So, lacking an stock polysix to measure, I disconnected the components that I added and then i re-measured the synth's temperature. Unfortunately, this excludes the heating due to the stock Polysix's 8049 microprocessor because it has been removed from my system. The result, though, is that de-modified Polysix reaches 136 F (58C) and my modified Polysix reaches 148F (63C). You can see graphs and details here:
http://synthhacker.blogspot.com/2013/07/polysix-temperature-without-mods.htmlEstimating the power draw from the 8049 and adding it the heating contribution of that power draw, I estimate that a stock Polysix reaches about 140F (60C). Compare this to my modified synth (148F). Is the temperature of my modified synth a problem? Probably not. But, I probably shouldn't go adding more stuff to it. If I do, I ought to consider adding my own power supply.
Chip
--- In PolySix@yahoogroups.com, "chipaudette" <chipaudette@...> wrote:
>
> Hi All,
>
> As you may remember, I've been doing a lot of mods to my Polysix. After focusing on having fun playing the thing for the last month or two, I'm noticing that the Polysix seems to get quite hot on the back panel. Because I've added two new microcontrollers (plus associated components) and powering them all off the Polysix's built-in power supply I'm worried that maybe the extra heat is my fault.
>
> I've done measurements of my modded Polysix. The thermal bus bar on the Polysix power supply is running about 140F (60C). You can see details here:
>
> http://synthhacker.blogspot.com/2013/07/polysix-temperature.html
>
> In searching the archives here, I found that others have mentioned that the Polysix gets hot (http://launch.groups.yahoo.com/group/PolySix/message/942) but nobody reported any measurements.
>
> Can anyone measure the temperature of their Polysix and tell me how hot she gets? If mine is hot, but normal, I may proceed with even more power-drawing modifications. If mine is hot and abnormal, I won't.
>
> Thanks for any help you can give...
>
> Chip
>