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SX-1050 Full Rebuild Parts List - Completed Project

Wyatt Weeks

Wyatt Weeks

Member
(EDIT: 9/12/2020 - Rebuild completed successfully and the following list has been updated to reflect all components replaced, and mouser replacement parts i used).

I just acquired a mint SX-1050 from the original owner at a great price - the kind of deal on local CL that rarely ever happens anymore. After a DeOxit/FaderLube treatment and bias/idle adjustment, the unit functions perfectly. But having rebuilt a few pioneer receivers, I know how much better they can sound after a re-cap/re-transistor treatment, and so am going to refurbish this one. I'd like to verify the main list and a few other things.

This list originated from MTF's 2/15/2019 guidance in post #3, in this 2019 thread, plus additional recommendations from the same thread. In addition to this main list, and after having reconciled it with the service manual, I have a few questions on other caps/transistors/diodes. You'll see those specific questions after the main list below. Thanks for the help!
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EDIT 9/8/2020: Rebuild completed with excellent results - list updated. This list contains all parts i replaced in my SX-1050 rebuild.

EDIT 8/15: Power-Supply-B AWR-104 parts added

EDIT 8/14: Power Amp, Protection, PowerSupply, and Surge Suppressor board components finalized and updated below. also changed filter caps to 33k/80v. working on the remaining.

EDIT 8/13: changed transistor to: Protection awm-090 q6 2sc945 0 0 0 0 0 512-KSC2383YTA

