Pioneer SX-1980 recap and restoration thread!

Starting my thread on restoring my SX-1980, here is the cap list!

Pioneer SX-1980 cap list

EQ Amp Board (AWF-030)

AWF-030: C1: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWF-030: C2: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWF-030: C11: 2200uF 10v CEA: 667-EEU-FM1C222 2200uF 16v
AWF-030: C12: 2200uF 10v CEA: 667-EEU-FM1C222 2200uF 16v
AWF-030: C19: 220uF 6.3v CEA: 667-EEU-FM1V221 220uF 35v
AWF-030: C20: 220uF 6.3v CEA: 667-EEU-FM1V221 220uF 35v
AWF-030: C23: 220uF 35v CEA: 667-EEU-FM1V221 220uF 35v
AWF-030: C24: 220uF 35v CEA: 667-EEU-FM1V221 220uF 35v
AWF-030: C27: 10uF 50v CEANL: 647-UKL1H100KDDANA 10uF 50v
AWF-030: C28: 10uF 50v CEANL: 647-UKL1H100KDDANA 10uF 50v
AWF-030: C29: 10uF 50v CEANL: 647-UKL1H100KDDANA 10uF 50v
AWF-030: C30: 10uF 50v CEANL: 647-UKL1H100KDDANA 10uF 50v
AWF-030: C31: 220uF 35v CEA: 667-EEU-FM1V221 220uF 35v
AWF-030: C32: 220uF 35v CEA: 667-EEU-FM1V221 220uF 35v

Q3: 2SC1919: 512-KSC1845FTA
Q4: 2SC1919: 512-KSC1845FTA
Q5: 2SC1919: 512-KSC1845FTA
Q6: 2SC1919: 512-KSC1845FTA
Q7: 2SA726: 512-KSA992FBU
Q8: 2SA726: 512-KSA992FBU
Q9: 2SA872: 512-KSA992FBU
Q10: 2SA872: 512-KSA992FBU
Q11: 2SC1775: 512-KSC1845FTA
Q12: 2SC1775: 512-KSC1845FTA

Function Selector Board (GWS-129)

GWS-129: C1: 220uF 6.3v CEA: 667-EEU-FM1V221 220uF 35v

Flat Amp Board (AWG-058)

AWG-058: C5: 4.7uF 50v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-058: C6: 4.7uF 50v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-058: C7: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v
AWG-058: C8: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v
AWG-058: C9: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v
AWG-058: C10: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v
AWG-058: C11: 330uF 35v CEA: 667-EEU-FM1H331L 330uF 50v
AWG-058: C12: 330uF 35v CEA: 667-EEU-FM1H331L 330uF 50v

Q3: 2SC1919: 512-KSC1845FTA
Q4: 2SC1919: 512-KSC1845FTA
Q5: 2SA912: 512-KSA1013YBU
Q6: 2SA912: 512-KSA1013YBU
Q7: 2SC1885: 512-KSC2383YTA
Q8: 2SC1885: 512-KSC2383YTA

Tone Control Board (AWG-059)

AWG-059: C1: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-059: C2: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-059: C3: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-059: C4: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWG-059: C11: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C12: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C13: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C14: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C17: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C18: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C19: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C20: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C27: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C28: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C29: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C30: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C33: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C34: 100uF 10v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C35: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C36: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-059: C37: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C38: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C39: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C40: 100uF 16v CEA: 667-EEU-FM1E101 100uF 25v
AWG-059: C43: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
AWG-059: 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-119)

AWM-119-0: C1: .22uF 35v CSZA: 505-MKS2C032201BKI00 .22uF 63v
AWM-119-0: C2: .22uF 35v CSZA: 505-MKS2C032201BKI00 .22uF 63v
AWM-119-0: C3: .22uF 35v CSZA: 505-MKS2C032201BKI00 .22uF 63v
AWM-119-0: C4: .22uF 35v CSZA: 505-MKS2C032201BKI00 .22uF 63v
AWM-119-0: C5: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-119-0: C6: 4.7uF 25v CSZA: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-119-0: C11: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v
AWM-119-0: C12: 10uF 25v CSZA: 647-UKL1E100KDDANA 10uF 25v

Q1: 2SC1313: 512-KSC1845FTA
Q2: 2SC1313: 512-KSC1845FTA

Power Amp Board (L) (GWH-109)

GWH-109: C1: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
GWH-109: C3: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
GWH-109: C35: .22uF 25v CSSA: 505-MKS2C032201BKI00 .22uF 63v

VR1: 150K ohm multi offset: 652-3296P-1-204LF
VR3: 100 ohm single bias: 652-3386H-1-101LF

