Dicas Reparação Jvc








Pesquisa: jvc

Resultados 407

Dicas de reparação para: jvc
MarcaModelo
(Chassis)
SintomaCausaSoluçãoPor:
JVCCS2190EK BXIIReverts to st/by aft 20 mins - 115v HT disappearsCP901 N55 cct prot hi res
JVCCS2181EKT BYXComes on in AV mode - when TV selected all chans tuned to same stationThe -30v supply to memory chip on tuning panel falls below -26v. Replace some/all of following: Q956 2SA1015, C959 3µ3 50v, C958 33µ 35v, C016 10µ 16v, C017 10µ 50v sm.
JVCCS2181EKTTuning int lost on chan changeReplace C958, C959, C16, C17 & check for dry joints
JVCCS2181EKTOff tune at sw on gradually tunes inCO16 10µ 16v sm in s.select module
JVCCS2181EKTNo signals - Ok via scart socket.IC M54477L in tuner ( NLA ) req new tuner.
JVCCS2181EKTNo signalsNo o/p from Prescaler chip M54477L in tuner - chip unavailable so replacement tuner reqd at £40 +
JVCCS2181EKTAll stations reverted to chan 21 & tunes but no chan storeCheck sm elects in station select module for leakage
JVCCS2181EKLow gain esp at higher end of bandAGC pot replaced
JVCCS2180EKTuning driftStation select module SBX-M904A(E)
JVCCJT21EKSound dist aft 15 minsIC651 AN5265
JVCCJT21EKDead - no start up volts pin 4 IC921Has lowish res both ways between pin 4 & chassis of STRF6653 - chip faulty
JVCC21TX1EKNo syncSync signal goes thro Txt panel - X002 6Mhz Xtal was faulty with no osc
JVCC21TX1EKNO SYNCX002 6Mhz XTAL US ON TEXT PCB
JVCC21M3EK OnwaNo soundIC601 micro has no PWM o/p on vol cont pin - chip faulty
JVCC21M3EK OnwaField collapse, no sound after replacing C909/911 R419 & 12v ZenerR421 0R68 ½w fusible o/c; D406 s/c - used BY228




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