EDIT 8/12: For clarity, I have removed all previously posted (by me) lists from this thread, and am updating with my final list for vetting. This one is comprehensive. All items in-stock at mouser, as of today. Thanks in advance for the input.
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COMPREHENSIVE LIST
# component board loc OEMpart(uF) OEM(V) type Newpart(uF) NewPart(V) MouserPartNum
1 Tuner awe-067 c35 100 16 cea 100 35 647-UPW1V101MPD
2 Tuner awe-067 c36 1 50 cea 1 63 505-MKS21.0/63/5
3 Tuner awe-067 c38 10 16 ceanl 10 50 647-UKL1H100KDDANA
4 Tuner awe-067 c39 47 16 ceanl 47 25 647-UKL1E470KEDANATD
5 Tuner awe-067 c40 100 16 cea 100 35 647-UPW1V101MPD
6 Tuner awe-067 c41 0.047 50 cqma 0.047 50 80-MMK5473J50J01TR18
7 Tuner awe-067 c42 4.7 25 ceanl 4.7 25 647-UKL1E4R7KDDANA
8 Tuner awe-067 c43 10 16 ceanl 10 50 647-UKL1H100KDDANA
9 Tuner awe-067 c44 10 16 ceanl 10 50 647-UKL1H100KDDANA
10 Tuner awe-067 c47 1 25 ceanl 1 50 505-MKS2B041001C00JO
11 Tuner awe-067 c48 0.0033 50 cqma 0.0033 50 80-MMK5332K63J01TR18
12 Tuner awe-067 c49 0.0033 50 cqma 0.0033 50 80-MMK5332K63J01TR18
13 Tuner awe-067 c50 0.22 25 cssa 0.22 50 80-MMK5224J50J01TA18
14 Tuner awe-067 c51 1 10 cssa 1 50 505-MKS2B041001C00JO
15 Tuner awe-067 c52 3.3 10 cssa 3.3 50 647-UKL1H3R3KDDANA
16 Tuner awe-067 c54 220 16 cea 220 25 647-UPW1E221MPD
17 Tuner awe-067 c59 47 16 cea 47 35 647-UPW1V470MED1TD
18 Tuner awe-067 c60 4.7 25 cea 4.7 50 647-UPW1H4R7MDD1TD
19 Tuner awe-067 c64 10 16 cea 10 50 647-UPW1H100MDD6
20 Tuner awe-067 c67 0.1 25 cssa 0.1 63 505-MKS2.1/63/5T
21 Tuner awe-067 c70 1 25 ceanl 1 50 505-MKS2B041001C00JO
22 Tuner awe-067 c71 0.1 25 cssa 0.1 63 505-MKS2.1/63/5T
23 Tuner awe-067 c72 0.47 50 cea 0.47 50 505-MKS2B034701B00KO
24 Tuner awe-067 d1 1S2076 512-1n4148
25 Tuner awe-067 d2 1S2076 512-1n4148
26 Tuner awe-067 d3 1S2473 512-1n4148
27 Tuner awe-067 d4 1S2076 512-1n4148
28 Tuner awe-067 d5 1S2076 512-1n4148
29 Tuner awe-067 q5 2sc1312 0 0 0 0 512-KSC1845FTA
30 Equalizer Amp awf-020 c1 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
31 Equalizer Amp awf-020 c10 220 10 cea 220 25 647-UPW1E221MPD
32 Equalizer Amp awf-020 c17 33 35 cea 33 35 647-UPW1V330MDD
33 Equalizer Amp awf-020 c18 33 35 cea 33 35 647-UPW1V330MDD
34 Equalizer Amp awf-020 c2 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
35 Equalizer Amp awf-020 c21 10 35 ceanl 10 50 647-UKL1H100KDDANA
36 Equalizer Amp awf-020 c22 10 35 ceanl 10 50 647-UKL1H100KDDANA
37 Equalizer Amp awf-020 c5 220 35 cea 220 35 647-UPW1V221MPD
