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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: 10
Crown
CRP21
Child lock removal
s/c pins 4 & 17 of R/C. Press 'clear' then 'pass'. S/C pins again twice. To clear press 'clear'.
14-09-04
Crown
CRP21
T
dead
R599 2k 5w - replace Q579 too
14-09-04
Crown
CRP21
T
dead
Q101 BUZ77 FET chopper s/c, R101 5R6 5w o/c, R108 220k, R109 330k hi res. Also check chopper tfmr for leaky feedback windings + TDA4605
14-09-04
Crown
CRP21
T
Dead Q101 PSU Chopper s/c
R108 220k & R109 330k hi res
14-09-04
Crown
CRP21
T
int dead
2SC1573A line driver Q579 (may check ok)
14-09-04
Crown
CRP21
T
Int symbols showing when Micro & Xtal fitted with blank raster
Fit D483 in its posn between micro & tuner/IF (No diode previously fitted)
14-09-04
Crown
CRP21
T
No signals
R127 12k o/c
14-09-04
Crown
CRP21
T
Pass Code - resetting
open hset if SAA3004P s/c pins 2+18; if KS51900-43 or OHS2015DN s/c pins 18 + D6; if GMS30150 9514 s/c pins 4&17. Sw on tv, press chan button so PASS displayed, insert R/C batts & point at tv. PASS CLEAR appears on tv. Remove R/C s/c to end set up.
14-09-04
Crown
CRP21
T SM1 Mono
Stuck in standby.
R599 2k 5watt in PSU o/c , check Q579.
14-09-04
Crown
CRP21
T(S)
Dead - internal fuse intact (due to power surge)
Q101 BUZ90F, IC104 TDA4605 & R101 5R6 5w
14-09-04
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