Quoting Leszek Chmielewski retr...@gmail.com:
My SAM has no BRIGHT too. There was a shortcut between Composite and +12V,
so the MC1377P was burned out (Just got a replacement by desoldering a Atari
Mega STE), I lost BRIGHT too as the ASIC was toasted a little too. After
replacing it with ASIC
- Original Message -
From: Leszek Chmielewski
To: sam-users@nvg.ntnu.no
Sent: Tuesday, October 04, 2011 11:11 AM
Subject: Re: Resistor R55
My SAM has no BRIGHT too. There was a shortcut between Composite and +12V, so
the MC1377P was burned out (Just got a replacement
:
- Original Message -
From: Leszek Chmielewski
To: sam-users@nvg.ntnu.no
Sent: Tuesday, October 04, 2011 11:11 AM
Subject: Re: Resistor R55
My SAM has no BRIGHT too. There was a shortcut between Composite
and +12V, so the MC1377P was burned out (Just got a replacement by
desoldering
Hopefully we understand the behaviour of the current ASIC well enough for
someone to create a replacement, or (as you're suggesting) and enhanced version
that is backwards compatible. It's not a small task though!
I have a bunch of test programs that Dave and I wrote for SimCoupe, which
development is very fast (some days/one week), and next time will used for
fixing bugs...
VELESOFT
- Original Message -
To: sam-users@nvg.ntnu.no; VELESOFT
Sent: Saturday, October 08, 2011 5:14 PM
Subject: Re: Resistor R55
Look forward to seeing more on this.
What status are you
On 03/10/11 23:40, Andrew Collier wrote:
On 3 Oct 2011, at 16:22, Thomas Harte wrote:
It looks like a previous owner of my current SAM has had occasion
to replace resistor R55, or at least, to solder an additional copy
of R55 on top of the existing one. See
http://postimage.org/image/1g4kbz490
2011/10/4 nev young pasiphae1...@yahoo.co.uk
On 03/10/11 23:40, Andrew Collier wrote:
On 3 Oct 2011, at 16:22, Thomas Harte wrote:
It looks like a previous owner of my current SAM has had occasion
to replace resistor R55, or at least, to solder an additional copy
of R55 on top
had occasion
to replace resistor R55, or at least, to solder an additional copy
of R55 on top of the existing one. See
http://postimage.org/image/1g4kbz490/
Immediate follow-on questions, mostly resulting from me being an
electrical dunce, are: what does R55 do, what would be the likely
effect
, Thomas Harte wrote:
It looks like a previous owner of my current SAM has had occasion
to replace resistor R55, or at least, to solder an additional copy
of R55 on top of the existing one. See
http://postimage.org/image/1g4kbz490/
Immediate follow-on questions, mostly resulting from me being
like a previous owner of my current SAM has had occasion to
replace resistor R55, or at least, to solder an additional copy of R55
on top of the existing one. See http://postimage.org/image/1g4kbz490/
Immediate follow-on questions, mostly resulting from me being an
electrical dunce, are: what does
If the original R55 has blown, i.e no current is able to pass through
it, then the piggy backed R55 will restore the circuit as intended.
If the piggy-backed one has blown as well I'd be concerned as to what
is causing this to happen!
Thomas Harte wrote:
It looks like a previous owner of my current SAM has had occasion to
replace resistor R55, or at least, to solder an additional copy of R55
on top of the existing one. See http://postimage.org/image/1g4kbz490/
That's something I've seen on a lot of SAM motherboards
On 3 Oct 2011, at 16:22, Thomas Harte wrote:
It looks like a previous owner of my current SAM has had occasion to
replace resistor R55, or at least, to solder an additional copy of R55
on top of the existing one. See http://postimage.org/image/1g4kbz490/
Immediate follow-on questions
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