Vintage Synth Repair

Hmm.. looks like I need to learn more about NP caps oppose to 
polarized. I assumed the symbol on the board would indicate some sort of
 polarization. Sorry for my ignorance in this area, i am learning. The 
old ones I am replacing look like electrolytic's but as I said they 
don't have any obvious polarity markings. They are from one of the 6 
channels on a JX-3P (...yes.. I am still working on this..!!). I am 
however learning a lot in the process - my diy audio probe is working 
wonders thus far allowing me to home in on the problematic areas.

Thanks for your time in answering my question guys I really appreciate it - just one more question - can I use the polarized electrolytic's that I have ordered in place of these, what would now appear to be, NP caps? Or maybe someone could direct me to some literature on this specific subject.

Nick


________________________________
 From: Tom Russell <russelltc@...>
To: vintagesynthrepair@yahoogroups.com 
Sent: Monday, 25 February 2013, 18:56
Subject: Re: [vintagesynthrepair] Dumb question, but this is driving me nuts... > Older Cap Polarity
 

  
Nick-
I believe it's just a symbol to indicate an electrolytic. I don't think the direction of the lines implies anything beyond artistic license. If the polarity isn't marked it's probably safe to assume that it's non-polarized. You can check to see if one lead or another is tied to a ground trace (but if it's a filter cap on a negative voltage supply, the (+) side is at ground.)


--- On Mon, 2/25/13, Nick Bell <mckenzie126@...> wrote:


>From: Nick Bell <mckenzie126@...>
>Subject: [vintagesynthrepair] Dumb question, but this is driving me nuts... > Older Cap Polarity [1 Attachment]
>To: "vintagesynthrepair@yahoogroups.com" <vintagesynthrepair@yahoogroups.com>
>Date: Monday, February 25,
 2013, 12:32 PM
>
>
>  
>This is def going to seem a bit of a dumb question but I am just trying to identify the polarity of some old electrolytic caps I am replacing. The old ones don't have any markings, they just have most of the writing on one side. On the board the symbol is marked as per my attachment but without the + & - that I have added.
>
>
>Can someone tell me please if I am correct with my polarity markings or not! Internet image search for old cap symbols just comes up with something similar but the slope of the lines in the middle go the other way (they go up from left to right instead & indicate + on the right). Confused!
>
>
>Thanks 
>
>Nick
>