Pioneer SPEC 1 repair and restoration thread!

I got a SPEC 1 to repair and restore from fellow AK member r11cool. It quit working with a pop/sizzle sound when he plugged his iPod into the AUX1 jack, so I have to find out why it quit and get the cap and transistor list together for the complete restore. At this time, I have not been able to get into it very far, but I have found bad transistors, so we'll have to see what turns up with a in depth inspection. I will also be getting a SPEC 4 from him, so I will have a thread on that as well. Stay tuned!

Sounds cool Matt. I look forward to your restore notes! I also have a spec 1,4 and the preamp has static in its left channel I have still not figured out how to repair.

This is a much needed thread , thanks Matt

I did all 3 of my Spec 1's to EW's recommendations on the caps and power supply upgrades, outstanding pre-amps made better by EW.

It works perfectly! The transistors I thought were bad in reality were not, I had the leads of the meter on the wrong leads of the transistors. Oops. I'm going to be getting together a cap list for the recap and posting it on here, so stay tuned!

Matt, EW has done that and also highlited which are in the signal path for audio grade replacement. If you can't find it let me know and I'll scan and post the one I have.

I have a big pop when I adjust the Bass controls , if you don't turn the volume down while it will give you a mild heart attack .

I would like to know if any one in Norcal could recommend a good reputable repair tech . Thank jp

Pioneer SPEC-1 recap list

JP, start your own thread on that subject, you'll get more attention. However, look through this thread here, it might help you. Reputable service techs in your state.

And here is the recap list! Glenn, I know you have done a lot more of these things then me, tell me if there's anything that I should change or I should add. I've checked every cap and transistor in the list against the boards themselves, so it is 100% accurate, at least for this SPEC-1.

Pioneer SPEC-1 recap list

Input Circuit Board (AWF-017) (Q1 & 3 and Q2 & 4 is recommended for gain matching)

AWF-017: C7: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v
AWF-017: C8: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v
AWF-017: C9: 470uF 6.3v CEA: 667-EEU-FM1A471 470uF 10v
AWF-017: C10: 470uF 6.3v CEA: 667-EEU-FM1A471 470uF 10v
AWF-017: C15: 3.3uF 63v CEA: 667-EEU-FC2A3R3 3.3uF 100v
AWF-017: C16: 3.3uF 63v CEA: 667-EEU-FC2A3R3 3.3uF 100v
AWF-017: C27: 22uF 16v BP: 647-UES1E220MEM 22uF 25v
AWF-017: C28: 22uF 16v BP: 647-UES1E220MEM 22uF 25v

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: 2SC1885: 512-KSC2383YTA
Q8: 2SC1885: 512-KSC2383YTA
Q9: 2SA912: 512-KSA1013YBU
Q10: 2SA912: 512-KSA1013YBU

Power Supply Board (AWR-094)

AWR-094: C1: 100uF 63v CEA: 647-UPW2A101MHD 100uF 100v
AWR-094: C2: 100uF 63v CEA: 647-UPW2A101MHD 100uF 100v
AWR-094: C5: 220uF 35v CEA: 647-UPW1H221MPD 220uF 50v
AWR-094: C6: 470uF 50v CEA: 647-UPW1J681MHD3 680uF 63v
AWR-094: C7: 470uF 50v CEA: 647-UPW1J681MHD3 680uF 63v
AWR-094: C10: 100uF 50v CEA: 647-UPW2A101MHD 100uF 100v
AWR-094: C11: 220uF 25v CEA: 647-UPW1H221MPD 220uF 50v
AWR-094: C12: 330uF 25v CEA: 647-UPW1V331MPD 330uF 35v

Q1: 2SD313: 863-MJE15032G
Q2: 2SB507: 863-MJE15033G
Q3: 2SC869: 512-KSC2383YTA
Q4: 2SA628: 512-KSA1013YBU
Q5: 2SC945: 512-KSC2383YTA
Q6: 2SA628: 512-KSA1013YBU
Q7: 2SD313: 863-MJE15032G

Mixing Amp Board (AWM-083)

AWM-083: C2: 1uF 50v CEANL: 647-UKL1H010KDDANA 1uF 50v
AWM-083: C5: 4.7uF 50v CEA: 667-EEU-FC1H4R7 4.7uF 50v
AWM-083: C7: 1uF 50v CEANL: 647-UKL1H010KDDANA 1uF 50v
AWM-083: C8: 1uF 50v CEANL: 647-UKL1H010KDDANA 1uF 50v
AWM-083: C9: 1uF 50v CEANL: 647-UKL1H010KDDANA 1uF 50v
AWM-083: C14: 100uF 25v CEA: 667-EEU-FM1H101 100uF 50v
AWM-083: C15: 100uF 25v CEA: 667-EEU-FM1H101 100uF 50v
AWM-083: C16: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWM-083: C17: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWM-083: C18: 2.2uF 63v CEA: 667-EEU-FC2A2R2 2.2uF 100v

