Pioneer SX-1250 recap list
Excellent JT! :thmbsp: BTW, I thought it was an SX-850 that I sold you. :scratch2:
Here is my recap list for the SX-1250, I visually checked every board against the service manual and confirmed the caps for the the board numbers listed below, my 1250 was made Dec 1976. FYI I'm using a few Panasonic FM and FC caps in the preamp areas instead of PW caps.
Pioneer SX-1250 recap list (Updated 10/3/17, added soft start relay replacement)
Equalizer Amp Board (AWF-021-A) (Q1 & 3 and Q2 & 4 recommended for gain matching, but is not required)
AWF-021-A: C11: 470uF 6.3v CEA: 667-EEU-FM1E471B 470uF 25v
AWF-021-A: C12: 470uF 6.3v CEA: 667-EEU-FM1E471B 470uF 25v
AWF-021-A: C17: 3.3uF 50v CEANL: 647-UKL1H3R3KDDANA 3.3uF 50v
AWF-021-A: C18: 3.3uF 50v CEANL: 647-UKL1H3R3KDDANA 3.3uF 50v
AWF-021-A: C25: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWF-021-A: C26: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWF-021-A: C27: 220uF 63v CEA: 667-EEU-FC1J221 220uF 63v
AWF-021-A: C28: 220uF 63v CEA: 667-EEU-FC1J221 220uF 63v
AWF-021-A: C29: 100uF 35v CEA: 667-EEU-FM1H101 100uF 50v
AWF-021-A: C30: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWF-021-A: C31: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWF-021-A: C32: 100uF 35v CEA: 667-EEU-FM1H101 100uF 50v
Q1: 2SA726: 512-KSA992FBU
Q2: 2SA726: 512-KSA992FBU
Q3: 2SA726: 512-KSA992FBU
Q4: 2SA726: 512-KSA992FBU
Q5: 2SC1775: 512-KSC1845FTA:
Q6: 2SC1775: 512-KSC1845FTA:
Q7: 2SC1775: 512-KSC1845FTA:
Q8: 2SC1775: 512-KSC1845FTA:
Q9: 2SA872: 512-KSA992FBU
Q10: 2SA872: 512-KSA992FBU
Q11: 2SC1735: 512-KSC2383YTA
Q12: 2SC869: 512-KSC2383YTA
Q13: 2SA850: 512-KSA1013YBU
Q14: 2SA628A: 512-KSA1013YBU
Function Switch Board (AWS-094)
AWS-094: C1: 220uF 6.3v CEA: 667-EEU-FM1A221 220uF 10v
Flat Amp Board (AWG-042-0)
AWG-042-0: C7: 330uF 63v CEA: 667-EEU-FC1J331 330uF 63v
AWG-042-0: C8: 330uF 63v CEA: 667-EEU-FC1J331 330uF 63v
AWG-042-0: C9: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWG-042-0: C10: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWG-042-0: C11: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWG-042-0: C12: 22uF 16v CSZA: 647-UKL1V220KEDANA 22uF 35v
AWG-042-0: C21: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-042-0: C22: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-042-0: C27: 220uF 16v CEANL: 647-UKL1C221KPDANA 220uF 16v
AWG-042-0: C28: 220uF 16v CEANL: 647-UKL1C221KPDANA 220uF 16v
AWG-042-0: C31: 330uF 35v CEA: 667-EEU-FM1V331 330uF 35v
AWG-042-0: C32: 330uF 35v CEA: 667-EEU-FM1V331 330uF 35v
Q1: 2SC1775: 512-KSC1845FTA:
Q2: 2SC1775: 512-KSC1845FTA:
Q3: 2SA872: 512-KSA992FBU
Q4: 2SA872: 512-KSA992FBU
Q7: 2SA725: 512-KSA992FBU
Q8: 2SA725: 512-KSA992FBU
Control Amp Board (AWG-041-A)
