sansui 881 recap list

[gorfmonger]

Hello Experts,

I am working on a Sansui 881 and would like to do a recap. I put list together and was hoping that somebody with more expertise could review it and make sure I and getting the right parts.
Also, I don't know what type of caps I should get for the large filter caps. Do you stick with the UPW from Nichicon or use something else.

Thanks for your help
Todd

Sansui 881 parts list



F-1507 TUNER CIRCUIT BOARD

F-1507 C20 512100 10 16V EC
F-1507 C21 513479 4.7 16V EC
F-1507 C32 512100 10 16 EC
F-1507 C36 515229 2.2 50V EC
F-1507 C37 512101 100 16V EC
F-1507 C39 513479 4.7 25V EC
F-1507 C40 513479 4.7 25V EC
F-1507 C47 512101 100 16V EC
F-1507 C53 512100 10 16V EC
F-1507 C54 515109 1 50V EC
F-1507 C55 515339 3.3 50 EC
F-1507 C56 515109 1 50V EC
F-1507 C57 515109 1 50V EC
F-1507 C58 512100 10 16V EC
F-1507 C59 519101 1 50V EC
F-1507 C61 519101 1 50V EC
F-1507 C66 512100 10 16V EC
F-1507 C72 515109 1 50V EC
F-1507 C73 515339 3.3 50V EC
F-1507 C75 512101 100 16V EC
F-1507 C81 515339 33 50V EC


F-2433 EQUALIZER CIRCUIT BOARD

F-2433 C1 519102 3.3 50V EC 647-UPW1H3R3MDD
F-2433 C2 510470 4.7 6.3V EC 647 - UPW1E4R7MDD
F-2433 C7 519101 1 50V EC 667 - ECQ - V1H105JL
F-2433 C8 519101 1 50V EC 667 - ECQ - V1H105JL
F-2433 C601 515161 100 50V EC 647-UPW1H101MPD
F-2433 C601 510221 220 6.3V EC 647-UPW1A221MED


F-2434 TONE CONTROL CIRCUIT BOARD

F-2434 C5 519101 1 50V EC 667 - ECQ - V1H105JL
F-2434 C6 519101 1 50V EC 667 - ECQ - V1H105JL
F-2434 C9 510101 100 6.3V EC 647 - UPW0J101MDD
F-2434 C10 510101 100 6.3V EC 647 - UPW0J101MDD
F-2434 C11 519001 10 25V EC 647-UPW1H100MDD6
F-2434 C12 519001 10 25V EC 647-UPW1H100MDD6
F-2434 C25 519101 1 50V EC 667 - ECQ - V1H105JL
F-2434 C26 519101 1 50V EC 667 - ECQ - V1H105JL
F-2434 C27 510221 220 6.3 EC 647-UPW1A221MED
F-2434 C28 510221 220 6.3 EC 647-UPW1A221MED
F-2434 C29 519001 10 25V EC 647-UPW1H100MDD6
F-2434 C30 519001 10 25V EC 647-UPW1H100MDD6
F-2434 C602 519106 4.7 50V EC 647 - UPW1H4R7MDD
F-2434 C603 519101 1 50V EC 667 - ECQ - V1H105JL
F-2434 C605 510470 47 6.3V EC 647 - UPW0J470MDD6
F-2434 C606 519106 4.7 50V EC 647 - UPW1H4R7MDD
F-2434 C609 515101 100 50V EC 647-UPW1H101MPD
F-2434 C610 513101 100 35V EC 647-UPW1H101MPD


F-2436 DRIVER CIRCUIT BOARD

F-2436 C1 519103 0.47 50V EC 667 - ECQ - V1H474JL5
F-2436 C2 519103 0.47 50V EC 667 - ECQ - V1H474JL5
F-2436 C7 530101 100 6.3V BPEC 647 - UES0J101MPM
F-2436 C8 530101 100 6.3V BPEC 647 - UES0J101MPM
F-2436 C11 515101 100 50V EC 647-UPW1H101MPD
F-2436 C12 515101 100 50V EC 647-UPW1H101MPD