38 Equalizer Amp awf-020 c6 220 35 cea 220 35 647-UPW1V221MPD
39 Equalizer Amp awf-020 c9 220 10 cea 220 25 647-UPW1E221MPD
40 Equalizer Amp awf-020 q1 2sa841s 0 0 0 0 512-KSA992FBU
41 Equalizer Amp awf-020 q10 2sc872a 0 0 0 0 512-KSA992FBU
42 Equalizer Amp awf-020 q2 2sa841s 0 0 0 0 512-KSA992FBU
43 Equalizer Amp awf-020 q3 2sa841s 0 0 0 0 512-KSA992FBU
44 Equalizer Amp awf-020 q4 2sa841s 0 0 0 0 512-KSA992FBU
45 Equalizer Amp awf-020 q5 2sc1775a 0 0 0 0 512-KSC1845FTA
46 Equalizer Amp awf-020 q6 2sc1775a 0 0 0 0 512-KSC1845FTA
47 Equalizer Amp awf-020 q7 2sc1775a 0 0 0 0 512-KSC1845FTA
48 Equalizer Amp awf-020 q8 2sc1775a 0 0 0 0 512-KSC1845FTA
49 Equalizer Amp awf-020 q9 2sc872a 0 0 0 0 512-KSA992FBU
50 FlatAmp awg-040 c1 1 25 csza 1 50 505-MKS2B041001C00JO
51 FlatAmp awg-040 c10 0.24 50 cqma 0.22 63 505-MKS2C032201BKI00
52 FlatAmp awg-040 c13 2.2 25 csza 2.2 50 647-UKL1H2R2KDDANATD
53 FlatAmp awg-040 c14 2.2 25 csza 2.2 50 647-UKL1H2R2KDDANATD
54 FlatAmp awg-040 c15 100 10 ceanl 100 10 647-UKL1A101KEDANA
55 FlatAmp awg-040 c16 100 10 ceanl 100 10 647-UKL1A101KEDANA
56 FlatAmp awg-040 c2 1 25 csza 1 50 505-MKS2B041001C00JO
57 FlatAmp awg-040 c23 100 10 ceanl 100 10 647-UKL1A101KEDANA
58 FlatAmp awg-040 c24 100 10 ceanl 100 10 647-UKL1A101KEDANA
59 FlatAmp awg-040 c25 220 35 cea 220 35 647-UPW1V221MPD
60 FlatAmp awg-040 c26 220 35 cea 220 35 647-UPW1V221MPD
61 FlatAmp awg-040 c3 1 25 csza 1 50 505-MKS2B041001C00JO
62 FlatAmp awg-040 c4 1 25 csza 1 50 505-MKS2B041001C00JO
63 FlatAmp awg-040 c5 4.7 25 ceanl 4.7 25 647-UKL1E4R7KDDANA
64 FlatAmp awg-040 c6 4.7 25 ceanl 4.7 25 647-UKL1E4R7KDDANA
65 FlatAmp awg-040 c7 220 35 cea 220 35 647-UPW1V221MPD
66 FlatAmp awg-040 c8 220 35 cea 220 35 647-UPW1V221MPD
67 FlatAmp awg-040 c9 0.24 50 cqma 0.22 63 505-MKS2C032201BKI00
68 FlatAmp awg-040 d1 1S2473 512-1n4148
69 FlatAmp awg-040 d2 1S2473 512-1n4148
70 FlatAmp awg-040 d3 1S2473 512-1n4148
71 FlatAmp awg-040 d4 1S2473 512-1n4148
72 FlatAmp awg-040 q1 2sc1775a 0 0 0 0 512-KSC1845FTA
73 FlatAmp awg-040 q2 2sc1775a 0 0 0 0 512-KSC1845FTA
74 FlatAmp awg-040 q3 2sa872a 0 0 0 0 512-KSA992FBU
75 FlatAmp awg-040 q4 2sa872a 0 0 0 0 512-KSA992FBU
76 FlatAmp awg-040 q7 2sa725 0 0 0 0 512-KSA992FBU
77 FlatAmp awg-040 q8 2sa725 0 0 0 0 512-KSA992FBU
78 ControlAmp awg-041 c1 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
79 ControlAmp awg-041 c11 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
80 ControlAmp awg-041 c12 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
81 ControlAmp awg-041 c13 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
