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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: 14
Toshiba
285T8B
Dead - 140v HT low due to 18R s/c in LOP stage
C464 680pf 2Kv across LOP transitor
14-09-04
Toshiba
285T8B
FRAME COLLAPSE
REPLACE C313, IC303, R327 AND D305
14-09-04
Toshiba
285T8B
frame collapse
IC303 TDA8170, C313 220uF 35V, R327 2R7 1W (24557279), also check D305 BYD33J
14-09-04
Toshiba
285T8B
LOUD WHINE IN NICAM-FM OK
Q604 ( TD6710AN ) DAC IC
14-09-04
Toshiba
285T8B
No sound/pic - blank raster when A1s advanced
No 5v to micro from 2nd chopper cct - C832 330pf 2kv in snubber burnt
14-09-04
Toshiba
285T8B
No sound/vis or osd
HT ok but 5/12v audio supplies low - C832 leaky in mains pri cct
14-09-04
Toshiba
285T8B
No start up
C842 330µ 25v in secondary psu low (provides 5v for micro)
14-09-04
Toshiba
285T8B
St/by only
TDA4601 Siemans
14-09-04
Toshiba
285T8B
TUNING DRIFTING
CA30/31/35 DISC CERAMICS BY MICRO.
14-09-04
Toshiba
285T8B
Very int Stuck in StBy Nicam LED glow
PSU in over current mode with H.T. less than 20V Change C845 from ( 22uF ) to ( 100uF ) 50V
14-09-04
Toshiba
285T8B
Weak contrast
Check connections to CRT heaters
14-09-04
Toshiba
285T8B
WILL NOT START IF R818 20k IS REPLACED WITH 15k SE
FIT MOD KIT Pt No 23305114
14-09-04
Toshiba
285T8B
U
Tripping with popping noise from spkrs
C842 330u 25v & 22u 25v cap across DF80 on print side
14-09-04
Toshiba
285T8B
Z
LOUD SCREECH FROM SPEAKERS FOR 1 SEC THEN NOTHING
C638 1000mfd 25v NEAR AUDIO OP. CHIP.
14-09-04
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