F-2437 POWER SUPPLY CIRCUIT BOARD

F2437 C4 549103 100 50V EC 647-UPW1H101MPD
F2437 C5 515101 100 50v EC 647-UPW1H101MPD
F2437 C7 512470 47 16v EC 647 - UPW1C470MDD
F2437 C9 512221 220 16V EC 647 - UPW1C221MPD1TD
F2437 C11 515470 47 50V EC 647 - UPW1H470MED1TA
F2437 C12 510221 220 6.3V EC 647-UPW1A221MED
F2437 C13 515109 1 50V EC 667 - ECQ - V1H105JL
F2437 C14 530470 4.7 6.3V BPEC 647 - UES1E4R7MDM
F2437 C15 535109 1 50V BPEC 647 - UES1H010MDM
F2437 C18 515339 3.3 50V EC 647-UPW1H3R3MDD
F2437 C19 515339 3.3 50V EC 647-UPW1H3R3MDD
F2437 C20 515339 3.3 50V EC 647-UPW1H3R3MDD
F2437 C21 515339 3.3 50V EC 647-UPW1H3R3MDD


OTHER PARTS TOP SIDE

C703 559360 10000 50V EC
C704 559360 10000 50V EC


OTHER PARTS BOTTOM SIDE

C709 515109 1 50V EC

 

[LBPete]

Did you make this list from the service manual or from the actual components on the boards? The only way to get a correct, accurate list is verifying what's actually on the boards. Sansui is infamous for making running changes that aren't in the service manual. Are those part numbers you list after the cap value?

- Pete

 

[two.dogs]

Sansui is infamous for making running changes that aren't in the service manual.

This has bitten me too. I generally expect to make more than one parts order to get the one's that aren't in the manual and that can't be seen before disassembly. I've got one of these receivers in the que, so I appreciate the time you spent to create an post this list. I'm not an expert, but after recapping 5 receivers I check the low value caps on the most important boards to see if they are in the direct signal path. These might be good candidates for film caps instead of electrolytics. WIMA brand caps are tall instead of wide, so the lead spacing stays reasonable. Maybe some experts will weigh in on the following candidates.

F-2433 EQUALIZER CIRCUIT BOARD
F-2433 C1 519102 3.3 50V EC 647-UPW1H3R3MDD MKS2B043301H00KA00
F-2433 C2 510470 4.7 6.3V EC 647 - UPW1E4R7MDD MKS2B044701K00KC00

F-2434 TONE CONTROL CIRCUIT BOARD
F-2434 C11 519001 10 25V EC 647-UPW1H100MDD6 MKS2B051001N00MSSD
F-2434 C12 519001 10 25V EC 647-UPW1H100MDD6 same
F-2434 C29 519001 10 25V EC 647-UPW1H100MDD6 same
F-2434 C30 519001 10 25V EC 647-UPW1H100MDD6 same

 

[gorfmonger]

Did you make this list from the service manual or from the actual components on the boards? The only way to get a correct, accurate list is verifying what's actually on the boards. Sansui is infamous for making running changes that aren't in the service manual. Are those part numbers you list after the cap value?

- Pete

Pete,
I pulled all the cap values from the SM. Since I am new at this, I did not realize that it would not be accurate. Yes, those are the part numbers for the replacement that I got from the Mouser web site. Do you think I should just order some extra caps of various sizes just to keep in stock in case I run into some changes?

 

[gorfmonger]

This has bitten me too. I generally expect to make more than one parts order to get the one's that aren't in the manual and that can't be seen before disassembly. I've got one of these receivers in the que, so I appreciate the time you spent to create an post this list. I'm not an expert, but after recapping 5 receivers I check the low value caps on the most important boards to see if they are in the direct signal path. These might be good candidates for film caps instead of electrolytics. WIMA brand caps are tall instead of wide, so the lead spacing stays reasonable. Maybe some experts will weigh in on the following candidates.