82 ControlAmp awg-041 c14 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
83 ControlAmp awg-041 c17 100 16 ach-312 100 35 647-UPW1V101MPD
84 ControlAmp awg-041 c18 100 16 ach-312 100 35 647-UPW1V101MPD
85 ControlAmp awg-041 c19 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
86 ControlAmp awg-041 c2 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
87 ControlAmp awg-041 c20 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
88 ControlAmp awg-041 c21 0.018 50 cqma 0.018 50 80-MMK5183J50J01L4
89 ControlAmp awg-041 c22 0.018 50 cqma 0.018 50 80-MMK5183J50J01L4
90 ControlAmp awg-041 c23 0.018 50 cqma 0.018 50 80-MMK5183J50J01L4
91 ControlAmp awg-041 c24 0.018 50 cqma 0.018 50 80-MMK5183J50J01L4
92 ControlAmp awg-041 c27 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
93 ControlAmp awg-041 c28 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
94 ControlAmp awg-041 c29 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
95 ControlAmp awg-041 c3 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
96 ControlAmp awg-041 c30 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
97 ControlAmp awg-041 c33 100 10 ach-312 100 35 647-UPW1V101MPD
98 ControlAmp awg-041 c34 100 10 ach-312 100 35 647-UPW1V101MPD
99 ControlAmp awg-041 c35 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
100 ControlAmp awg-041 c36 2.2 25 ceanl 2.2 50 647-UKL1H2R2KDDANATD
101 ControlAmp awg-041 c37 100 16 ach-311 100 35 647-UPW1V101MPD
102 ControlAmp awg-041 c38 100 16 ach-311 100 35 647-UPW1V101MPD
103 ControlAmp awg-041 c39 100 16 ach-311 100 35 647-UPW1V101MPD
104 ControlAmp awg-041 c4 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
105 ControlAmp awg-041 c40 100 16 ach-311 100 35 647-UPW1V101MPD
106 ControlAmp awg-041 c43 10 25 csza 10 50 647-UKL1H100KDDANA
107 ControlAmp awg-041 c44 10 25 csza 10 50 647-UKL1H100KDDANA
108 ControlAmp awg-041 c45 0.063 50 cqma 0.068 63 505-MKS2C026801A00JI
109 ControlAmp awg-041 c46 0.063 50 cqma 0.068 63 505-MKS2C026801A00JI
110 ControlAmp awg-041 c5 0.056 50 cqma 0.056 50 80-MMK5563K50J01L4
111 ControlAmp awg-041 c6 0.056 50 cqma 0.056 50 80-MMK5563K50J01L4
112 ControlAmp awg-041 c7 0.056 50 cqma 0.056 50 80-MMK5563K50J01L4
113 ControlAmp awg-041 c8 0.056 50 cqma 0.056 50 80-MMK5563K50J01L4
114 ControlAmp awg-041 q1 2sc1312 0 0 0 0 512-KSC1845FTA
115 ControlAmp awg-041 q2 2sc1312 0 0 0 0 512-KSC1845FTA
116 ControlAmp awg-041 q3 2sc1312 0 0 0 0 512-KSC1845FTA
117 ControlAmp awg-041 q4 2sc1312 0 0 0 0 512-KSC1845FTA
 
