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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
PanasonicU3WDark pic with field foldoverQ552 12V reg o/c14-09-04
PanasonicU3WLack of width & brighter on right hand side.EW modulator diodes D552 ( TVSC2715M ) , D553 ( TVSC2406M )14-09-04

PanasonicU3WLine tearing.C853 ( 100u f ) , C854 ( 47u f )14-09-04
PanasonicU3WNo sigs or chan display from coldTMS3453N2L memory chip (?31 from WVE)14-09-04
PanasonicU3WVerticals corrugated - noise at switch on.C809 ( 1u f 350v )14-09-04
PanasonicU4Blank raster & no sound.L102 o/c.14-09-04
PanasonicU4Comes on in standby if on/off switch is used.Relay RY1001 carbonised contacts.14-09-04
PanasonicU4COMES ON THEN SHUTS OFFC808 47u 16v14-09-04
PanasonicU4Dead - no EHT - diplay = 00 ; HT = 60vLOPTx u/s tho' checked ok on tester - NLA?14-09-04
PanasonicU4Memory loss - intermittent.Re-solder crystals associated with MAB8440 & SAB3055.14-09-04
PanasonicU4No R/C operationNo 12v to r/c Rx; R1336 150R hi res; & replace 12v zener14-09-04
PanasonicU4No sound & blank raster.L102 o/c.14-09-04
PanasonicU4No sound or sync.DJ on pins of socket Z6.14-09-04
PanasonicU4SET STARTS UP BUT SHUTS DOWN INSTANTLYC808 47uF 16v OC14-09-04
PanasonicU4Standby - comes on in standby.Relay RY1001 carbonised contacts.14-09-04
PanasonicU4Sync - no sync or sound.DJ on pins of socket Z6.14-09-04
PanasonicU4Tuning - intermittent.IC SAB3035 IC dry jointed.14-09-04
PanasonicU4 TXC21No power up or relay actionR1351 0R68 0.25w fusible o/c14-09-04
PanasonicU4WDisplay - shows 00 - no sound or picture.HT set to high C808 ( 47u f , 25v ) in PSU.14-09-04
PanasonicU4WSquealing - low HT.C854 ( 100u f , 250v ) , D557 ( BY299 ) , last LOPTX.14-09-04
PanasonicU5Blank raster - sound ok - brightness worksTDA3562A u/s14-09-04
PanasonicU5Channels - no channel changeDrys on Q551.14-09-04

PanasonicU5Channels - poor channel change & picture.Drys on Xtal X171 , faulty IC171.14-09-04
PanasonicU5Dark picTDA3562A14-09-04
PanasonicU5DeadQ551 LOPTr s/c & IC501 TDA2579 timebase gen chip faulty14-09-04
PanasonicU5Dead - chopper tr blowsR803 330k o/c14-09-04
PanasonicU5E-W faultyQ753 EW driver 2SD1265P dry joints or faulty14-09-04
PanasonicU5HT volts variesD806 zener RD6-2EB214-09-04
PanasonicU5Int deadDry joints scan coil plug 14-09-04
PanasonicU5Int dead with whineDry joints LOPTr -emitter14-09-04
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