F-2433 EQUALIZER CIRCUIT BOARD
F-2433 C1 519102 3.3 50V EC 647-UPW1H3R3MDD MKS2B043301H00KA00
F-2433 C2 510470 4.7 6.3V EC 647 - UPW1E4R7MDD MKS2B044701K00KC00

F-2434 TONE CONTROL CIRCUIT BOARD
F-2434 C11 519001 10 25V EC 647-UPW1H100MDD6 MKS2B051001N00MSSD
F-2434 C12 519001 10 25V EC 647-UPW1H100MDD6 same
F-2434 C29 519001 10 25V EC 647-UPW1H100MDD6 same
F-2434 C30 519001 10 25V EC 647-UPW1H100MDD6 same

Twodogs,

I am new at this so forgive me for any dumb questions. I am not familiar with WIMA caps. Is there a specific width cap I should looking for? Can you find them in the Mouser catalog? The low value caps that I found on the board I was going to replace with Panasonic stacked film. Hope this is the right thing to do.

Thanks
Todd

 

[two.dogs]

Todd,

You put together a good list for a new guy. I gave you the Mouser numbers in my previous post, so copy/paste into the Mouser search bar and you'll find them. The only 10uf Panasonic films in stock have a lead spacing of 22.5mm-27.5mm, so an inch wide. The WIMA caps are taller and narrower with a lead spacing of 5mm to better match the physical layout of your boards. Many, many AKers use WIMAs and they work great for audio applications. Don't let any of this keep you from ordering the 1uf Panasonic films on your list - these are small and fit just fine. I ordered a bag of 100 and use them all over the place.

Your list looks like what I would have made. Nichicon PW for larger caps is a good choice (though I have nothing against Panasonic or Elna or other good brands). You got bipolar caps where the manual calls for BPEC, so that's good. But there is a range of values from about .1-10uF where we can considering swapping the original electrolytics for films with better audio quality. I always scan the schematic to see where these size caps are located. Look at the caps I mentioned and they appear to be in the direct signal path. What's special about that range? Generally below .1uf we're dealing with mylar or ceramic caps that we can leave alone. Above 10uf its tough to find film caps that aren't huge and expensive, so were stuck with electrolytics.

 

[gorfmonger]

Two.Dogs,

Thanks for the great information. It will help me complete my list. I was wondering if you could recommend what type if filter cap I can use for the 881. (i.e. Nichicon upw, Panasonic FM) Other than the physical size and rating I don't know what to look for.

Thanks
Todd

 

[two.dogs]

Here is one of many threads that discuss cap selection.
http://www.audiokarma.org/forums/showthread.php?t=614157
Here is my Marantz 2245 thread with a filter cap discussion on pg 3.
http://www.audiokarma.org/forums/showthread.php?t=614005&page=3

Forgot to mention that tantalum caps can get noisy with age. I only see one of these - C601 on the tone board. ECQ-V1H104JL would be a good replacement. But the schematic shows that this cap is in the microphone circuit, so unless you like karaoke you might just leave it.

I see you are also working on a QX-9900 so you'll have quite a few components to replace. I've got two words -- Hakko 808. Got mine on the bay. About $100-175 is a good price.

 

[gorfmonger]

Two.Dogs,

How did you know I am a pro karaoke performer HA HA.
Got the Hakko it will save me some serious time. Thanks for the links. Now its time to get to work.

Todd

 

[two.dogs]

If those film caps are too pricey then Nichicon KL series would probably be a good choice for caps in the signal path. These are low leakage caps that will keep the noise floor low (still not as good as films though). Why not use KL series everywhere? Most caps in a receiver are for power smoothing and PW series are designed for that. Very few caps are in the signal path - some direct coupled designs have no caps in the path.

Feelings...nothing more than feelings...trying to forget my...

 

[gorfmonger]

Two.Dogs,

I will stick with the film caps since they will perform better. I just have to decide what to do about the large filter caps. i.e. buy the exact size for big dollars or get smaller size and use spacers or change the clamps. Ohhhh the decisions!!

Todd

 

[Girlinformme]

How did the recap go? Any chance you have a final parts list?