Re: Star wars sound problem

is the -12v and -5v!!!! rail ok
get a output from " eg a warkman" run a wire from the the gnd and left across r27
then r28, if you hear
bad sound then you will know that it's in the amp some where. ( unpulg p7!!!) so
the game board dosn't interfear.
see how the goes

>I have a working ARII that works just fine in the game so its definitely the
>I have a working ARII that works just fine in the game so its definitely the
>ARII board and not the game board. What I dont understand is why it is affecting

>the colors on the screen as well as the sound.
>Thanks,
>Dan Piraino
>
>Bret Pehrson wrote:
>
>> >From RGVAC (Russel Willoughby), regarding a Centipede sound problem:
>>
>> It's not uncommon for the TDA2002 amplifier on the Audio/Regulator II
>> board to fail. This would be the first thing I'd replace... and I'd
>> check any resistors/caps/etc. in the sound amp circuit while I had the
>> board out.
>>
>> I guess it's possible the problem could be on the game board, but I
>> doubt it. The board puts out unamplified audio, so it's basically
>> either present or not present. If the sound appears to be "correct",
>> but very quiet, I'd rule out the game board.
>>
>> --
>>
>> So I guess check/replace the TDA2002s.
>>
>> > -----Original Message-----
>> > From: owner-vectorlist@synthcom.com
>> > [mailto:owner-vectorlist@synthcom.com]On Behalf Of Daniel Piraino
>> > Sent: Saturday, July 7, 2001 11:46 AM
>> > To: vectorlist@synthcom.com
>> > Subject: Re: VECTOR: Star wars sound problem
>> >
>> >
>> > I unplugged the sound side of my ARII board and plugged the sound side of
>> > another board in and the sound was fine. Also the colors were
>> > present. Before I
>> > just got a weak green color. I had a ARII rebuilding kit from Bob
>> > Roberts so I
>> > rebuilt the board. When I put it in the game I still had the same
>> > problem as
>> > before. The only thing that didnt get changed were the resistors
>> > and diodes and
>> > two TDA2002A transistors. Does anyone have any idea what could be
>> > wrong. Still
>> > if I plug the other board in everything is good with the color and sound.
>> > Thanks,
>> > Dan Piraino
>> >
>> >
>> > Bret Pehrson wrote:
>> >
>> > > Clean/replace the volume pot (!)
>> > >
>> > > > -----Original Message-----
>> > > > From: owner-vectorlist@synthcom.com
>> > > > [mailto:owner-vectorlist@synthcom.com]On Behalf Of Daniel Piraino
>> > > > Sent: Thursday, July 5, 2001 4:01 PM
>> > > > To: vectorlist@synthcom.com
>> > > > Subject: VECTOR: Star wars sound problem
>> > > >
>> > > >
>> > > > My Star wars has a problem with the sound having alot of static.
>> > > > I checked the
>> > > > speakers and that not it. Some of the speech sounds muffled and a
>> > > > bit distorted.
>> > > > When you turn the volume pot there is alot of static generated
>> > > > also. And it sounds
>> > > > like only one speaker is putting out sound and its not the wiring
>> > > > or the speaker. I
>> > > > checked already. Have any ideas?
>> > > > Dan Piraino
>> > > >
>> > > >
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Received on Tue Jul 10 06:19:19 2001