Last edited:
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continued (2 of 2):

118 PowerAmp awh-047 c1 0.68 25 csza 0.68 50 505-MKS2.68/50/10
119 PowerAmp awh-047 c13 0.039 50 cqma 0.039 50 80-MMK5393K50J01L4
120 PowerAmp awh-047 c14 0.039 50 cqma 0.039 50 80-MMK5393K50J01L4
121 PowerAmp awh-047 c2 0.68 25 csza 0.68 50 505-MKS2.68/50/10
122 PowerAmp awh-047 c23 0.039 50 cqma 0.039 50 80-MMK5393K50J01L4
123 PowerAmp awh-047 c24 0.039 50 cqma 0.039 50 80-MMK5393K50J01L4
124 PowerAmp awh-047 c25 470 6 cea 470 10 647-UPW1A471MPD
125 PowerAmp awh-047 c26 470 6 cea 470 10 647-UPW1A471MPD
126 PowerAmp awh-047 c27 470 6 cea 470 10 647-UPW1A471MPD
127 PowerAmp awh-047 c28 470 6 cea 470 10 647-UPW1A471MPD
128 PowerAmp awh-047 c5 10 16 cea 10 50 647-UPW1H100MDD1TA
129 PowerAmp awh-047 c6 10 16 cea 10 50 647-UPW1H100MDD1TA
130 PowerAmp awh-047 d10 sib01-02 863-1N4004RLG
131 PowerAmp awh-047 d11 sib01-02 863-1N4004RLG
132 PowerAmp awh-047 d12 sib01-02 863-1N4004RLG
133 PowerAmp awh-047 d13 sib01-02 863-1N4004RLG
134 PowerAmp awh-047 d14 sib01-02 863-1N4004RLG
135 PowerAmp awh-047 d15 sib01-02 863-1N4004RLG
136 PowerAmp awh-047 d16 sib01-02 863-1N4004RLG
137 PowerAmp awh-047 d17 sib01-02 863-1N4004RLG
138 PowerAmp awh-047 d18 sib01-02 863-1N4004RLG
139 PowerAmp awh-047 d19 sib01-02 863-1N4004RLG
140 PowerAmp awh-047 d20 sib01-02 863-1N4004RLG
141 PowerAmp awh-047 d3 1s2473 512-1n4148
142 PowerAmp awh-047 d4 1s2473 512-1n4148
143 PowerAmp awh-047 d9 sib01-02 863-1N4004RLG
144 PowerAmp awh-047 q1 2sa750 0 0 0 0 512-KSA992FBU
145 PowerAmp awh-047 q10 2sc1439 0 0 0 0 512-KSC3503dstu
146 PowerAmp awh-047 q11 2sa858 0 0 0 0 512-KSA1381ESTU
147 PowerAmp awh-047 q12 2sa858 0 0 0 0 512-KSA1381ESTU
148 PowerAmp awh-047 q13 2sa858 0 0 0 0 512-KSA1381ESTU
149 PowerAmp awh-047 q14 2sa858 0 0 0 0 512-KSA1381ESTU
150 PowerAmp awh-047 q15 2sc1439 0 0 0 0 512-KSC3503dstu
151 PowerAmp awh-047 q16 2sc1439 0 0 0 0 512-KSC3503dstu
152 PowerAmp awh-047 q17 2sb536a 0 0 0 0 512-KSA940TU
153 PowerAmp awh-047 q18 2sb536a 0 0 0 0 512-KSA940TU
154 PowerAmp awh-047 q19 2sd381a 0 0 0 0 512-KSC2073TU
155 PowerAmp awh-047 q2 2sa750 0 0 0 0 512-KSA992FBU
156 PowerAmp awh-047 q20 2sd381a 0 0 0 0 512-KSC2073TU
157 PowerAmp awh-047 q21 2sa858 0 0 0 0 512-KSA1381ESTU
158 PowerAmp awh-047 q22 2sa858 0 0 0 0 512-KSA1381ESTU
159 PowerAmp awh-047 q23 2sb539c 0 0 0 0 863-MJ21193G
160 PowerAmp awh-047 q24 2sb539c 0 0 0 0 863-MJ21193G
161 PowerAmp awh-047 q25 2sd287c 0 0 0 0 863-MJ21194G
162 PowerAmp awh-047 q26 2sd287c 0 0 0 0 863-MJ21194G
163 PowerAmp awh-047 q27 2sb539c 0 0 0 0 863-MJ21193G
164 PowerAmp awh-047 q28 2sb539c 0 0 0 0 863-MJ21193G
165 PowerAmp awh-047 q29 2sd287c 0 0 0 0 863-MJ21194G
166 PowerAmp awh-047 q3 2sa750 0 0 0 0 512-KSA992FBU
167 PowerAmp awh-047 q30 2sd287c 0 0 0 0 863-MJ21194G
168 PowerAmp awh-047 q4 2sa750 0 0 0 0 512-KSA992FBU
169 PowerAmp awh-047 q5 2sa750 0 0 0 0 512-KSA992FBU
