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Le Hua " riverside of SamSung flying benefit " color television circuit is impro
From;    Author:Stand originally

The color television that uses this movement has RD21S, RK21B, R2169S, R2171S to wait, CPU uses KS88P324N, advocate board core circuit uses sheet piece collect is agglomerate 0M8838PS.
1. Of field output circuit make following improvement, can avoid a law of output piece random effectively burned-out phenomenon.
1) come in TDA8356 ⑥ foot the paralell connection between ③ foot an O. The ceramics capacitance of 50V of / of 1 μ F.
2) oxidize R457 of resistor of current limliting of 45V power source by metal of 100 Ω of original 33 Ω , instead of 1 / 2W, 1W velar resistor.
3) capacitance C456 by so 63V of / of F of μ of 1O of instead of 63V of / of 47 μ F, close outfit comes at TDA8356 ⑥ ③ foot.
4) reachs the ground in TDA8356 ⑥ foot and diode of stabilized voltage of 2W of a 45V, 1 / .
5) the ground reachs in TDA8356 ⑦ foot and the diode of fast stabilized voltage of 2W of a 56V, 1 / (B2T03, C56) .
2, remote control circuit makes following improvement, can avoid effectively " random in be watched normally law appears automatic revolving stage " , " the float after changing a table is errant " , " the function is disorder " reach " random law dead machine " wait for breakdown phenomenon.
1) controls key board on R005 by 16W of 30k of instead of 16W of original 27k, 1 / , 1 / ;
2) controls a foot in CPU key namely ⑨ is opposite each with 10 feet the ground is shunt-wound 0. Capacitance of high frequency ceramics of 0l μ F.
3) 0-30V harmonious voltage forms the R101 in circuit (12k) with R103 (1Ok) by metal of original instead of carbolic film resistor velar resistor, c114 (0. 22 μ F) O of filmy capacitance instead. Capacitance of Tantalum of 22 μ F/45V; Demolish capacitance of C603, C625.
4) general memory (24C08) by product of company of ST of ATMEL product instead;
5) short circuit CPU arrives between memory R602 of bus line resistor, R603; Demolish C332, C333; 3.3K of instead of resistor of R630, R631, 1/16W.
6) in foot of memory power supply (⑧ foot) be carried with ground connection and receive 16V of / of F of a 10 μ to electroanalysis capacitance;



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