Pioneer Spec 1 Pre-Amp Sound Issue

Could you tell me where to find a cap and transistor BOM list for the spec 2? Thanks. I've searched the AK forums and found nothing, unless I worded it wrong.
 
I need replacements for 647-LGY2A102MELA30, 647-UPW1A471MPD, 512-KSC2690AYS,
667-EEU-FM1A471, 505-MKS2C041001FJC00 they are backordered on mouser.
 
Parts needing subbed in bold:

647-LGY2A102MELA30
: 661-EKMH101VNN122MQ
647-UPW1A471MPD: 647-UPW1C471MPD
667-EEU-FM1A471: 667-EEU-FM1A471B
505-MKS2C041001FJC00: 505-MKS2C041001FJI00

On the 2690, there is no good sub for that, though a KSC2383 can do temporarily if you have to replace the 2SC1166. The 2690s are due in on May 30th, so it's not too long of a wait.. Also, I made some changes from the list posted currently to the transistors used for the SEPP drivers in the phono, filter, tone and buffer amp sections. These have better dissipation than the KSC2383/KSA1013 combo and the best performance out of the 4 different transistor pairings I tried out for subbing the 1885/912 pairs.

Input Circuit Board (AWF-017)

Q7: 2SC1885: 757-TTC004BQ
Q8: 2SC1885: 757-TTC004BQ
Q9: 2SA912: 757-TTA004BQ
Q10: 2SA912: 757-TTA004BQ

Filter Amp Board (AWM-082)

Q1: 2SC1885: 757-TTC004BQ
Q2: 2SC1885: 757-TTC004BQ
Q3: 2SA912: 757-TTA004BQ
Q4: 2SA912: 757-TTA004BQ
Q5: 2SC1885: 757-TTC004BQ
Q6: 2SC1885: 757-TTC004BQ
Q7: 2SC1885: 757-TTC004BQ
Q8: 2SC1885: 757-TTC004BQ
Q9: 2SC1885: 757-TTC004BQ
Q10: 2SC1885: 757-TTC004BQ
Q11: 2SA912: 757-TTA004BQ
Q12: 2SA912: 757-TTA004BQ

Tone Amp Board (AWG-035)

Q7: 2SC1885: 757-TTC004BQ
Q8: 2SC1885: 757-TTC004BQ
Q9: 2SA912: 757-TTA004BQ
Q10: 2SA912: 757-TTA004BQ
Q11: 2SC1885: 757-TTC004BQ
Q12: 2SC1885: 757-TTC004BQ
 
Matt, for the c1885/a912 sepp drivers, did you try the:
512-KSA1220AYS to-126 ecb 120/a160 1.2a 1.2w/20w 175mhz 35-320hfe
512-KSC2690AYS to-126 ecb 120/a160 1.2a 1.2w/20w 175mhz 35-320hfe
assuming that eventually the ksc-2690's will be available.

NOT to change your mind, but to change MINE with empirical evidence.

757-TTA004BQ pnp to-126 ecb 160v 1.5a 1.5w/10w 100mhz 80-280hfe
757-TTC004BQ npn to-126 ecb 160v 1.5a 1.5w/10w 100mhz 80-280hfe

The specs are similar, slightly slower.
 
Here's the Spec 1 and 2 I'm ordering parts for. I hope to get it lined out. Once I get it working good I'll clean it up and polish it.
 

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Matt, for the c1885/a912 sepp drivers, did you try the:
512-KSA1220AYS to-126 ecb 120/a160 1.2a 1.2w/20w 175mhz 35-320hfe
512-KSC2690AYS to-126 ecb 120/a160 1.2a 1.2w/20w 175mhz 35-320hfe
assuming that eventually the ksc-2690's will be available.

NOT to change your mind, but to change MINE with empirical evidence.

757-TTA004BQ pnp to-126 ecb 160v 1.5a 1.5w/10w 100mhz 80-280hfe
757-TTC004BQ npn to-126 ecb 160v 1.5a 1.5w/10w 100mhz 80-280hfe

The specs are similar, slightly slower.

I did, I tried the KSC2690/KSA1220, KSC3503/KSA1381, KSC2383/KSA1013 and the TTC/TTA004 combos. I will be doing a detailed write up, but my bench is slammed so time is limited right now.
 
I have some led bulbs that work in the Yamaha MX-800/U VU meters, not sure what voltage/mA they are. I got them from ebay a while back.
 
Hey Mattsd, could you tell me the output transistor mica insulator part # for the spec 2? The spec 2 takes 6 each in total and 3 of each mj21195g and mj21196g for each heatsink, right? Thanks.
 
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I am curious, are the spec 1 and sx-1250 volume's similar internally with laser precision cut parts and are both gold or whatever? I need to clean the spec 1 volume better. I unsoldered my sx-1250 volume and loosened the screws enough to get D5 in there, but not sure I could do the same with the spec 1.
 
The day the spec 2 popped and went into protection mode I felt of the speaker wire of the right channel and it was kinda warm, what would that suggest?
 
Got all the caps and transistors changed in the spec 1, but when I try to test with DBT the light won't come on at all and it's getting juice to the spec 1 main electric cord and the power switch read the same thing. When off it has more juice than when I turn it on. I am using a 75W bulb.
 
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