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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: 19
JVC25S1No sync in off air & AV modeNo sync pulses at IC201; IC103 -(Mc4066BF. SMD) on Text Board14-09-04
JVC25S1EK MXIINO VISION - WONT TUNE INC119 47n IF UNIT. ON PIN 2 IC 10114-09-04

JVC25S1EK MXIIStBy LED changes red to gren but no line driveCheck Q902 V if missing R903 ( 2K2 ) o/c14-09-04
JVCAV25GS1EK & AV25S1EK etcDead - HT starts to rise then decaysD521 BY228 in EW cct14-09-04
JVCAV25S1EKAt sw on LED red then green, red then out - deadC468 (4u7F 50v) blown its top and R526 (39R 0.5w)burnt also D521 (BY228) s/c14-09-04
JVCAV25S1EKDead or int dead - front LED operates ok & HT/LT readings okCheck R903 & 904 2k2 & dry joints on st/by trs Q902 & 901 near them14-09-04
JVCAV25S1EKDIM PICC1206 LEAKY 3.3mfd14-09-04
JVCAV25S1EKDim pic with green tintNo volts at IC201 contrast control pin as C1206 3µ3 leaky14-09-04
JVCAV25S1EKField collapseTDA3654 FOP chip14-09-04
JVCAV25S1EKFRAME COLLAPSEREPLACE FRAME IC TDA365414-09-04
JVCAV25S1EKLED COMES ON AND THEN GOES RED THEN OFFCHECK FOR S/C E/W STAGE R526, C458 AND D521 39 OHM, 4.7MFD50V AND BY22814-09-04
JVCAV25S1EKLed goes red, then green then off at sw on - no startR526 39R, C458 4µ7 50v & D521 BY228 in E/W cct14-09-04
JVCAV25S1EKNO LINE DRIVER903 2.2k BASE BIAS TO Q902 SLIGHTLY HIGH14-09-04
JVCAV25S1EKShuts down at sw onD521 BY228 s/c, C468 47µ, R526 0R22?14-09-04
JVCAV25S1EKShuts down immediately after sw onD521 BY228 s/c, C468 47µ , R526 0R214-09-04
JVCAV25S1EK Mk2Always comes on in st/by - sometimes at full volEEPROM IC104 corrupt - pt no CAT93C66P14-09-04
JVCAV25S1EK MXIIUnstable pic with line jitterVideo o/p from IF module has ragged sync pulses - 1µ elect cap in AGC feed14-09-04
JVCAV28S1EK AV25S1EK MX2St/by light changes col but no line driveNo supply to line dr tfmr as R903 2k2 hi res (switches st/by tr Q902)14-09-04
JVCAV28S1EK AV25S1EK MX2Width & E-W faultyReplaced memory chip for electronic screwdriver - 24C01A/P IC170714-09-04
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