170 PowerAmp awh-047 q6 2sa750 0 0 0 0 512-KSA992FBU
171 PowerAmp awh-047 q7 2sc1439 0 0 0 0 512-KSC3503dstu
172 PowerAmp awh-047 q8 2sc1439 0 0 0 0 512-KSC3503dstu
173 PowerAmp awh-047 q9 2sc1439 0 0 0 0 512-KSC3503dstu
174 PowerAmp awh-047 vr1 2.2k 0 0 0 2K, 25 turn 652-3296P-1-202LF
175 PowerAmp awh-047 vr2 2.2k 0 0 0 2K, 25 turn 652-3296P-1-202LF
176 PowerAmp awh-047 vr3 470 0 0 0 500, 1 turn 652-3386H-1-501LF
177 PowerAmp awh-047 vr4 470 0 0 0 500, 1 turn 652-3386H-1-501LF
178 FilterAmp awm-089 c1 0.1 50 cqma 0.1 63 505-MKS2.1/63/5T
179 FilterAmp awm-089 c12 10 25 csza 10 50 647-UKL1H100KDDANA
180 FilterAmp awm-089 c2 0.1 50 cqma 0.1 63 505-MKS2.1/63/5T
181 FilterAmp awm-089 c3 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
182 FilterAmp awm-089 c6 10 25 csza 10 50 647-UKL1H100KDDANA
183 FilterAmp awm-089 c7 0.1 50 cqma 0.1 63 505-MKS2.1/63/5T
184 FilterAmp awm-089 c8 0.1 50 cqma 0.1 63 505-MKS2.1/63/5T
185 FilterAmp awm-089 c9 4.7 25 csza 4.7 25 647-UKL1E4R7KDDANA
186 FilterAmp awm-089 q1 2sc1313 0 0 0 0 512-KSC1845FTA
187 FilterAmp awm-089 q2 2sc1313 0 0 0 0 512-KSC1845FTA
188 Protection awm-090 c1 0.22 25 cssa 0.22 50 505-MKS2C032201BKI00
189 Protection awm-090 c2 0.22 25 cssa 0.22 50 505-MKS2C032201BKI00
190 Protection awm-090 c3 470 6 cea 470 10 647-UPW1A471MPD
191 Protection awm-090 c4 470 6 cea 470 10 647-UPW1A471MPD
192 Protection awm-090 c5 2.2 50 cea 2.2 50 647-UKL1H2R2KDDANATD
193 Protection awm-090 c6 47 50 cea 47 50 647-UPW1H470MED1TA
194 Protection awm-090 d1 1s2472 512-1n4148
195 Protection awm-090 d10 1s2473 512-1n4148
196 Protection awm-090 d2 1s2472 512-1n4148
197 Protection awm-090 d3 1s2472 512-1n4148
198 Protection awm-090 d4 1s2472 512-1n4148
199 Protection awm-090 d5 eqa01-33r 0 0 0 0 512-1N5257B
200 Protection awm-090 d6 1s2473 512-1n4148
201 Protection awm-090 d7 1s2473 512-1n4148
202 Protection awm-090 d8 1s2472 512-1n4148
203 Protection awm-090 d9 1s2471 512-1n4148
204 Protection awm-090 q1 2sc869 0 0 0 0 512-KSC1845FTA
205 Protection awm-090 q2 2sc869 0 0 0 0 512-KSC1845FTA
206 Protection awm-090 q3 2sc945a-q 0 0 0 0 512-KSC1845FTA
207 Protection awm-090 q4 2sc945a-q 0 0 0 0 512-KSC1845FTA
208 Protection awm-090 q5 2sa733-q 0 0 0 0 512-KSA992FBU
209 Protection awm-090 q6 2sc945 0 0 0 0 512-KSC2383YTA
210 Protection awm-090 q7 2sc1384 0 0 0 0 512-KSC2690AYS
211 Protection amm-090 s1 ASR-020 0 0 0 0 653-MY4-02-DC48
212 Protection chassis S2 ASR-015 0 0 0 0 653-LY1F-DC48
213 PowerSupply awr-103 c1 220 80 cea 220 100 647-UPW2A221MHD
214 PowerSupply awr-103 c12 47 16 cea 47 35 647-UPW1V470MED1TD
215 PowerSupply awr-103 c14 47 35 cea 47 35 647-UPW1V470MED1TD
216 PowerSupply awr-103 c15 100 35 cea 100 35 647-UPW1V101MPD
217 PowerSupply awr-103 c16 220 25 cea 220 25 647-UPW1E221MPD
218 PowerSupply awr-103 c17 47 10 cea 47 35 647-UPW1V470MED1TD
219 PowerSupply awr-103 c20 100 25 cea 100 35 647-UPW1V101MPD
