You can replace with non-polar without any problem Regards Brian G3OYU From: vintagesynthrepair@yahoogroups.com [mailto:vintagesynthrepair@yahoogroups.com] On Behalf Of Gil Sent: 10 December 2012 1:13 To: vintagesynthrepair@yahoogroups.com Subject: [vintagesynthrepair] Don't know if the original caps were polar or bi-polar (E-II) I have a nice Emulator II which doesn't sample from the day I got it. You see no signal when playing into the input (using another synth, or an electric guitar). I decided to investigate this and found that what seems to be the sampling circuit, has two electrolyte caps, which on the schematics are marked as "alum-electro (nonpolar) 4.7uf" but on the actual board, regular POLAR caps are used. These caps I put myself when recapping the machine. I tend to think that this causes the sampling circuit not to work, BUT - a closer look at the board reveals a + sign near each of these two caps, as if the engineers did intend to use regular POLAR caps there... I'm afraid to replace them with non-polars so I don't damage the circuit ..... Any advice ? You can see the diagram at page 42 of the manual, here: http://www.synthesizerarchiv.de/circuits/emu/emulator2_circuits/emulator2_ci rcuits.pdf Thanks !
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RE: [vintagesynthrepair] Don't know if the original caps were polar or bi-polar (E-II)
2012-12-10 by Brian