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Recapping ATARI 520STFM (C070789-001 REV. F)

Posted: 17 Jan 2020 00:29
by sonicthewedge
I am trying to recap an ATARI 520STFM (C070789-001 REV. F) but I am having problems identifying the ratings for capacitors: C7, C11 and C215. Two are not marked at all and one is illegible. Images of locations attached.

Can anyone help me determine the ratings for these capacitors?

This is the nearest schematic I have but it does not correlate with the actual board pretty much at all (unless I am interpreting it incorrectly): https://dev-docs.exxosforum.co.uk/1040ST ... 6-1987.pdf

These are the other capacitors that I have inspected on the board and identified:

ID, Voltage, Capacitance, Polarisation, Orientation
V, (F / uF / pF), (P / NP), (R / A)
-------------------------------------------------------------

c149, 16V, 4700uF, P, A
c2, 16V, 22uF, P, A
c9, 16V, 47uF, P, A
c12, 16V, 47uF, P, A
c49, 16V, 1000uF, P, A
c92, 16V, 100uF, P, R
c148, 16V, 100uF, P, R
c223, 16V, 470uF, P, R
c220, 16V, 100uF, P, R
c22, 16V, 100uF, P, R
c219, 16V, 33uF, P, R
c216, 16V, 10uF, P, R
c217, 16V, 10uF, P, R
c218, 16V, 10uF, P, R
c221, 16V, 100uF, P, R
c70, 16V, 100uF, P, A
c73, 16V, 100uF, P, A
c74, 35V, 4.7uF, NP, A
c75, 35V, 4.7uF, P, A

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Re: Recapping ATARI 520STFM (C070789-001 REV. F)

Posted: 17 Jan 2020 11:44
by exxos
C215 - 1uF 50V.
C7 - 22UF 16V.
C11 - 100UF 16V.

Re: Recapping ATARI 520STFM (C070789-001 REV. F)

Posted: 20 Jan 2020 11:48
by sonicthewedge
Absolutely brilliant - thank you!