Jvc AV25S1EK TV Repair: Common Faults and Solutions.

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Jvc AV25S1EK Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
JVC	AV25S1EK	Field collapse	Resolder tda3654 as joints appear good but on application of soldering iron show to be dry
JVC	AV25S1EK	Field collapse	Resolder tda3654 as joints appear good but on application of soldering iron show to be dry
JVC	AV28S1EK AV25S1EK MX2	Width & e-w faulty	Replaced memory chip for electronic screwdriver - 24c01a/p ic1707
JVC	AV28S1EK AV25S1EK MX2	St/by light changes col but no line drive	No supply to line dr tfmr as r903 2k2 hi res (switches st/by tr q902)
JVC	AV25S1EK MXII	Unstable pic with line jitter	Video o/p from if module has ragged sync pulses - 1µ elect cap in agc feed
JVC	AV25S1EK MK2	Always comes on in st/by - sometimes at full vol	Eeprom ic104 corrupt - pt no cat93c66p
JVC	AV25S1EK	Shuts down immediately after sw on	D521 by228 s/c, c468 47µ , r526 0r2
JVC	AV25S1EK	Shuts down at sw on	D521 by228 s/c, c468 47µ, r526 0r22?
JVC	AV25S1EK	No line drive	R903 2.2k base bias to q902 slightly high
JVC	AV25S1EK	Led goes red, then green then off at sw on - no start	R526 39r, c458 4µ7 50v & d521 by228 in e/w cct
JVC	AV25S1EK	Led comes on and then goes red then off	Check for s/c e/w stage r526, c458 and d521 39Ω, 4.7mfd50v and by228
JVC	AV25S1EK	Frame collapse	Replace frame ic tda3654
JVC	AV25S1EK	Field collapse	Tda3654 fop chip
JVC	AV25S1EK	Dim pic with green tint	No volts at ic201 contrast control pin as c1206 3µ3 leaky
JVC	AV25S1EK	Dim pic	C1206 leaky 3.3mfd
JVC	AV25S1EK	Dead or int dead - front led operates ok & ht/lt readings ok	Check r903 & 904 2k2 & dry joints on st/by trs q902 & 901 near them
JVC	AV25S1EK	At sw on led red then green, red then out - dead	C468 (4u7f 50v) blown its top and r526 (39r 0.5w)burnt also d521 (by228) s/c
JVC	AV25GS1EK & AV25S1EK ETC	Dead - ht starts to rise then decays	D521 by228 in ew cct