Low rumbling noise when SX-1050 first powered on

I have not gone over it to see if the all the parts are in stock. But even if some specific parts are not in stock, you can find alternates. Nichicon UKL series come in 85C,105C,10%,20%, all are fine for this application.

For example, 4u7/25V, search by 647-UKL and filter by 4.7uF,25V, you get 3 possible choices

http://ca.mouser.com/Passive-Compon...hqw?P=1z0wrjcZ1z0x758&Keyword=647-UKL&FS=True

I was thinking, while you are at it, do the same for the flat amp, even the tone amp since the front panel is all pulled apart. Basically all the same comps.
control amp
awg-041 c1 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awg-041 c2 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awg-041 c3 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awg-041 c4 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awg-041 c11 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c12 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c13 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c14 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c17 100 16 ach-312 x 100 35 647-UPW1V101MPD
awg-041 c18 100 16 ach-312 x 100 35 647-UPW1V101MPD
awg-041 c19 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c20 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c27 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c28 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c29 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c30 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c33 100 10 ach-312 x 100 35 647-UPW1V101MPD
awg-041 c34 100 10 ach-312 x 100 35 647-UPW1V101MPD
awg-041 c35 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c36 2.2 25 ceanl x 2.2 50 647-UKL1H2R2KDDANA
awg-041 c37 100 16 ach-311 x 100 35 647-UPW1V101MPD
awg-041 c38 100 16 ach-311 x 100 35 647-UPW1V101MPD
awg-041 c39 100 16 ach-311 x 100 35 647-UPW1V101MPD
awg-041 c40 100 16 ach-311 x 100 35 647-UPW1V101MPD
awg-041 c43 10 25 csza x 10 50 647-UKL1H100KDDANA
awg-041 c44 10 25 csza x 10 50 647-UKL1H100KDDANA
awg-041 q1 2sc1312 0 0 0 0 0 512-KSC1845FTA
awg-041 q2 2sc1312 0 0 0 0 0 512-KSC1845FTA
awg-041 q3 2sc1312 0 0 0 0 0 512-KSC1845FTA
awg-041 q4 2sc1312 0 0 0 0 0 512-KSC1845FTA


flat amp
awg-040 c1 1 25 csza x 1 50 647-UKL1H010KDDANAtd
awg-040 c2 1 25 csza x 1 50 647-UKL1H010KDDANAtd
awg-040 c3 1 25 csza x 1 50 647-UKL1H010KDDANAtd
awg-040 c4 1 25 csza x 1 50 647-UKL1H010KDDANAtd
awg-040 c5 4.7 25 ceanl x 4.7 25 647-UKL1E4R7KDDANA
awg-040 c6 4.7 25 ceanl x 4.7 25 647-UKL1E4R7KDDANA
awg-040 c7 220 35 cea x 220 35 647-UPW1V221MPD
awg-040 c8 220 35 cea x 220 35 647-UPW1V221MPD
awg-040 c13 2.2 25 csza x 2.2 50 647-UKL1H2R2KDDANA
awg-040 c14 2.2 25 csza x 2.2 50 647-UKL1H2R2KDDANA
awg-040 c15 100 10 ceanl x 100 10 647-UKL1A101KEDANA
awg-040 c16 100 10 ceanl x 100 10 647-UKL1A101KEDANA
awg-040 c23 100 10 ceanl x 100 10 647-UKL1A101KEDANA
awg-040 c24 100 10 ceanl x 100 10 647-UKL1A101KEDANA
awg-040 c25 220 35 cea x 220 35 647-UPW1V221MPD
awg-040 c26 220 35 cea x 220 35 647-UPW1V221MPD
awg-040 q1 2sc1775a 0 0 0 0 0 512-KSC1845FTA
awg-040 q2 2sc1775a 0 0 0 0 0 512-KSC1845FTA
awg-040 q3 2sa872a 0 0 0 0 0 512-KSA992FBU
awg-040 q4 2sa872a 0 0 0 0 0 512-KSA992FBU
awg-040 q5 2sk30aw 0 0 0 0 0 leave as is, or if dead, use 2sk117bl
awg-040 q6 2sk30aw 0 0 0 0 0 leave as is
awg-040 q7 2sa725 0 0 0 0 0 512-KSA992FBU
awg-040 q8 2sa725 0 0 0 0 0 512-KSA992FBU

filter amp
awm-089 c3 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awm-089 c6 10 25 csza x 10 50 647-UKL1H100KDDANA
awm-089 c9 4.7 25 csza x 4.7 25 647-UKL1E4R7KDDANA
awm-089 c12 10 25 csza x 10 50 647-UKL1H100KDDANA
awm-089 q1 2sc1313 0 0 0 0 0 512-KSC1845FTA
awm-089 q2 2sc1313 0 0 0 0 0 512-KSC1845FTA

Thanks very much. I'll dig into this and see what I can do.