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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: 22
JVCAV28WR4EKCrackle on sound oc Sky dig via scart - ok on RFAudio o/p of dig Rx set too high - enter system set up in Menu & adj/store vol in audio menu14-09-04
JVCAV28WR4EKPic shifted to right in all modes - may be intLoss of hor fback pulses to IC101 due to Q501 2SC1815 s/c14-09-04

JVCAV28WR4EKSDeadReplaced s/c MC44604P chopper chip, CP953 blown, optocoupler TLP721FD4GR and the error amp SE-135N finally cured the problem (HT was rising above its correct 145v)14-09-04
PanasonicEuro 4 TXW28R4DPAttempts to start with a burst of EHT but reverts to stbyReplace D558 1SR124-4AT82 S/C use BYD33M & R559 R33 Safety in supply to FOP ic. replaced LOPTr with beefed up one from Pan & resoldered line driver Tx & dry joints in LOPstage.14-09-04
PanasonicEURO4 TXW28R4DPdead, read LED onLOPTr Q551 s/c, use kit TZS9EK00114-09-04
PanasonicEURO4 TXW28R4DPno sound when rear speakers connectedreplace IC2704 TDA2030AV14-09-04
PanasonicEURO4 TXW28R4DPstuck in stbyLOPTr Q551 s/c, use kit TZS9EK00114-09-04
PanasonicEURO4 TXW32R4sound srackling, vol goes up and downreplace IC251 LA4282 on E board14-09-04
PanasonicTXw-28-R4trippinglop tr s/c BU250BAX use 2SD1577LB as replacement14-09-04
PanasonicTXW28R4St/by only LOPTr s/c (BU2508AXLB)Replaced by 2SD1577LB for greater reliability14-09-04
PanasonicTXW28R4Trips to st/by intC464 220nF had a 22nF cap fitted in error14-09-04
PanasonicTXW28R4DPSw off aft 15 secs - sound & pic okR558 120k by LOPTx fback from beam lim to prot cct14-09-04
PanasonicTXW28R4DP Euro4Blnk raster - no OSDMicroprocessor IC1101 part number SDA5450C48 (30 UKP +VAT).14-09-04
PanasonicTXW28R4DP Euro4No sigs - snow only on screenleaky SMD transistor marked "BR" inside IF section of the tuner. I used MSB1218ART114-09-04
PanasonicTXW28R4DP Euro4Sound dist from lh speakersound processor IC2102 MSP3410D part number MSP3410DPOB4 14-09-04
Toshiba140R4BSTATIONS CAN BE TUNED IN BUT LOSES BBC2 AFTER CHANTMM842P MEMORY IC14-09-04
Toshiba140R4BThe picture was dark , with erratic diagonal lines ,A slight tweak of the detector coil L103 cured the fault.14-09-04
Toshiba140R4BTripping - flashing.2SC3715 Q404 dry.14-09-04
Toshiba159R4BTEXT LINES AT TOPD20314-09-04
Toshiba199R4BFrame collapse.IC303 , R317 o/c.14-09-04
Toshiba199R4BINT. SOUND-VISION WHISTLING NOISE?CHECK LOPTY14-09-04
Toshiba213R4BInt / perm field collapse no drive at pin 1 TDA365C312 10nF sc14-09-04
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