AWG-041-A: C1: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-041-A: C2: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-041-A: C3: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-041-A: C4: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-041-A: C11: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C12: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C13: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C14: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C17: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C18: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C19: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C20: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C27: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C28: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C29: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C30: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C33: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C34: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C35: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C36: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-041-A: C37: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C38: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C39: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C40: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-041-A: C43: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
AWG-041-A: C44: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
Q1: 2SC1312: 512-KSC1845FTA:
Q2: 2SC1312: 512-KSC1845FTA:
Q3: 2SC1312: 512-KSC1845FTA:
Q4: 2SC1312: 512-KSC1845FTA:
Filter Amp Board (AWM-089-0)
AWM-089-0: C3: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-089-0: C6: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
AWM-089-0: C9: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-089-0: C12: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
Q1: 2SC1313: 512-KSC1845FTA:
Q2: 2SC1313: 512-KSC1845FTA:
Power Amp Board (AWH-048-A) (This list times two for the two amp boards) (Q1 and 2 recommended for gain matching, but is not required)
AWH-048-A: C2: 10uF 16v CEANL: 647-UKL1E100KDDANA 10uF 25v
AWH-048-A: C5: 220uF 16v CEANL: 647-UKL1C221KPDANA 220uF 16v
AWH-048-A: C11: .22uF 10v CSZA: 80-F612JF224J063A .22uF 63v
AWH-048-A: C15: 470uF 80v CEA: 647-UPW2A471MHD 470uF 100v
AWH-048-A: C16: 470uF 80v CEA: 647-UPW2A471MHD 470uF 100v
Q1: 2SA750: 512-KSA992FBU
Q2: 2SA750: 512-KSA992FBU
Q11: 2SC869: 512-KSC1845FTA
VR1: 470 ohm multi offset: 652-3296P-1-501LF 25 turn
VR2: 470 ohm single bias: 652-3386H-1-501LF 1 turn
TO-3 micas (Need a total of 8): 534-4636 (optional)
Protection Board (AWM-091-A)
AWM-091-A: C1: 470uF 6.3v CEA: 647-UPW1C471MPD 470uF 16v
AWM-091-A: C2: 470uF 6.3v CEA: 647-UPW1C471MPD 470uF 16v
AWM-091-A: C3: 4.7uF 35v CEA: 647-UPW1V4R7MDD 4.7uF 35v
AWM-091-A: C4: 100uF 16v CEA: 647-UPW1E101MED 100uF 25v
AWM-091-A: C5: 100uF 50v CEA: 647-UPW1H101MPD 100uF 50v
AWM-091-A: C6: 100uF 50v CEA: 647-UPW1H101MPD 100uF 50v
Q4: 2SC945: 512-KSC2383YTA
Q5: 2SC1166 (2SC1384): 512-KSC2690AYS
Q6: 2SC1166 (2SC1384): 512-KSC2690AYS
S1: ASR-010 MY4-02-DC24 relay: 653-MY4-02DC24
