Schematics 4 Free
Service manuals, schematics, documentation, programs, electronics, hobby ....
◦
register
◦
send pass
S
earch
B
rowse
U
pload
W
anted
D
atasheets
C
hassis2model
R
epair tips
F
ulltext search
C
ables & Connectors
R
epair tips
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
Dead no output from PSU
Suspect IC801 STR51424M
14-09-04
Panasonic
Alpha 2
DEAD NO POWER SUPPLY OPERATION
D851 SC
14-09-04
Panasonic
Alpha 2
DEAD SET SQUEALS
LINE OP TRANSISTOR SC FEED RESISTOR OC CAUSED BY DRY JOINTS ON LINE DRIVER TX
14-09-04
Panasonic
Alpha 2
DEAD STBY LED FLICKERS AT SWITCH ON NO CHOPPER
C882 0.01uF CERAMIC
14-09-04
Panasonic
Alpha 2
Dead with whine - chan no. showing
LOPTr 2SD1439 leaky - used BU508D - resold Line dr tfmr
14-09-04
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
14-09-04
Panasonic
Alpha 2
Dead.
D851 ( C2408M ) s/c or leaky.
14-09-04
Panasonic
Alpha 2
E-W dist
C754 180pF in EW parabola cct
14-09-04
Panasonic
Alpha 2
EW FAULT SOME TIMES INT
C754 180pF
14-09-04
Panasonic
Alpha 2
Field - hor lines/pairing
R469 470R hi res
14-09-04
Panasonic
Alpha 2
Field - top foldover
AN5521 FOP chip
14-09-04
Panasonic
Alpha 2
FIELD COLLAPSE
CHECK TDA2579A AND C403 ( 0.01mfd ) PIN 2
14-09-04
Panasonic
Alpha 2
FIELD COLLAPSE
C403 0.01mfd
14-09-04
Panasonic
Alpha 2
FIELD COLLAPSE
C400
14-09-04
Panasonic
Alpha 2
Field collapse
R484 o/c replace with CP N25
14-09-04
Panasonic
Alpha 2
Field Collapse
R484 fusible o/c - used 1R5 1/8w
14-09-04
Panasonic
Alpha 2
Field collapse
C403 10nF connected to pin 2 TDA2579 timebase chip leaky
14-09-04
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
14-09-04
Panasonic
Alpha 2
Field collapse , no 25v on pin 3 AN5521
R848 800mA fuse oc ( behind field op ic )
14-09-04
Panasonic
Alpha 2
FIELD COLLAPSE WITH BLANKED OUT PIC
C403 10nf PIN 2 TDA2579
14-09-04
Panasonic
Alpha 2
Frame collapse.
C403 ( 10nf ) pin 2 of TDA2579.
14-09-04
Panasonic
Alpha 2
Goes to st/by 1 sec after sw on
No 12v as L303 10µH in 12v feed o/c
14-09-04
Panasonic
Alpha 2
High pitched whistle - picture Ok.
Drys on LOPTX overwinding.
14-09-04
Panasonic
Alpha 2
INT COLOUR + POOR COLOUR AT MAX SETTING OF COL. CO
DL601 DELAY LINE
14-09-04
Panasonic
Alpha 2
INT FLASHING AND GOING OFF
CHECK DAG EARTHING AND FIXING BOLTS ( REMOVE Q802 TO PREVENT SET SWITCHING OFF )
14-09-04
Panasonic
Alpha 2
Int flashing with speckles & going off
Check crt fixing bolts to aquadag
14-09-04
Panasonic
Alpha 2
INT LOSS LINE HOLD
LOPT DRY JOINTED
14-09-04
Panasonic
Alpha 2
Int mains fuse F801 blowing
Mains smoother cap C807 100µ 400v
14-09-04
Panasonic
Alpha 2
INT NON START
R854 ( 0.47 ) CHANGE TO 0.33 PT. NO. ERQ1CKTR33S
14-09-04
Panasonic
Alpha 2
Int or weak colour
DL601 Chroma Delay line
14-09-04
page:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
FB
-
Links
-
Info / Contacts
-
Forum
-
Last SM download : Rohde & Schwarz R&S FSA Operation
script execution: 0.01 s