Q33: 2SC869: 512-KSC1845FTA

Power Amp Board (R) (GWH-110)

GWH-109: C2: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
GWH-109: C4: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
GWH-109: C36: .22uF 25v CSSA: 505-MKS2C032201BKI00 .22uF 63v

VR2: 150K ohm multi offset: 652-3296P-1-204LF
VR4: 100 ohm single bias: 652-3386H-1-101LF

Q34: 2SC869: 512-KSC1845FTA

Meter Amp Board (AWM-122)

AWM-122: C1: .47uF 35v CSZA: 505-MKS2C034701CJI00 .47uF 63v
AWM-122: C2: .47uF 35v CSZA: 505-MKS2C034701CJI00 .47uF 63v
AWM-122: C3: 220uF 6.3v CEA: 647-UPW1A221MED 220uF 10v
AWM-122: C4: 220uF 6.3v CEA: 647-UPW1A221MED 220uF 10v

Power Supply Board (AWR-154)

AWR-154: C203: 3300uF 35v CEB: 647-TVX1H332MDD 3300uF 50v
AWR-154: C204: 220uF 160v CEB: 647-TVX2C221MDD 220uF 160v
AWR-154: C205: 220uF 160v CEB: 647-TVX2C221MDD 220uF 160v
AWR-154: C210: 100uF 10v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C211: 100uF 16v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C212: 100uF 10v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C213: 100uF 6.3v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C216: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C217: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C218: 10uF 50v CEA: 647-UPW1J100MDD 10uF 63v
AWR-154: C219: 10uF 50v CEA: 647-UPW1J100MDD 10uF 63v
AWR-154: C220: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
AWR-154: C221: 100uF 100v CEA: 647-UPW2A101MHD 100uF 100v
AWR-154: C222: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C223: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C224: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C225: 100uF 50v CEA: 647-UPW1J101MPD 100uF 63v
AWR-154: C301: 100uF 16v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C302: 100uF 16v CEA: 647-UPW1E101MED 100uF 25v
AWR-154: C303: 47uF 16v CEA: 647-UPW1E470MDD 47uF 25v
AWR-154: C305: 10uF 16v CEA: 647-UPW1E100MDD 10uF 25v

Q201: 2SC945: 512-KSC2383YTA
Q202: 2SC945: 512-KSC2383YTA
Q203: 2SD712: 863-MJE15032G
Q204: 2SC945: 512-KSC2383YTA
Q205: 2SD325: 863-MJE15032G
Q208: 2SC945: 512-KSC2383YTA
Q209: 2SA628: 512-KSA1013YBU
Q210: 2SD712: 863-MJE15032G
Q211: 2SB682: 863-MJE15033G
Q212: 2SC1318: 512-KSC2690AYS
Q213: 2SA720: 512-KSA1220AYS
Q214: 2SC869: 512-KSC2383YTA
Q215: 2SA628: 512-KSA1013YBU
Q216: 2SD325: 863-MJE15032G
Q217: 2SB536: 863-MJE15033G
Q301: 2SA872: 512-KSA992FBU
Q302: 2SC1438: 512-KSC2690AYS

D212: EQA01-35R 35V 1/2W zener: 512-1N5248B and 512-1N5247B in series
D213: EQA01-35R 35V 1/2W zener: 512-1N5248B and 512-1N5247B in series

S1: Relay (Soft Start) ASR-046: 653-LY1-0-DC24 (Achtung! Using this relay requires you to remove R102 and run a jumper wire from the + terminal of the 3300uF 35v axial cap over to the pad of R102 that connects to pin 2. Be very careful, if you put it to the wrong side of the R102, you will short the 24v supply to the 100v supply. Not good. To be extra safe, you can just remove R102 and connect the jumper wire straight to pin 2)

S2: Relay (Protection) ASR-048: 653-MY2-02-DC48

+80v and -80v regulator mod, this replaces the 2SK34 and several other parts. Refer to this post here for instructions on how to assemble it and here on how to put it in.

BOM list for the mod (this is enough parts for the 2 boards required):

512-KSP92TA | 2
512-KSP42TA | 2
660-MFS1/4LCT52R122J | 4
604-WP132XGC | 4
660-MFS1/4DCT52R1004 | 2

Most single sided breadboards will work, such as these or this one.

