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: 39
GEC
NP84
Mk2
Int no colour.
C527.
14-09-04
Hitachi
NP84
Stuck in standby.
DRYS ON CHOPPER TX
14-09-04
Hitachi
NP84
CQ
Bright vertical line.
Zener ZD702 ( 10v , 500mW ) leaky.
14-09-04
Hitachi
NP84
CQ
Channels - screen flashes red , green or blue.
IC501 ( TDA3562A ) reduce R726 to 560R R610 to 8.2k.
14-09-04
Hitachi
NP84
CQ
Dead
R710 OR R713 OC IN LINE DRIVER STAGE
14-09-04
Hitachi
NP84
CQ
Dead
CHECK Q703 , Q702 , Q903 & LOPTY
14-09-04
Hitachi
NP84
CQ
dead
F901 1.6A fuse o/c - no other ff
14-09-04
Hitachi
NP84
CQ
Dead - blown.
Uprate fuse from 1.25a to 1.6amp.
14-09-04
Hitachi
NP84
CQ
dead - ht fuse o/c
when replaced squeals if sw held in - whisker of wire on lopt pin s/c supply
14-09-04
Hitachi
NP84
CQ
Dead - shows "1" in display
Q902 BU806; ZD901BZW03C36; Q1455 BC548B
14-09-04
Hitachi
NP84
CQ
dead - trips once at sw on
HT high at 150v (100v); Q902 BU806 leaky; ZD901 BZW03C36 s/c
14-09-04
Hitachi
NP84
CQ
dead - whines only
ok on dummy load - Loptx Pt no 2434141
14-09-04
Hitachi
NP84
CQ
Dead StBy LED & channel indicators ok
Check Q1455 ( BC548 )
14-09-04
Hitachi
NP84
CQ
Dead.
R710 ( 2.7k ) , R713 ( 2.2k ) ,
14-09-04
Hitachi
NP84
CQ
excess ht & rolling
R908 22k in error sensing network hi res
14-09-04
Hitachi
NP84
CQ
Field bounce/roll
C603 47µ 160v u/s
14-09-04
Hitachi
NP84
CQ
field collapse
C603 47µ 160v scan coupling cap
14-09-04
Hitachi
NP84
CQ
Frame - memory not storing.
IC201 ( ZTK33B )
14-09-04
Hitachi
NP84
CQ
Int col
TDA3565 dry joints
14-09-04
Hitachi
NP84
CQ
Int goes into st/by & Ch+/Ch- buttons on tv won't operate correctly
Reprog micro as per instructions
14-09-04
Hitachi
NP84
CQ
Int st/by & chan change no's
No 12v to remote pcb etc. R714 1R fusible in series with pin 2 loptx
14-09-04
Hitachi
NP84
CQ
No col
Replace TDA3565 & adj ref osc
14-09-04
Hitachi
NP84
CQ
No col
Pin 11 IC501 low - C511 2µ2 50v brightness pot decoupler
14-09-04
Hitachi
NP84
CQ
No colour - int.
C507 ( 2.2u f ) , IC TDA3562A.
14-09-04
Hitachi
NP84
CQ
No frame or sound.
R714 ( 1R ) o/c.
14-09-04
Hitachi
NP84
CQ
No sigs - just snow
No 12v to tuner - crack in print by R222 AGC control
14-09-04
Hitachi
NP84
CQ
NO SOUND
TDA4503
14-09-04
Hitachi
NP84
CQ
Partial field collapse
C603 47µ 150v in field o/p cct
14-09-04
Hitachi
NP84
CQ
Stuck in standby.
R908 22k HIGH
14-09-04
Hitachi
NP84
CQ
Stuck in standby.
1.6a fuse on L/H side main PCB.
14-09-04
page:
1
2
FB
-
Links
-
Info / Contacts
-
Forum
-
Last SM download : LG mfl41037108 37lg3000 za 110
script execution: 0.06 s