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Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair
Make
Model
Problem
Solution
Date
Found: 1049
Panasonic
Alpha 2
POOR CONTRAST
R562 ( 130K ) OPEN
14-09-04
Panasonic
Alpha 2
POOR EW
L752 SC
14-09-04
Panasonic
Alpha 2
POOR TEXT PERFORMANCE
C3507 100pf PIN 9 IC3501
14-09-04
Panasonic
Alpha 2
Q552 ( 2SD1441 ) s/c
Check for D/J on line drive TX T531
14-09-04
Panasonic
Alpha 2
Red content smeary & critical to set
Peaking coil in red o/p cct hi res
14-09-04
Panasonic
Alpha 2
Red pic aft short while of operation
C353 220pF on CRT base leaky
14-09-04
Panasonic
Alpha 2
Reference oscillator bars across screen.
C642 ( 10nF ) leaky.
14-09-04
Panasonic
Alpha 2
Servicing the Alpha 2 Chassis
See TV Mag July 1997 & Dec 1998
14-09-04
Panasonic
Alpha 2
Set bursts into life then goes into StBy leaving 3
L303 ( 10uH ) o/c in 12V circuit
14-09-04
Panasonic
Alpha 2
Set dead no line drive
Check R851 ( 2R2 )
14-09-04
Panasonic
Alpha 2
SEVERE FIELD DISTORTION
R469 470R
14-09-04
Panasonic
Alpha 2
SHUTS DOWN WHEN WARM
ON3105 D811 OPTOCOUPLER ( LINK PINS 3 AND 4 TOGETHER TO PROVE )
14-09-04
Panasonic
Alpha 2
Sound dist from 1 chan
C2442/1 100pF leaky
14-09-04
Panasonic
Alpha 2
STUCK IN SBY IN THE RESET LINE TO MICRO. REMOVE R8
CHECK C1251 10nf
14-09-04
Panasonic
Alpha 2
Teletext - white bars over teletext
Mod
14-09-04
Panasonic
Alpha 2
Tuning erratic & chans disappear
C15 2µ2
14-09-04
Panasonic
Alpha 2
Tuning goes off with ticking
Chopper chip STR54041
14-09-04
Panasonic
Alpha 2
Tuning int
R171 10k in tuning voltage line int
14-09-04
Panasonic
Alpha 2
Txt drifts across pic/flashing
C3511 220pf in 6Mhz phase cct leaky
14-09-04
Panasonic
Alpha 2
Txt absent
C3517 10nF pin 15 IC3501 leaky
14-09-04
Panasonic
Alpha 2
Video disappears int sound OK
link pins 5 & 12 of IC2601 if pic returns IC u/s
14-09-04
Panasonic
Alpha 2
Video int disappears
IC2601 M51326P AV sw chip - to check, remove chip & jumper I/P pin 5 & O/P pin12
14-09-04
Panasonic
Alpha 2
Whistling int
Dry joints LOPTx overwind
14-09-04
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
14-09-04
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
14-09-04
Panasonic
Alpha 2 TX28W2
Tries to start 3 times then dead
Loptx - focus volts too high - replace
14-09-04
Panasonic
Alpha 2A
NOISE ON NICAM
C2572 - C2573 220pf
14-09-04
Panasonic
Alpha 2A
SMEARY VIDEO
CHECK C684 ON V MODULE 22mfd BI-POLAR - USE 2 IN SERIES.
14-09-04
Panasonic
Alpha 2M TX21MD3
Dead, relay clicking for three or four minutes, then works o/k
C807 & C806 ( 100uF 50 volt ) in power supply primary
14-09-04
Panasonic
Alpha 2W
at switch on runs for 2 sec and goes dead
HT too high at 180V, OK if running on a dummy load- STR54041 is faulty.
14-09-04
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Last SM download : Kenwood Trio JR-500 user
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