220 PowerSupply awr-103 c22 47 10 cea 47 35 647-UPW1V470MED1TD
221 PowerSupply awr-103 c23 2.2 50 cea 2.2 50 647-UKL1H2R2KDDANATD
222 PowerSupply awr-103 c24 220 16 cea 220 25 647-UPW1E221MPD
223 PowerSupply awr-103 c3 47 16 cea 47 35 647-UPW1V470MED1TD
224 PowerSupply awr-103 c6 47 35 cea 47 35 647-UPW1V470MED1TD
225 PowerSupply awr-103 c7 10 35 cea 10 50 647-UPW1H100MDD1TA
226 PowerSupply awr-103 c8 1 50 cea 1 63 505-MKS21.0/63/5
227 PowerSupply awr-103 c9 220 80 cea 220 100 647-UPW2A221MHD
228 PowerSupply awr-103 d1 wz-140 0 0 0 0 512-1N5244B
229 PowerSupply awr-103 d2 wz-130 0 0 0 0 512-1N5243B
230 PowerSupply awr-103 d3 wz-061 0 0 0 0 512-1N5234B
231 PowerSupply awr-103 d4 wz-061 0 0 0 0 512-1N5234B
232 PowerSupply awr-103 q1 2sd313 0 0 0 0 512-ksc2073TU
233 PowerSupply awr-103 q10 2sc945 0 0 0 0 512-KSC2383YTA
234 PowerSupply awr-103 q11 2sc945 0 0 0 0 512-KSC1845FTA
235 PowerSupply awr-103 q12 2sd325 0 0 0 0 512-ksc2073TU
236 PowerSupply awr-103 q13 2sc945 0 0 0 0 512-KSC2383YTA
237 PowerSupply awr-103 q2 2sc869 0 0 0 0 512-KSC2383YTA
238 PowerSupply awr-103 q3 2sc869 0 0 0 0 512-KSC1845FTA
239 PowerSupply awr-103 q4 2sc1318 0 0 0 0 512-KSC2690AYS
240 PowerSupply awr-103 q5 2sb507 0 0 0 0 512-KSA940TU
241 PowerSupply awr-103 q6 2sa628 0 0 0 0 512-KSA1013YBU
242 PowerSupply awr-103 q7 2sa628 0 0 0 0 512-KSA992FBU
243 PowerSupply awr-103 q8 2sa720 0 0 0 0 512-KSA1220AYS
244 PowerSupply awr-103 q9 2sd325 0 0 0 0 512-ksc2073TU
245 PowerSupply awr-103 r1 10 ohms 1 0 0 71-CPF110R000FKE14
246 PowerSupply awr-103 r19 10 ohms 2 0 0 594-5083NW10R00J
247 PowerSupply awr-103 r20 10 ohms 0.5 0 0 71-CPF110R000FKEE6
248 PowerSupply awr-103 r21 100 ohms 2 0 0 594-5083NW100R0J
249 FunctionSwitch Assy aws-094 c1 220 6 cea 220 25 667-EEU-FM1V221
250 SurgeSuppressor awx-098 c1 10 63 cea 10 100 647-UPJ2A100MED1TD
251 Chassis filter cap c1 22000 80 cea 33000 100 661-E36D101N333MDB7M
252 Chassis filter cap c2 22000 80 cea 33000 100 661-E36D101N333MDB7M
253 PowerAmp mica insl 534-4662
254 PowerAmp mica insl 534-4662
255 PowerAmp mica insl 534-4662
256 PowerAmp mica insl 534-4662
257 PowerAmp mica insl 534-4662
258 PowerAmp mica insl 534-4662
259 PowerAmp mica insl 534-4662
260 PowerAmp mica insl 534-4662
261 Chassis thermal paste 576-P0200-19
262 Chassis thermal paste 576-P0200-19
263 PowerSupply-B awr-104 c10 470 100 ach-038 470 100 647-UHE2A471MHD6
264 PowerSupply-B awr-104 c11 2200 25 cea 2200 35 647-UPW1V222MHD
265 PowerSupply-B awr-104 c9 470 100 ach-038 470 100 647-UHE2A471MHD6
266 PowerSupply-B awr-104 d1 KBH25-04 512-GBPC2504
267 PowerSupply-B awr-104 d2 1s1886 863-1N4004RLG
268 PowerSupply-B awr-104 d3 1s1886 863-1N4004RLG
269 PowerSupply-B awr-104 d4 1s1886 863-1N4004RLG
270 PowerSupply-B awr-104 d5 1s1886 863-1N4004RLG
271 PowerSupply-B awr-104 d6 1s1885 863-1N4004RLG
272 PowerSupply-B awr-104 d7 1s1885 863-1N4004RLG
 
