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Re: Memory test program for +2

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Thanks Brian.

Mine's a grey +2.  I think I'll have to strip it down and check chip seating. The fan out issue you describe certainly rings true - I get differing problems depending on combinations of RAM Turbo and DivIDE.  It has been getting worse over time.  Would old capacitors contribute to this kind of problem?

-- Andrew
 
On Sunday, 29 April 2012 19:16:23 UTC+12, Brian Gaff  wrote:
> Is this the black or the grey +2?
> 
>  I'm not aware of a test in the grey one, but I believe there is one in the 
> black one accessed by holding some key combination down.
>  Anyone?
> 
> Incidentally the grey ones had a notoriously bad connection on the voltage 
> regulator as it was a push on type.
> This used to cause crashes when the machine was  vibrated.
>  Its also a very good idea in all Spectrums to open them and check any 
> socketted chips are inserted well, they tend to work out over time.
>  The Grey +2  also suffered from the  fan out issues of the 128k but not 
> quite as much so they could easily crash with addons  as the signals were 
> preytty low and noisy.
[snip]

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Thread

Memory test program for +2 lizardb0y <andrew.stephen@gmail.com> - 2012-04-28 18:48 -0700
  Re: Memory test program for +2 "Brian Gaff" <Briang1@blueyonder.co.uk> - 2012-04-29 08:16 +0100
    Re: Memory test program for +2 "Chris Young" <chris.usenet@mail-filter.com> - 2012-04-29 14:55 +0100
    Re: Memory test program for +2 lizardb0y <andrew.stephen@gmail.com> - 2012-04-29 12:27 -0700
  Re: Memory test program for +2 Matthew Westcott <gasman@raww.org> - 2012-04-29 12:44 +0100
    Re: Memory test program for +2 lizardb0y <andrew.stephen@gmail.com> - 2012-04-29 12:30 -0700
      Re: Memory test program for +2 Matthew Westcott <gasman@raww.org> - 2012-04-30 00:59 +0100
        Re: Memory test program for +2 lizardb0y <andrew.stephen@gmail.com> - 2012-04-30 03:48 -0700
          Re: Memory test program for +2 rogerjowett <rogerjowett@gmail.com> - 2012-05-17 09:48 -0700
    Re: Memory test program for +2 "Brian Gaff" <Briang1@blueyonder.co.uk> - 2012-04-30 07:53 +0100
      Re: Memory test program for +2 "Brian Gaff" <Briang1@blueyonder.co.uk> - 2012-04-30 07:57 +0100
  Re: Memory test program for +2 sam coupe <rogerjowett@gmail.com> - 2012-05-31 09:42 -0700

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