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Sansui 6060 Phono EQ board repair

T

tweedsmith

New Member
I’m trying to recreate the EQ/Phono board work done on Ed’s Sansui repair. I wonder if you folks could vet my parts list, and answer a few questions. I'll come back and clean this up if the formatting is fudged when I post.

Here’s the list I made based off of Ed’s restoration page and a few AK posts:

Value Location Type Qant Recommendation

1uF/50V C13,C14 Stacked film 2 Ed's

3.3uF/35V C01,C02,C602 Elna Silmic II 3 Ed's --- (audio path) Is there a better replacement? Nichicon 50V is in my Mouser cart.

100uF/6.3V C606,C11,C12 Electolytic 3 Ed's

.22uF/50V C607 Stacked film 1 Ed's --- 63V OK?

220uF/50V C601 Electolytic 1 Ed's

KSC1845FTA TR03,04,601,602 4 https://audiokarma.org/forums/index.php?threads/sansui-6060-right-channel-phono-stage-issue.809578/

332kohm 1/2w R15/R16 na 2
https://audiokarma.org/forums/index.php?threads/sansui-5050-recap-component-question.986982/ Leestereo's post #7





Mouser Cart:


505-MKS2B041001C00KS

MKS2B041001C00KSSD

WIMA

Film Capacitors 1uF 50 Volts 10%

10

https://www.mouser.com/ProductDetail/505-MKS2B041001C00KS


647-UFG1H3R3MDM

UFG1H3R3MDM

Nichicon

Aluminum Electrolytic Capacitors - Radial Leaded 50volts 3.3uF 85c 5x11 2LS

10

https://www.mouser.com/ProductDetail/647-UFG1H3R3MDM


667-ECE-A0JKA101B

ECE-A0JKA101B

Panasonic

Aluminum Electrolytic Capacitors - Radial Leaded 6.3VDC 100uF SU POLAR

10

https://www.mouser.com/ProductDetail/667-ECE-A0JKA101B


594-2222-367-16224

BFC236716224

Vishay

Film Capacitors .22uF 5% 63volts

3

https://www.mouser.com/ProductDetail/594-2222-367-16224

667-EEU-FS1H221LB

EEU-FS1H221LB

Panasonic

Aluminum Electrolytic Capacitors - Radial Leaded 50VDC 220uF 9000H 8x20mm

5

https://www.mouser.com/ProductDetail/667-EEU-FS1H221LB


512-KSC1845FTA

KSC1845FTA

onsemi

Bipolar Transistors - BJT NPN Epitaxial Sil

12

https://www.mouser.com/ProductDetail/512-KSC1845FTA


594-SFR16S0003323FR5

SFR16S0003323FR500

Vishay

Metal Film Resistors - Through Hole 1/2watt 332Kohms 1%

8

https://www.mouser.com/ProductDetail/594-SFR16S0003323FR5


Questions:

I’m not able to figure out what Caps are referenced in Ed’s post: “There was a pair of tantalum caps on this board which was also replaced with Panasonic FC electrolytic. “ did I already address this with the parts above?

Out of curiosity, what are the clear looking capacitors (C05 C06 C07 C08) called, and what is their function in the circuit? They are listed as “P.C.” in the parts list.

Is it ok to go from 50V to 63V for C607? That’s the closest value I could find.

And…Probably a whole discussion to itself. The Elna Silmic II are recommended, but I only see 100V on Mouser. Is it recommended to track the exact replacement down somewhere else, or is there a suitable replacement available there (just wanting to consolidate orders).

Is what I have ok - nichicon MUSE series https://www.mouser.com/ProductDetail/647-UFG1H3R3MDM

IMG_7393.JPG
 
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@tweedsmith: signal path capacitors are best replaced with stacked film types if <4.7uF or bi-polar electrolytic types if >4.7uF. The input capacitors C01, C02 can be replaced with 1uF/50V or 63V WIMA types; the stock capacitors are tantalum types in your picture of the 6060 phono stage. The C11, C12 capacitors are emitter by-passes and can be replaced with Low Leakage types (e.g., Nichicon KL) or Audio Grade types; the replacement should also be increased to 220uF to extend its function down to ~20Hz. Also, avoid using capacitors rated at very low voltages, e.g., 6.3VDC or 10VDC; the capacitors rated for higher voltages perform better and are longer lasting.
 