Q1: 2SC1313: 512-KSC1845FTA
Q2: 2SC1313: 512-KSC1845FTA
Q3: 2SA726: 512-KSA992FBU
Q4: 2SA726: 512-KSA992FBU
Q5: 2SC1313: 512-KSC1845FTA
Q6: 2SC1313: 512-KSC1845FTA

Relay: 653-MY4-02-DC24

Filter Amp Board (AWM-082) (The "B" revision of this board has a 1000uF 25v CEA cap in front of the reed relay, unknown cap number.)

AWM-082: C1: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C2: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C3: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C4: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C5: 33uF 25v BP: 647-UES1E330MPM 33uF 25v
AWM-082: C6: 33uF 25v BP: 647-UES1E330MPM 33uF 25v
AWM-082: C7: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v (Silk screen polarity is wrong!)
AWM-082: C8: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v (Silk screen polarity is wrong!)
AWM-082: C9: 4.7uF 35v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-082: C10: 4.7uF 35v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-082: C27: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v (Silk screen polarity is wrong!)
AWM-082: C28: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v (Silk screen polarity is wrong!)
AWM-082: C29: 4.7uF 35v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-082: C30: 4.7uF 35v CEANL: 647-UKL1H4R7KDDANA 4.7uF 50v
AWM-082: C31: 10uF 25v CEANL: 647-UKL1E100KDDANA 10uF 25v
AWM-082: C32: 10uF 25v CEANL: 647-UKL1E100KDDANA 10uF 25v
AWM-082: C33: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C34: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C35: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C36: 3.3uF 25v BP: 647-UES1H3R3MDM 3.3uF 50v
AWM-082: C37: 100uF 6.3v CEA: 667-EEU-FM1E101 100uF 25v
AWM-082: C38: 100uF 6.3v CEA: 667-EEU-FM1E101 100uF 25v
AWM-082: C51: 470uF 6.3v CEA: 667-EEU-FM1A471 470uF 10v
AWM-082: C52: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v
AWM-082: C53: 10uF 16v CEA: 667-EEA-FC1E100 10uF 25v

Q1: 2SC1885: 512-KSC2383YTA
Q2: 2SC1885: 512-KSC2383YTA
Q3: 2SA912: 512-KSA1013YBU
Q4: 2SA912: 512-KSA1013YBU
Q5: 2SC1885: 512-KSC2383YTA
Q6: 2SC1885: 512-KSC2383YTA
Q7: 2SC1885: 512-KSC2383YTA
Q8: 2SC1885: 512-KSC2383YTA
Q9: 2SC1885: 512-KSC2383YTA
Q10: 2SC1885: 512-KSC2383YTA
Q11: 2SA912: 512-KSA1013YBU
Q12: 2SA912: 512-KSA1013YBU
Q15: 2SC1166: 512-KSC2690AYS
Q16: 2SC945: 512-KSC2383YTA
Q17: 2SC945: 512-KSC2383YTA

If B revision, then add this to BOM:

667-EEU-FM1V102 | 1

Fuse Board (AWX-091)

AWX-091: C8: 1000uF 80v CEA (Snap-in): 647-LGY2A102MELA30 1000uF 100v
AWX-091: C9: 1000uF 80v CEA (Snap-in): 647-LGY2A102MELA30 1000uF 100v
AWX-091: C10: 1000uF 50v CEA: 647-UPW1J102MHD 1000uF 63v

Tone Amp Board (AWG-035) (Q1 & 3 and Q2 & 4 should be gain matched)

AWG-035: C67: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-035: C68: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-035: C69: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v
AWG-035: C70: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v
AWG-035: C75: 220uF 6.3v CEA: 667-EEU-FM1E221 220uF 25v
AWG-035: C76: 220uF 6.3v CEA: 667-EEU-FM1E221 220uF 25v
AWG-035: C83: 3.3uF 63v CEA: 667-EEU-FC2A3R3 3.3uF 100v
AWG-035: C84: 3.3uF 63v CEA: 667-EEU-FC2A3R3 3.3uF 100v
AWG-035: C87: 22uF 16v CEANL: 647-UKL1V220KEDANA 22uF 35v
AWG-035: C88: 22uF 16v CEANL: 647-UKL1V220KEDANA 22uF 35v
AWG-035: C91: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-035: C92: 2.2uF 50v CEANL: 647-UKL1H2R2KDDANA 2.2uF 50v
AWG-035: C93: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v
AWG-035: C94: 10uF 25v CEA: 667-EEA-FC1E100 10uF 25v