Stabilizer/Power Supply Board (AWR-106-A)
AWR-106-A: C1: 220uF 80v CEA: 647-UPW2A221MHD 220uF 100v
AWR-106-A: C2: 220uF 80v CEA: 647-UPW2A221MHD 220uF 100v
AWR-106-A: C5: 47uF 35v CEA: 647-UPW1H470MED 47uF 50v
AWR-106-A: C6: 47uF 35v CEA: 647-UPW1H470MED 47uF 50v
AWR-106-A: C7: 22uF 50v CEA: 647-UPW1J220MED 22uF 63v
AWR-106-A: C8: 22uF 50v CEA: 647-UPW1J220MED 22uF 63v
AWR-106-A: C9: 100uF 35v CEA: 647-UPW1H101MPD 100uF 50v
AWR-106-A: C10: 100uF 35v CEA: 647-UPW1H101MPD 100uF 50v
AWR-106-A: C11: 47uF 80v CEA: 647-UPW2A470MPD 47uF 100v
AWR-106-A: C12: 47uF 80v CEA: 647-UPW2A470MPD 47uF 100v
AWR-106-A: C13: 1000uF 25v CEB: 647-TVX1V102MCD 1000uF 35v
AWR-106-A: C15: 47uF 10v CEA: 647-UPW1C470MDD 47uF 16v
AWR-106-A: C16: 22uF 10v CEA: 647-UPW1C220MDD 22uF 16v
AWR-106-A: C17: 220uF 16v CEA: 647-UPW1V221MPD6 220uF 35v
AWR-106-A: C18: 47uF 10v CEA: 647-UPW1C470MDD 47uF 16v
AWR-106-A: C19: 47uF 10v CEA: 647-UPW1C470MDD 47uF 16v
Q1: 2SD313: 863-MJE15032G
Q2: 2SC869: 512-KSC2383YTA
Q3: 2SC1318: 512-KSC1845FTA
Q4: 2SC1384: 512-KSC2690AYS
Q5: 2SB507: 863-MJE15033G
Q6: 2SA628A: 512-KSA1013YBU
Q7: 2SA720: 512-KSA992FBU
Q8: 2SA684: 512-KSA1220AYS
Q9: 2SD325: 863-MJE15032G
Q10: 2SC945: 512-KSC2383YTA
Q11: 2SC945: 512-KSC1845FTA
Q12: 2SD325: 863-MJE15032G
Q13: 2SC945: 512-KSC2383YTA
TO-220 micas (need 2 of them): 534-4672
D1: WZ-240: 512-1N5252B
D2: 1S2473: 512-1N4148
D3: WZ-240: 512-1N5252B
D4: 1S2473: 512-1N4148
D5: WZ-061: 512-1N5234B
D6: 1S2473: 512-1N4148
VR1: 4.7K Ohms single turn: 652-3386H-1-502LF
VR2: 4.7K Ohms single turn: 652-3386H-1-502LF
Soft start relay: LY2-DC48: 653-LY2-DC48 (NOTE: The new relay can fit into the old case without any modifications, just pop the new and old relay cases off and swap the old case to the new relay and remount it.)
Power Supply Board (AWR-107-0)
AWR-107-0: C6: 470uF 100v CEB: 647-TVX2A471MCD 470uF 100v
AWR-107-0: C7: 470uF 100v CEB: 647-TVX2A471MCD 470uF 100v
AWR-107-0: C8: 470uF 25v CEA: 647-UPW1V471MPD 470uF 35v
AWR-107-0: C9: 470uF 25v CEA: 647-UPW1V471MPD 470uF 35v
BOM List
647-UKL1H4R7KDDANA | 6
647-UKL1H2R2KDDANA | 12
647-UPW1V4R7MDD | 1
647-UPW1V221MPD6 | 1
647-UPW1H101MPD | 4
647-UKL1H3R3KDDANA | 2
647-UKL1E100KDDANA | 6
80-F612JF224J063A | 2
647-UPW2A471MHD | 4
647-UPW1E101MED | 1
647-UKL1V220KEDANA | 8
647-UKL1C221KPDANA | 4
667-EEU-FM1E471B | 2
667-EEU-FM1E101 | 10
667-EEU-FC1J221 | 2
667-EEU-FM1H101 | 2
667-EEU-FM1V331 | 2
667-EEU-FC1J331 | 2
667-EEU-FM1A221 | 1
647-UPW1C471MPD | 2
647-UPW1V471MPD | 2
647-UPW2A221MHD | 2
647-UPW1H470MED | 2
647-UPW2A470MPD | 2
647-UPW1C470MDD | 3
647-UPW1J220MED | 2
647-UPW1C220MDD | 1
647-TVX1V102MCD | 1
647-TVX2A471MCD | 2
512-KSA992FBU | 15
512-KSC1845FTA | 16
512-KSC2383YTA | 6
512-KSA1013YBU | 3
512-KSC2690AYS | 3
863-MJE15032G | 3
863-MJE15033G | 1
512-KSA1220AYS | 1
512-1N5252B | 2
512-1N4148 | 3
512-1N5234B | 1
534-4636 | 8
534-4672 | 2
653-MY4-02DC24 | 1
653-LY2-DC48 | 1
652-3296P-1-501LF | 2
652-3386H-1-501LF | 2
652-3386H-1-502LF | 2