Emax

Thanks for you support Ted!!, check my report:

Wayne:
Could you be more specific about the testing of the 5V
digital power ?, because last night i worked on the
machine, I check de purple, orange, etcetera.... +12`s
Volts +10\ufffds ,s volts , the yellow wire marks +4,92
volts,....... but i cannot locate the pin 3 of VR1 and
check +5Volts, there\ufffds a green wire with no power. I
made also some reseating...no success, I found 3 ICs
near the Eprom heated, so i suspect there`s something
wrong in that zone. Is some other thing to do?????

greetings
Ricardo

--- ted Summers <djtbs1@...> wrote:

> This is common in any device that has chips and is
> that old..... try  
> working on old pinballs / slot machines / videogames
> sometime ! :-)
> 
> I do not recommend shorting pins together.....
> 
> So, after removing power from emax,
> 
> 1) Attach anti-static wrist strap
> 2) put down anti-static material (packages that
> computer motherboards  
> come in have a silvery plastic bag, use this if
> available)
> 3)  remove the boards from emax (mark all connectors
> where they go)
> 4) Gently pry up chips a little bit on both ends
> with flat  
> screwdriver (like Wayne said-  you do not have to
> completely remove  
> the chip from the board)
> 5) Press Chips back down
> 6) put boards back in emax
> 
> TEST!!
> 
> Good Luck!
> 
> Ted
> 
> 
> On Apr 24, 2007, at 12:22 PM, RICARDO JUAREZ wrote:
> 
> > Ok, Wayne great!, looks fine:
> > I hope that the power supply will be the
> cause!!!!,
> > otherwise i\ufffdll try as you said with the IC\ufffds (the
> > reseat will be with the power supply ON ? i dont
> think
> > so......) , but before I will became rehearsing in
> an
> > acient mother board...i need a bit of luck.
> > Thanks for you unvaluable help,....I except to
> send
> > you good news!!!!....
> > Bye
> > Rick
> >
> > --- Wayne Griffin <ingsoc_1979@...> wrote:
> >
> > > This sounds like it could also be heat related.
> > >
> > > Emaxen are 20 years old now.
> > >
> > > If you know your soft/firmware are okay and your
> 5V
> > > is
> > > somewhat in spec then...
> > >
> > > CAREFULLY reseat every chip and every connection
> on
> > > your motherboard. This includes the big, fat
> one.
> > > This
> > > will take time. Control static electricity as
> much
> > > as
> > > possible, you absolutely don't want to pop your
> > > E-Chip
> > > or any of the custom PAL's.
> > >
> > > Practice this on something that you don't care
> about
> > > to get the hang of the way it feels when you
> slide
> > > the
> > > small flatblade screwdriver underneath and
> patiently
> > > pry them up. Think old 386 motherboards...
> > >
> > > It isn't even necessary to completely remove the
> > > chips
> > > from the sockets. Just merely move them around
> some.
> > >
> > > Take a sharpie marker and mark the orientation
> of
> > > any
> > > connectors you may remove. In fact, I reseat
> every
> > > connection on everything that comes through here
> > > when
> > > I get something. You are breaking up little
> > > oxidations
> > > and the like between the metals.
> > >
> > > This is very common on E-mu gear- EIII, EII,
> SP-12,
> > > SP1200...
> > >
> > > [w]
> > >
> > >
> > >
> __________________________________________________
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> > >
> > >
> > > Emax and Emax II User's Group Website
> > >
> > > http://www.silveriafamily.com
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> >
> > __________________________________________________
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> > 
> 
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 
> 
> Emax and Emax II User's Group Website
> 
> http://www.silveriafamily.com 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


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