Leestereo said:
@tweedsmith: signal path capacitors are best replaced with stacked film types if <4.7uF or bi-polar electrolytic types if >4.7uF. The input capacitors C01, C02 can be replaced with 1uF/50V or 63V WIMA types; the stock capacitors are tantalum types in your picture of the 6060 phono stage. The C11, C12 capacitors are emitter by-passes and can be replaced with Low Leakage types (e.g., Nichicon KL) or Audio Grade types; the replacement should also be increased to 220uF to extend its function down to ~20Hz. Also, avoid using capacitors rated at very low voltages, e.g., 6.3VDC or 10VDC; the capacitors rated for higher voltages perform better and are longer lasting.
Click to expand...
Great info! I'm going to review my parts order with these recommendations in mind.
 
Also, C05 C06 C07 C08 are the RIAA equalization network capacitors. While you're at it, for tighter RIAA accuracy you could replace with C0G/NP0 1% tolerance ceramics. You could also replace R15, R16, R17, R18 with 1% metal film. The new caps should be way smaller than those polystyrenes.
 
Leestereo said:
@tweedsmith: signal path capacitors are best replaced with stacked film types if <4.7uF or bi-polar electrolytic types if >4.7uF. The input capacitors C01, C02 can be replaced with 1uF/50V or 63V WIMA types; the stock capacitors are tantalum types in your picture of the 6060 phono stage. The C11, C12 capacitors are emitter by-passes and can be replaced with Low Leakage types (e.g., Nichicon KL) or Audio Grade types; the replacement should also be increased to 220uF to extend its function down to ~20Hz. Also, avoid using capacitors rated at very low voltages, e.g., 6.3VDC or 10VDC; the capacitors rated for higher voltages perform better and are longer lasting.
Click to expand...

I appreciate that you take the time to explain current functions and reasons for changes in your posts, I've learned a lot reading your many rebuilds.
5050/7070/BA-2000/AU-717 all in different stages of repair/upgrade and every minute enjoyable with AK as my guide.
 
Leestereo said:
@tweedsmith: signal path capacitors are best replaced with stacked film types if <4.7uF or bi-polar electrolytic types if >4.7uF. The input capacitors C01, C02 can be replaced with 1uF/50V or 63V WIMA types; the stock capacitors are tantalum types in your picture of the 6060 phono stage. The C11, C12 capacitors are emitter by-passes and can be replaced with Low Leakage types (e.g., Nichicon KL) or Audio Grade types; the replacement should also be increased to 220uF to extend its function down to ~20Hz. Also, avoid using capacitors rated at very low voltages, e.g., 6.3VDC or 10VDC; the capacitors rated for higher voltages perform better and are longer lasting.
Click to expand...
Finally getting around to this work, but hit an odd snag.
I'm having trouble that actually carries over from my work on the amplifier board. I am unable to find 220uf/50v caps that are small enough to practivally fit here. I have twice ordered the same Nichicon caps from digikey- that i only realized when they arrived are far too large at around 16mm. 6mm would be just right.
Would this be a good replacement: https://www.digikey.com/en/products/detail/nichicon/UKA1H221MPD1TD/2787032
or is there another preferred product?
 
Leestereo said:
@tweedsmith: signal path capacitors are best replaced with stacked film types if <4.7uF or bi-polar electrolytic types if >4.7uF. The input capacitors C01, C02 can be replaced with 1uF/50V or 63V WIMA types; the stock capacitors are tantalum types in your picture of the 6060 phono stage. The C11, C12 capacitors are emitter by-passes and can be replaced with Low Leakage types (e.g., Nichicon KL) or Audio Grade types; the replacement should also be increased to 220uF to extend its function down to ~20Hz. Also, avoid using capacitors rated at very low voltages, e.g., 6.3VDC or 10VDC; the capacitors rated for higher voltages perform better and are longer lasting.
Click to expand...
Hey there - I noticed here that you recommend replacing C1 & C2 with 1uf/50v. Wanted to make sure this is correct in my case having 3.3uf/35v tantalums in both of these positions. Just wanted to clarify - thank you!
 
AndyCares said:
Hey there - I noticed here that you recommend replacing C1 & C2 with 1uf/50v. Wanted to make sure this is correct in my case having 3.3uf/35v tantalums in both of these positions. Just wanted to clarify - thank you!
Click to expand...
Yes, that is correct; the 1uF film capacitors afford a low enough high-pass filter F3 ( ~3 Hz) for the phono stage.
 
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