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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: 28
Bush
147
3T
Dead - off with flash
BUZ77B chopper s/c; R805 330k hi res at 570k; R889 0R47 o/c & replaced TDA4605-2 & C831 1µ 50v as a precaution
14-09-04
Bush
147
3T
To enter serv mode on "11AK08" version (printed on front edge of chassis)
1 Press vol- on the keypad 2 Press 'prog' on the handset 3 Press '--' on the handset 4 Press TV on the handset (That's the one with the blank screen on it) Use prog + & - to select parameters and vol + & - to alter values. The red button stores and the exit with 'TV'
14-09-04
Bush
147
3T 11AK08
Line tearing
C818 (47MFD 160VW), +B line smoothing capacitor (high ESR).
14-09-04
Bush
147
3T 11AK08
Pic int smeary or dissappears
Dry joint PL901 earth wire on crt base panel
14-09-04
Bush
147
3T 11AK20
Field collapse
R709 sm 10k adjacent to FOP chip not properly soldered in
14-09-04
Bush
147
4T
Dead
Replace D811 in the secondary of the PSU. I used a BYV28/150 as a replacement
14-09-04
Bush
147
4T (AK20)
Dead
D811 in sec of psu - used BYV28/150
14-09-04
Dansai
CTV
147
7
Dead - faint whistling from PSU.
C617 small blue disc type.
14-09-04
Dansai
CTV
147
7
Dead apart from whistling from psu
C617 blue disc cap pinhole in it
14-09-04
Dansai
CTV
147
7
No Sound.
Speaker O/C.
14-09-04
Goodmans
147
Dead ZD402 s/c R425 o/c
Check C911 & C909 Beware orientation of C909 should be "-" plate to Q904
14-09-04
Goodmans
147
/149
Dead
SEE Bush 1400
14-09-04
Goodmans
147
5TS
Int blank raster - ok on scart
Vid proc I501 TDA8374A
14-09-04
Goodmans
147
TT
Dead
ZD402 12v, R425 5R6 3w caused by C911 47µ 50v (may be inserted wrong polarity - marking on some boards is wrong)
14-09-04
Goodmans
147
TT
DIST FIELD
R413 6k8 HIGH
14-09-04
Goodmans
147
TT
NO VIS , BLANK RASTER ( MAY RE-APPEAR WHEN A1 ADJ.
R430 180k
14-09-04
Hitachi
C
147
4R
Dead
ZD910 S.C. BZX79C2V7
14-09-04
Hitachi
C
147
4R
No sound
IC201 TDA4503 - pin 13 should be 3.2v but read 0v
14-09-04
Matsui
147
6
Dead
STR50103A s/c; R2M diode s/c; 5R6 5w o/c; LOPTx also faulty
14-09-04
Matsui
147
6
Dead - no HT from STR50103A
Q502 2SA952L b-e leaky - used BC327 in lieu
14-09-04
Matsui
147
6
dead & ticking
C412 470µ 16v, C414 100µ 35v leaky & LA7837 FOP chip
14-09-04
Matsui
147
6
Field collapse
D407 s/c; R437 2R7 o/c
14-09-04
Matsui
147
6
Slow start up then blank or partially blank
R411 4k7 hi res
14-09-04
Matsui
147
6
The picture took a very long time to appear and wo
The cause of the trouble was R411 ( 4.7k ) which had risen slightly in value.
14-09-04
Matsui
147
6 , 1492 , 2076
REMOTES NO FUNCTIONS
CHECK IC TYPE IN TELE MAG APRIL 95 PAGE 408
14-09-04
Osume
CTV
147
4
Line foldover - affected by brill/contrast
Remove ferite bead stuck in glue by lop tr coll & replace lop tr
14-09-04
Saisho
CT
147
R
Chan stores on all chans together
32v tuning supply high at 38v, IC102 µPC574J faulty
14-09-04
Sanyo
CBP2
147
St/by only
Fault in st/by cct - linked st/by conn on mains sw to chassis but no st/by facility now available
14-09-04
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