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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: 59
FinlandiaC22VZ3No startup.R46 ( 15k 9watt )14-09-04
HitachiC2514Z311Hotel mode - stuck inHold in Vol + & Vol- whilst sw on, when display appears with symbols increase vol to level reqd14-09-04

PanasonicTC1785 Z3Dead aft 5 minsSTR50103A-M (use Pan spec version - others won't work properly)14-09-04
PanasonicTC195 Z3 ChassisAt sw on led blinks once onlythen dead, if powered up with mains sw on led lit permD811 opto faulty. To check, s/c pri pins of oto coupler when it should then work ok. On normal operation you have 1,2Volts on the secondary side pins, that drop to 0,6V on standby. 14-09-04
PanasonicTC2195 Z3Dead but whinesR556 1A cct prot o/c, T531 line dr trfmr dry joints, LOPTr 2SD1439 leaky NOTE LOPTx may test faulty on LOPT tester but may not be - as I found out14-09-04
PanasonicTX143T Z375 ChassisTripping - st/by led flashingLOPTx14-09-04
PanasonicTX14B3T Z375 chassisField collapse noticed when A1s advancedIC301 TDA8456 - also do following mod - change C309 to 22µ 100v, add 0µ01 across R310 & fit 2R2 1w in place of jumper R42014-09-04
PanasonicZ3COLOUR AT MAX OSD MOVESD1149 LEAKY14-09-04
PanasonicZ3Dead D816 s/cReplace STR50103 chopper IC14-09-04
PanasonicZ3Dead - st/by onlys/c on HT line - D816 R2G overvolts diode - replace STR50103A14-09-04
PanasonicZ3dead - STR50103 s/creplaced also prot diode and positor14-09-04
PanasonicZ3Dead with groaning sound100v HT present, no line drive, prot tr Q451 operating. When removed field coll . No 25v to field chip - R467 1R8 o/c14-09-04
PanasonicZ3Fails to startR802 ( 330K ) bias to chopper chip o/c14-09-04
PanasonicZ3IF BRIGHTNESS TURNED UP SET TRIPS OFFR316 47k OC14-09-04
PanasonicZ3INT DEAD WHEN OFF IC1101 RESET PIN 6 LOWCheck Q804 5V reg D810 5V zen & C1122 ( 0.01uF )14-09-04
PanasonicZ3Int loss of picCheck for cracks in print around T531 line drive TX14-09-04
PanasonicZ3INT NO PICTURELINE DRIVER TX DRY14-09-04
PanasonicZ3No col - pink screen with Hanover barsC601 10nf disc ceramic cap in PAL DL leaky14-09-04
PanasonicZ3NO COLOURC616 ON IC101 PIN 29 10nF 50v Ceramic14-09-04
PanasonicZ3No picD453 22v zener in field cct s/c - also suspect LOPTx14-09-04
PanasonicZ3No pic - sound okCheck for dry joints on crt socket14-09-04
PanasonicZ3NO START UP. IF PIN 15 IC101 SHORTED TO CHASSIS SECHECK FEEDS TO Q50214-09-04

PanasonicZ3NO TUNINGC17 0.01uF SC14-09-04
PanasonicZ3Picture size flutters and set goes to StBy int.STR50103A us14-09-04
PanasonicZ3POOR FIELD LIN top expanded bottom compressedC458 MAY BE 10uF 50v OR 4u7 50v14-09-04
PanasonicZ3POWERS UP THEN GOES DEADREMOVE Q451 POWER UP ON VARIAC , IF FIELD COLLAPSE CHECK D4539 ON ODD OCCASIONS FLASHOVERS IN TUBE CAUSE DIODE TO FAIL14-09-04
PanasonicZ3Reduced height poor linearityC404 ( 4u7 ) 50V14-09-04
PanasonicZ3Set buzzes from PSU but deadIf pin 15 IC101 high ( X-ray protection ) try shorting to chassis , if set ok check Q502 and R560 270k14-09-04
PanasonicZ3STUCK IN STBY IC1104 5v RAIL LOW AT 4vQ804 OR ZENER DIODE D81014-09-04
PanasonicZ3TRIPS OFFR560 270k R552 27k14-09-04
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