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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: 18
Bush
1402
Int shuts down
All volts present, no line drive - 500hz resonator pin 19 IC301dry joint
14-09-04
GEC
1402
No sound at switch on / dist sound
C228 leaky.
14-09-04
GEC
1402
Whistle - low frequency.
Lin coil L505.
14-09-04
GEC
C
1402
H CVC801
Startup - dead.
IC700 ( 7812 ) 12v reg , T873 , IC870 ( TDA2140 ) check by change
14-09-04
Goodmans
C
1402
Dead
D611-614 mains rects replaced - BY133 does
14-09-04
Goodmans
C
1402
St/by only after s/c mains diode replaced
IC612 opto isolator - type unmarked - most 4 legged devices should work
14-09-04
Matsui
1402
field trying to collapse with flicker
field preset int
14-09-04
Matsui
1402
line lock int
C484 2µ2 tant
14-09-04
Matsui
1402
No tuning
No AGC volts at tuner - R261 47k o/c
14-09-04
Matsui
1402
NOT TUNING
CHECK IF AGC VOLTAGE PRESENT IF NOT R261 ( 47K ) OPEN
14-09-04
NEI
NWC
1402
R
No green.
Q507 on CRT base o/c.
14-09-04
NEI
NWC
1402
R
Whistle - high pitched.
T431 glue windings.
14-09-04
Onwa
1402
Snow only - tuning but no store
The -30v supply to IC601 pin 9 low. ZD601 30v zener leaky
14-09-04
Realistic
1402
160
Tripping - Rapid.
12k R507 & R508 resistors feeding 12v stab o/c.
14-09-04
Toshiba
VTV
1402
Dead
LOPTr insul breaking down (read ok) & C438 & C417 1000pF 500v
14-09-04
Toshiba
VTV
1402
5B
LOPTr keeps failing (Q406 2SD2627LS)
Replacement comes with a kit (pt no BZ510036) - consists of C417 & C438 1000pF 500v replacements
14-09-04
Toshiba
VTV
1402
B
Dead
R504 270k o/c
14-09-04
Toshiba
VTV
1402
B & S
Dead
Q406 2SD2627LS LOPTr pt no BZ10036 s/c - also replace C417 & C438 1000pF 500v
14-09-04
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