Filter caps: NCC 22000uF 100v 3" diameter x 4 5/8" high:

Main BOM List

647-UKL1H2R2KDDANA | 14
647-UKL1H4R7KDDANA | 8
667-EEU-FM1E101 | 8
667-EEU-FM1V221 | 7
647-UKL1E100KDDANA | 4
505-MKS2C032201BKI00 | 6
647-UPW2A101MHD | 6
652-3296P-1-204LF | 2
652-3386H-1-101LF | 2
647-UPW1E101MED | 6
647-UPW1A221MED | 2
667-EEU-FM1C222 | 2
667-EEA-FC1E100 | 4
667-EEU-FM1H331L | 2
647-UKL1H100KDDANA | 4
505-MKS2C034701CJI00 | 2
647-TVX1H332MDD | 1
647-TVX2C221MDD | 2
647-UPW1J101MPD | 6
647-UPW1E470MDD | 1
647-UPW1J100MDD | 2
647-UPW1E100MDD | 1
653-LY1-0-DC24 | 1
653-MY2-02-DC48 | 1
512-KSC1845FTA | 16
512-KSA992FBU | 5
512-KSC2690AYS | 2
512-KSA1220AYS | 1
512-KSA1013YBU | 4
512-KSC2383YTA | 7
863-MJE15032G | 4
863-MJE15033G | 2
512-1N5248B | 2
512-1N5247B | 2

Nice work Matt..

I have a feeling you will end up doing more than just this one, Matt

panasonlc fc or fm, what's this eeu? something new?

i also use / convert to 24v LY1 relay.

Is that a hint that you are considering sending yours Skylab?

Hey Mark! They are Panasonic FM caps. I'm going to be experimenting with PW and FM in the preamp sections to see if there is a difference between the two or not, I've seen all the reviews saying how good they sound and I was wondering if there were any sonic changes between PW and FM. As for the relay, I have a line on a LY1-0-DC48, I'm going to be finding out soon if I can get one from this supplier. If not, I will be converting to the 24VDC relay.

I may have an extra in my parts stash, will look this evening.

Close--- MY4-02-48
-Lee

Darn, oh well. Thank you for looking though!

Ordered the parts today! Still waiting on the quote for the SS relay, so I just went ahead and ordered the other parts, as I don't know how long it will take to get the quote. Can't wait for them to get here!

I'm looking forward to your progress on your SX-1980 as mine is probably overdue for the same treatment. At the moment it is having issues with the protection relay and I want to replace that so I can keep listening to it in the meantime.

Is the 653-MY2-02-DC48 a direct drop in replacement for the ASR-048 after removing the top two tabs?

I also have a LY2-0-DC48 to replace the ASR-46 but from what I read here:

http://www.audiokarma.org/forums/showthread.php?t=378925&page=4

either the LY2 or the PCB needs modification to install.

I'm just unclear as to what tabs need to be wired above or below the PCB depending on if I bend them or cut slots in the PCB.

Yes, the MY2 is a drop in replacement after those tabs are removed. The LY2, as Mark said, has two choices to make it fit. Bend the two tabs that don't go through the board over, which are pin# 4 and 5 and wire them, pin 4 to pin 3 and pin 5 to pin 6, then pin 1 can be cut off. Or, cut holes in the board and do the same thing, only on the foil side of the board.

Awesome!! Thanks for the follow up and detailed answer.

Best of luck on this project and keep us updated....

Here are some photos of it before restoration, I have not done anything to it other then clean the controls. The photos are a little big to post in the thread, so I will provide the links to them. More will be following!

I see the the walnut end caps on one side are a little banged up. Let me know if you want me to make a couple new ones for you. I have some scrap sitting around that would work. I could also make you a new case if you needed it.

That is from shipping damage, they also bent the top corner of very rear fin on the right side heatsink. I already have a couple of blocks from Skylab, he was kind enough to give them to me for the cost of shipping only. The case on it is mint, so I don't need one right now. The receiver appears to have been well taken care of. Thank you for the kind offers though!

Thank you Remington!

Quick update, I got the parts on Monday, but have not had a chance to work on it as I'm keeping my commitment to realjimjim to get his 1250 recapped and back to him by the end of next week. But after I get that done, the 1980 better look out!

Nice! Given how good the SX-1280 you just restored for me sounds, I know that your 1980 will end up being something really special!

mattsd said:

Thank you Remington!

Quick update, I got the parts on Monday, but have not had a chance to work on it as I'm keeping my commitment to realjimjim to get his 1250 recapped and back to him by the end of next week. But after I get that done, the 1980 better look out!

Click to expand...

Ahhh, that is true heavenly bliss to hear such spoken words!

I'll be waiting out on my porch for that monster!

The Omron MY2-02-DC48 is rated kinda low for something like a 1980. But I admit that there are not a lot of alternatives. One that is a little bit better is the Panasonic HC2-HP-DC48V-F, but both Mouser and Digikey stopped carrying them. However, if you poke around the web, they can be found.