Re: Re: tech: Atari System 1 Indy Jones speech missing, music bad?

Yes, I think so too. And I think that the -5 comes from a regulator on
the daughtercard itself.

BTW, anybody have any links to Roadblaster PCB repairs? I still have a
few PCBs with screwy road, etc. Seems that there was some mod
recommended by Star*Tech.

TIA

Also, the TMS5220 requires -5V to work properly and the clock spans
from -5V to +5V I believe... so check that out.

-----Original Message-----
From: Jess Askey <jess@askey.org>
To: rasterlist@vectorlist.org
Sent: Thu, 12 Feb 2009 3:34 pm
Subject: Re: RASTER: Re: RASTER: tech: Atari System 1 Indy Jones speech
missing, music bad?

Also, the TMS5220 requires -5V to work properly and the clock spans
from -5V to +5V I believe... so check that out.

peter jones wrote:

-----Original Message-----
From: Joseph Magiera <joemagiera@ameritech.net>
To: rasterlist@vectorlist.org
Date: Thu, 12 Feb 2009 08:19:16 -0800 (PST)
Subject: RASTER: tech: Atari System 1 Indy Jones speech missing, music
bad?

Testing an Atari System 1 Indiana Jones And The Temple Of Doom. Appears
to play ok, but in self test, the sound CPU is reported good, but on
the Speech Chip Test I get no speech. I tried it in MAME and there are
speech clips played. Any idea which chip on which board at what
location is bad? The other sounds appear to be fine.

The one other thing I notice is that in MAME, the music self test
appears to go much quicker and play more notes than my real game, so I
might have a bad music chip too. Can anyone

forget mame, it's not always acurate.
the speech is generated by a 28pin texas instruments TMS5220

2 things here.
1: indianna was the only sys1 game with speech, so if the boards were
originally something else it may be missing.
2: those chips have a nasty habbit of tarnishing and losing legs.
if you find it the legs will probably look black.
when you take it out of the socket, dont be surprised if you leave some
of the legs behind.

in these situations i like to replace the socket with a turned-pin type,
then clean the legs on the chip and fit it in a second turned pin
socket with small wires soldered between the socket & stubs where the
legs fell off.

then plug the 2 sockets together.

others probably have there own methods - this problem is common in
starwars boardsets.

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