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: 2SC1885: 512-KSC2383YTA
Q8: 2SC1885: 512-KSC2383YTA
Q9: 2SA912: 512-KSA1013YBU
Q10: 2SA912: 512-KSA1013YBU
Q11: 2SC1885: 512-KSC2383YTA
Q12: 2SC1885: 512-KSC2383YTA

BOM List

667-EEA-FC1E100 | 8
667-EEU-FM1A471 | 3
667-EEU-FC2A3R3 | 4
647-UES1E220MEM | 2
647-UPW2A101MHD | 3
647-UPW1H221MPD | 2
647-UPW1V331MPD | 1
647-UPW1J102MHD | 1
647-UPW1J681MHD3 | 2
647-UKL1H010KDDANA | 4
647-UKL1H2R2KDDANA | 10
667-EEU-FM1H101 | 2
667-EEU-FC1H4R7 | 1
667-EEU-FC2A2R2 | 1
647-UES1H3R3MDM | 8
647-UES1E330MPM | 2
647-UKL1H4R7KDDANA | 4
647-UKL1E100KDDANA | 2
667-EEU-FM1E101 | 2
667-EEU-FM1E221 | 2
647-UKL1V220KEDANA | 2
647-LGY2A102MELA30 | 2
512-KSA992FBU | 10
512-KSC1845FTA | 8
512-KSC2383YTA | 18
512-KSA1013YBU | 10
863-MJE15032G | 2
863-MJE15033G | 1
512-KSC2690AYS | 1
653-MY4-02-DC24 | 1

All parts were confirmed to be in stock at the time of posting.

Thanks Mattsd , I will try Crucial audio when the holiday is over . Jp

Matts , do you have a link maybe to the whole list of parts?
maybe one that in your basket?
thanks

omri617 said:

Matts , do you have a link maybe to the whole list of parts?
maybe one that in your basket?
thanks

Click to expand...

you don't need that,
register for free, then
grab his BOM List as a text block with a control c:


667-EEA-FC1E100 | 8
667-EEU-FM1A471 | 3
667-EEU-FC2A3R3 | 4
647-UES1E220MEM | 2
647-UPW2A101MHD | 3
647-UPW1H221MPD | 2
647-UPW1V331MPD | 1
647-UPW1J102MHD | 3
647-UKL1H010KDDANA | 4
647-UKL1H2R2KDDANA | 10
667-EEU-FM1H101 | 2
667-EEU-FC1H4R7 | 1
667-EEU-FC2A2R2 | 1
647-UES1H3R3MDM | 8
647-UES1E330MPM | 2
647-UKL1H4R7KDDANA | 4
647-UKL1E100KDDANA | 2
667-EEU-FM1E101 | 2
667-EEU-FM1E221 | 2
647-UKL1V220KEDANA | 2
667-ECO-S2AA102CA | 2
512-KSA992FBU | 10
512-KSC1845FTA | 8
512-KSC2383YTA | 15
512-KSA1013YBU | 10
863-MJE15032G | 2
863-MJE15033G | 1
512-KSD1616AGBU | 3
512-KSC2690AYS | 1

and then go to Mouser's Services & Tools menu
select Part List Importer

and use a control v to put the text into the box under Step 1
select a Step 2 destination
and click the import button.

Parts ordered! Should get here Friday (notice I say "should". )

thanks! i had your list copied by Mark's tip.
46.88 usd?

$54.72 USD including the relay, I forgot to add that when I first did the BOM list.

And here are some board photos, finally!

Tone amp before



Tone amp after



Input board before



Input board after



Fuse board before



Fuse board after



More to follow!

I am following this thread...I will be getting in a Spec 1 later in the week..

Thanks for the cap and relay list...Placing a order now.

One item I do need is Bass Rotary Switch (ASD-042).

And here are the final board photos!

Filter amp board before



Filter amp after



Mixing amp board after, I forgot to get a before shot of it. Bad me! :nono:



Power supply before



Power supply after



And here they are completed!

Has this been updated at all with the realy ? I need to order my parts but wanna make sure all is there and good .
Thanks

Yes it has, I added the relay quite awhile ago, 07/06/2012 to be exact.

I just ordered the caps and transistors to refurb my working Spec 1. Been wanting to do it for awhile now. Thanks alot mattsd for the list and new trick learned at Mouser. Man, makes it easy to order.

Did not hear from you your take on the sound of your Spec 1 after replacing the components. How bout it?

what is recommended to clean the silver face