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I don't understand replacing the working output transistors with new. I would just reseat them. But you say you have done retransistoring and it works for you.

I would up the voltage of all the low voltage 'lytics to at least 25V maybe 35/50 depending on price breaks. I see some 470s and some UKL that are 10V in your list
 
thanks Blue Shadow. I'll take your advice on the low voltage caps. Is there any downside to taking a 10V up to a 50V replacement (other than a few pennies)?

Regarding the outputs - reseating the originals is my plan, but i've had originals come from a working unit that tested bad while doing a reseating, so i figured it would be best to get the replacements vetted - in case i needed to replace the set, in the event one or more of the originals didn't test out.
 
No real downside but I look at 25-35-50 and pick the cheapest if you are covering 25V or less.
 
Some of the later models have a AWX-108 surge killer pcb, which does not have a cap on it.
SurgeSuppressor awx-098 c1 10 63 cea x 10 100 647-UPJ2A100MED1TD

This transistor (KSD1616) is a carry-over from an old MTF list, and he has told me a 512-KSC2383YTA is a better choice, with a greater SOA.
Protection awm-090 q6 2sc945 0 0 0 0 0 512-KSD1616AGBU
 
Thanks merlynski and East Point. I made the change for awm-090 q6 to 512-KSC2383YTA, in the above list.

I will also sort through all the low voltage caps and change them to 25,35, or 50V caps.

For those tracking the list - for all these recommended changes, i will be editing the above list, and also describing the edits/changes, at the top. The hope is to get to a good clean list that can be used for SX-1050's going forward.
 
dustmaker - awr-104 was missing. I just added to the original post. not sure if you'll want to actually replace the bridge rectifier - but the replacement part is listed anyway.
 
My SX-1050 has AWR103 (ps regulators) and AWR-104 (ps rectifiers)

There are three electrolytic caps on the AWR-104, I did not buy or change any of the diodes (tested though) or ceramic caps.
,,,,,,,,,,,
Power Supply Rectifier,,,,,,,,,,,
AWR-104, C9, 470uF 80v CEA,647-UHE2A471MHD,T,,1,,,,,
AWR-104, C10, 470uF 80v CEA,647-UHE2A471MHD,T,,1,,,,,
AWR-104, C11, 2200uF 25v CEA,647-UPW1V222MHD,T,,1,,,,,
 
@Wyatt Weeks
Wyatt Weeks said:
merlynski - do you recall the part numbers for the new heat sinks you added/replaced on awr-104?
Click to expand...
No transistors on AWR-104, but on AWR-103, some of them I have had in a parts drawer for years, some came from 'bay and/or some from Amazon. Search for TO-220 heatsink.
I posted this in your BOM thread instead of dustmaker's refurb thread so as stay on track, as it fits better here.

Picture of AWR-103 after resto-modification:

DSCF0986crop.jpg

The original heatsink compound was dry as dust, and the transistors were loose on the heatsinks.
 
ivandezande said:
Any that are directly paired by emitter.
Click to expand...

Yes, right?

But I am pretty sure some have already crossed that bridge and could be willing to share.
There are 73 transistors on the list above and I wanted to check before getting my eyes crossed checking each of them.

M
 
There are four transistors on the (phono) Equalizer PCB: Q1,Q3 & Q2, Q4, AWF-020, in Differential amps that have red dots (on mine) that indicate they are select hFE transistors, by Pioneer. Those are the only ones marked in my SX-1050. There are a bunch of places, especially on the power amp PCB, AWH-047 that have bases or emitters in common that it would not hurt to match, but since there is a dc offset adjustment it is not needed to be done.
 
merlynski said:
There are four transistors on the (phono) Equalizer PCB: Q1,Q3 & Q2, Q4, AWF-020, in Differential amps that have red dots (on mine) that indicate they are select hFE transistors, by Pioneer. Those are the only ones marked in my SX-1050. There are a bunch of places, especially on the power amp PCB, AWH-047 that have bases or emitters in common that it would not hurt to match, but since there is a dc offset adjustment it is not needed to be done.
Click to expand...

words right out of my mouth! This is specifically aimed at the SX-1050, other models ARE different!!!

Vbe matching would have more (but still slight) impact, on the power amp especially.

That said, same manufacturer is good, same part number better, same gain code better yet and same batch tops the random pick sweeps.
 
Hello Everyone. I'm providing a cross check list between the above list and what is listed in Word format in the PDF archive AK section for the Pioneer SX-1050. I found that there are many issues with both lists while doing an Excel spreadsheet. In the noted sheet you will see colored cells. Yellow means the item is not even listed in the MS Word document provided by the site archive. False means the Word item does not match the list above. True means we have a match. Amazingly the filter caps weren't even listed in the Word Document. In the MTF column the results are compared to the list above. So I ask, who is right? I'd like to order but based on this data output I'm unclear.
 

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