Panasonic TV Repair: Common Faults and Solutions.

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Panasonic Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem
PANASONIC	ALPHA 2	Int flashing and going off	Check dag earthing and fixing bolts ( remove q802 to prevent set switching off )
PANASONIC	ALPHA 2	Int colour + poor colour at max setting of col. co	Dl601 delay line
PANASONIC	ALPHA 2	High pitched whistle - picture ok.	Drys on loptx overwinding.
PANASONIC	ALPHA 2	Goes to st/by 1 sec after sw on	No 12v as l303 10µh in 12v feed o/c
PANASONIC	ALPHA 2	Frame collapse.	C403 ( 10nf ) pin 2 of tda2579.
PANASONIC	ALPHA 2	Field collapse with blanked out pic	C403 10nf pin 2 tda2579
PANASONIC	ALPHA 2	Field collapse , no 25v on pin 3 an5521	R848 800ma fuse oc ( behind field op ic )
PANASONIC	ALPHA 2	Field collapse	Check volts at pins 3 & 7 of an5521 fop chip - should be 25v. if zero, check r484 800ma fuse for o/c
PANASONIC	ALPHA 2	Field collapse	C403 10nf connected to pin 2 tda2579 timebase chip leaky
PANASONIC	ALPHA 2	Field collapse	R484 fusible o/c - used 1r5 1/8w
PANASONIC	ALPHA 2	Field collapse	R484 o/c replace with cp n25
PANASONIC	ALPHA 2	Field collapse	C400
PANASONIC	ALPHA 2	Field collapse	C403 0.01mfd
PANASONIC	ALPHA 2	Field collapse	Check tda2579a and c403 ( 0.01mfd ) pin 2
PANASONIC	ALPHA 2	Field - top foldover	An5521 fop chip
PANASONIC	ALPHA 2	Field - hor lines/pairing	R469 470r hi res
PANASONIC	ALPHA 2	Ew fault some times int	C754 180pf
PANASONIC	ALPHA 2	E-w dist	C754 180pf in ew parabola cct
PANASONIC	ALPHA 2	Dead.	D851 ( c2408m ) s/c or leaky.
PANASONIC	ALPHA 2	Dead with whistle from psu	D854 avalanche diode s/c ;replace chopper chip ic801, d854 & check d807, r815, c808.- loptr q551 2sd1441rl s/c