Do any Polarises have unsocketed ICs?
2010-10-06 by Paul D. DeRocco
All the units I've looked at have sockets on the main board. Has anyone seen a unit that has ICs soldered to the board? -- Ciao, Paul D. DeRocco Paul mailto:pderocco@...
Thread
Do any Polarises have unsocketed ICs?
Re: [chromapolaris] Do any Polarises have unsocketed ICs?
2010-10-24 by David Clarke
> All the units I've looked at have sockets on the > main board. Has anyone seen > a unit that has ICs soldered to the board? Every Polaris I've ever seen has had socketed ICs (which I've always appreciated, from a repair perspective). David C.
RE: [chromapolaris] Do any Polarises have unsocketed ICs?
2010-10-25 by Paul D. DeRocco
> From: David Clarke > > Every Polaris I've ever seen has had socketed ICs (which I've always > appreciated, from a repair perspective). Great. A friend of mine has figured out a way to drastically reduce the noise in the Polaris, but it involves lifting some chip pins and connecting them in the air. He'll probably include a set of pre-wired chips in the kit when he finishes his new output board design, so that it won't require any soldering. -- Ciao, Paul D. DeRocco Paul mailto:pderocco@...
Re: Do any Polarises have unsocketed ICs?
2010-10-27 by picardjeanluc69
What noise? --- In chromapolaris@yahoogroups.com, "Paul D. DeRocco" <pderocco@...> wrote:
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> > > From: David Clarke > > > > Every Polaris I've ever seen has had socketed ICs (which I've always > > appreciated, from a repair perspective). > > Great. A friend of mine has figured out a way to drastically reduce the > noise in the Polaris, but it involves lifting some chip pins and connecting > them in the air. He'll probably include a set of pre-wired chips in the kit > when he finishes his new output board design, so that it won't require any > soldering. > > -- > > Ciao, Paul D. DeRocco > Paul mailto:pderocco@... >
Re: Do any Polarises have unsocketed ICs?
2012-08-29 by wjmwpg
I've been searching the list-posts to see if this output board ever came to fruition but haven't found anything . . . did this ever happen? Alternatively, are there other suggestions to mod the output board besides dropping a TL074 in place of the LM348? Cheers, James --- In chromapolaris@yahoogroups.com, "Paul D. DeRocco" <pderocco@...> wrote:
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> > > From: David Clarke > > > > Every Polaris I've ever seen has had socketed ICs (which I've always > > appreciated, from a repair perspective). > > Great. A friend of mine has figured out a way to drastically reduce the > noise in the Polaris, but it involves lifting some chip pins and connecting > them in the air. He'll probably include a set of pre-wired chips in the kit > when he finishes his new output board design, so that it won't require any > soldering. > > -- > > Ciao, Paul D. DeRocco > Paul mailto:pderocco@... >
RE: [chromapolaris] Re: Do any Polarises have unsocketed ICs?
2012-08-29 by Paul D. DeRocco
> From: wjmwpg > > I've been searching the list-posts to see if this output > board ever came to fruition but haven't found anything . . . > did this ever happen? My friend has built one replacement output board, and it works nicely, but hasn't done a production run yet. I'll try to light a fire under him. I have four Polarises that would make nice homes for his boards. > Alternatively, are there other suggestions to mod the output > board besides dropping a TL074 in place of the LM348? That probably wouldn't make a whole lot of difference. The real problems are computer noise on the grounds and power supplies, digital noise coming in through the error squawk line, and pseudo-random noise coupling from the digital noise generator line into the output summing busses. -- Ciao, Paul D. DeRocco Paul mailto:pderocco@...
Re: [chromapolaris] Re: Do any Polarises have unsocketed ICs?
2012-09-02 by james meagher
On Wed, Aug 29, 2012 at 2:31 PM, Paul D. DeRocco <pderocco@...> wrote
> From: wjmwpg
> I've been searching the list-posts to see if this outputMy friend has built one replacement output board, and it works nicely, but
> board ever came to fruition but haven't found anything . . .
> did this ever happen?
hasn't done a production run yet. I'll try to light a fire under him. I have
four Polarises that would make nice homes for his boards.That probably wouldn't make a whole lot of difference. The real problems are
> Alternatively, are there other suggestions to mod the output
> board besides dropping a TL074 in place of the LM348?
computer noise on the grounds and power supplies, digital noise coming in
through the error squawk line, and pseudo-random noise coupling from the
digital noise generator line into the output summing busses.Paul mailto:pderocco@....com
--
Ciao, Paul D. DeRocco
Thanks for that info.
I'd be happy with a schematic and parts list (hand drawn on a cocktail napkin?). I've never built anything before where I had to source/make my own PCB, but beyond that I'm sure I could cobble it together . . . and I'm sure the good folks of this group could give me some suggestions how to go about creating the board itself.
Cheers,
James
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