jvc Repair Tips

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Make	Model Ch.	Symptom	Problem Solution
JVC	AV28F1EK JX	Int reverts to st/by	check for dry joints on regs IC521/522
JVC	AV28F1EK	Pic/sound int disappears to blank raster	AGC preset dry jointed
JVC	AV28F1EK	NO SOUND	ICP ON AUDIO SUB - PCB ( CHECK 12V ON R911 )
JVC	AV28F1EK	NO NICAM LED	D102 DRY ( GREEN LED )
JVC	AV28F1EK	INT LOSS OF SOUND AND PICTURE	AGC PRESET INT OC
JVC	AV28F1EG	Int line sync/ col/pic break up from cold	Blanket solder signals board
JVC	AV28F1EG	Flyback lines at top of pic	Dry joints FOP chip
JVC	AV25VM1EK	St/by only & no line drive	TDA8366 jungle chip IC101 pin 35 8v supply missing as IC951 8v reg faulty KIA7808PI
JVC	AV25VM1EK	Field to & bottom cramp	IC401 Field/EW chip TDA8350Q
JVC	AV25VM1 JA	Blank raster with fb lines & top cramping	FOP IC TDA8350
JVC	AV25VM1	St/by only	IC951 KIA7808P 8v reg also replaced Q953 2SA966 & Q954 2PC1815
JVC	AV25TS2EK	Crackling on sound at sw on until warm	SAWF SF012 - fit improved type CE42606-T01
JVC	AV25SXEK JH	Small pic then reverts to st/by	Line tuning cap C521 (4n 1.5kV for 29" sets (part QFZ0152-4001) or 3n6 1.8kV for 25" (part QFZ0122-362)).
JVC	AV25SX2EK	SMALL PICTURE WITH NO DISTORTION	REPLACE C521 3000PFD16KV
JVC	AV25SX2EK	Small pic	C521 3000pF 1.6kv "S" corr cap changed value
JVC	AV25SX2EK	PICTURE FLUCTUATES ON AND OFF	CHECK D582 FOR S/C (6.8V ZENER)
JVC	AV25SX2EK	Pic comes on for 5 secs at sw on then off	X ray prot active due to D582 BZV85C6V8 s/c causing Q573 base to rise
JVC	AV25SX2EK	No sound - pic ok	R617 overheats due to C613 100µ 25v s/c (no 5v suppl)
JVC	AV25SX2EK	NO SOUND	REPLACE S/C C613 100MFD25V
JVC	AV25SX1EK JA	Int pic blanking out	TDA8350Q vertical output chip (IC401). If R971 if fitted & overheating, remove it (should not be fitted in UK models)