C809 = 10µ 6.3v14-09-04
PanasonicZ4Dead - slight eht rustle at sw on - no st/byWorks on reduced mains 100v; - STR54041-M14-09-04
PanasonicZ4dead - STR54041 blown also Q801, 802, R802happens every few weeks - checked mains plug & deguassing positor14-09-04
PanasonicZ4DOTS ON PICTURE ONLY WHEN USED ON INDOOR AERIALDRY JOINT ON COIL INSIDE TUNER UNIT ( JUST ABOVE PIN FURTHEST FROM AER. SOCKET )14-09-04
PanasonicZ4FIELD ROLL FROM COLDC402 3u3 TANTALUM US14-09-04
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