Re: TEMPEST sound problem only in attrack mode

From: Andrew Welburn <andy_at_andysarcade.net>
Date: Thu Apr 07 2011 - 03:49:15 EDT

White noise sounds like a bad pokey...

Can't say why free play would affect deflection, but start with replacing the right pokey and go from there.

Andrew Welburn (mobile)
www.andys-arcade.com

On 7 Apr 2011, at 08:09, "vernimark" <vernimark@vernimark.com> wrote:

>
>
> Hi All,
>
> a friend of mihe has a tempest. Everything seems to run in the right way, test passed, board in good condition; but pcb has 2 problems:
>
>
>
> 1)in attract mode there is a strong white noise. During the game and during tests is ok.
>
>
>
> 2) setting FREE PLAY video is reduced to a horizontal line (no vertical deflection).
>
>
>
> Any idea?
>
>
>
> Thank you,
>
> vernimark
>
>
>
>
> Marco M. Vernillo
> R&D Director
> Prisma Engineering
> Via Guido Rossa, 12 - Anzola dell'Emilia (Bologna)
> Tel: +39.051.6502.511
>
> Fax: +39.051.6502.512
>
> Mob: +39.346.5027.658
>
> m.vernillo@prismaeng.it
>
>

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Received on Thu Apr 7 03:48:52 2011

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