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Technics SU-V85A CAP questions

E

EC1

Super Member
Try to work on a Technics SU-V85A main circuit board, can someone confirm or comment on my replacement parts? Thanks.

C503/C504/C505/C506 100uF/6.3V UPW 100uF/25V

C458/C460 1uF/50V FILM 1uF/63V

C463/C464 1uF/100V FILM 1uF/100V

C606 4.7uF/25V UPW (??) 4.7uF/50V
UKL (??) 4.7uF/50V

C607 47uF/6.3 UPW 47uF/25V

C609 330uF/6.3 UPW 330uF/25V

C707 3.3uF/25V UPW 3.3uF/50V

C611/C612 1uF/100V FILM 1uF/100V

C457/C459 1uF/50V FILM 1uF/63V


Document1.jpg Document2.jpg Document3.jpg
 
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Anyone? Are these Nichicon UPW proper type on this board? Cant really tell with my limited experiences. Thanks.
 
Looking at C606/607 location, having a smaller leakage will not make much difference. Using UPW will actually be better for endurance (temperature, ripple). Even C609 might not need to be UKL and UPW might be more beneficial. Don't think I will be able to hear the difference. Anything you throw in here will most probably better than the original. You might get more benefit by prioritizing lead spacing and voltage/temperature rating.
 
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I am not at the level can tell by looking at the schematic but will follow you guys advice, use UKL for C 503 - 506. Thx.
 
Slowly moving onto to “tone control circuit board”, here are the schematics from SM. TB1 and TB2 make the complete copy. TB_1 and TB_2 are the enlarged portion of TB1, not the greatest copy. Other than C311 and C312 are noted as NP (or BP), cant tell anything special, plan to use:

1. Nichicon UES for C311, C312
2. Film cap for 3.3 and lower if size fits
3. The rest will be UFG (or anything more proper?) please help.
4. Is there anyone need to low leak type here?

Thanks.

TB1.jpg TB1_1.jpg TB1_2.jpg TB2.jpg
 
EC1 said:
3. The rest will be UFG (or anything more proper?) please help.
4. Is there anyone need to low leak type here?
Click to expand...

Using UFG will be safe in here. We are now moving towards the topic of capacitor sound. There are many point of views. If you want to go down this rabbit hole, there is currently an active thread in another audio forum, just google “When not to use low leakage KL?”
 
Thx for the info.
No, I just want to make sure I use proper type/types; I don’t think I can hear the differences even I use the best ones.
 
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