Panasonic Repair Tips

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Make	Model	Symptom	Problem
PANASONIC	ALPHA 2 TX28W2	Dead - blows r555 ht supply fusible	Q366 2sc3311 s/c, q352 2sc4714 s/c on the crt and d551 s/c (used byd33j) in +200v supply
PANASONIC	ALPHA 2 TX24T1	Squeal from psu only with led lit	Check for 25v at d852 if missing then check for bad joints at chopper transformer
PANASONIC	ALPHA 2	Whistling int	Dry joints loptx overwind
PANASONIC	ALPHA 2	Video int disappears	Ic2601 m51326p av sw chip - to check, remove chip & jumper i/p pin 5 & o/p pin12
PANASONIC	ALPHA 2	Video disappears int sound ok	Link pins 5 & 12 of ic2601 if pic returns ic u/s
PANASONIC	ALPHA 2	Txt absent	C3517 10nf pin 15 ic3501 leaky
PANASONIC	ALPHA 2	Txt drifts across pic/flashing	C3511 220pf in 6mhz phase cct leaky
PANASONIC	ALPHA 2	Tuning int	R171 10k in tuning voltage line int
PANASONIC	ALPHA 2	Tuning goes off with ticking	Chopper chip str54041
PANASONIC	ALPHA 2	Tuning erratic & chans disappear	C15 2µ2
PANASONIC	ALPHA 2	Teletext - white bars over teletext	Mod
PANASONIC	ALPHA 2	Stuck in sby in the reset line to micro. remove r8	Check c1251 10nf
PANASONIC	ALPHA 2	Sound dist from 1 chan	C2442/1 100pf leaky
PANASONIC	ALPHA 2	Shuts down when warm	On3105 d811 optocoupler ( link pins 3 and 4 together to prove )
PANASONIC	ALPHA 2	Severe field distortion	R469 470r
PANASONIC	ALPHA 2	Set dead no line drive	Check r851 ( 2r2 )
PANASONIC	ALPHA 2	Set bursts into life then goes into stby leaving 3	L303 ( 10uh ) o/c in 12v circuit
PANASONIC	ALPHA 2	Servicing the alpha 2 chassis	See tv mag july 1997 & dec 1998
PANASONIC	ALPHA 2	Reference oscillator bars across screen.	C642 ( 10nf ) leaky.
PANASONIC	ALPHA 2	Red pic aft short while of operation	C353 220pf on crt base leaky