I use the HM6514 all the time for repairs and new boards alike. They
are $3 ea from Jameco.
However, if the programming controls 'lock up' it still sounds like the
CPU (IC22) is crashing due to either a bad connection or the part itself
is failing.
Crow
/**/
are $3 ea from Jameco.
However, if the programming controls 'lock up' it still sounds like the
CPU (IC22) is crashing due to either a bad connection or the part itself
is failing.
Crow
/**/
On Wed, 28 Jul 2004, toorglick wrote:
> When on, the 5514 gives me around 3.9 volts and off it reads about 1.9.
> Funny, though, that section looks clean and even the legs look good
> (shiny metal). I only did a quick test the other night and haven't
> removed 367 (again) to check for more continuity problems.
>
> I was looking for replacements online but I mostly got a lot of links to
> video-game repair. Here is a list of comparable replacements as far as
> I can determine:
>
> Toshiba 5514
> Harris HM6514, National 6514, Fujitsu 6514
> NEC 444, RCA 5114, Hitachi 4334
>
> Is it safe to assume any one of these can replace the 5514?
>
> The patch and bank section of the programming controls lock up on me
> so I'm not able to test whether I can load in data.
>
> Thanks.