Re: Star Wars audio/regulator help

I had a SW audio Reg board with -12 on the -5 line. Changed the reg and solved the problem. I had a few lying around that were pulls from trashed AR
boards and half were bad. I believe when they short they dump -12 straight through and fry stuff on the main board. I'd try a couple more new ones as
the -5 should be dead on more or less.

Dan

On Fri, 28 Dec 2001 23:02:30 -0600, you wrote:

>6.5 isn't unheard of for a 7905. It almost sounds like you receive 7912s from
>Bob. Check the numbers..
>
>A 7905 you should be able to pickup at Rad Shack (i think they had them). I would
>recommend replacing it..
>
>If you need to test your Star Wars board, you could probably borrow the -5 off a
>JAMMA power supply if you have one lying around.
>
>JB
>
>SVerlander@aol.com wrote:
>
>> Hello everyone, well here I go again. Yesterday I installed a Bob Roberts
>> Atari Regulator/Audio 2 rebuild kit in my Star Wars board. I also put a new
>> +5V regulator (Q1-LM305) as the +5volts was shot and out putting over 10
>> volts. Today I tested it in the game with no other boards connected to check
>> for all the correct voltages and this is what I got,+ 5.00V, 12.93 at the
>> 10.3 Vdc unregulated, +23.65v , -23.65, 11.94 at the + 12V Reg, - 12v at the
>> - 5v reg. :-O
>> Well, I think everything looks with in specs except the - 5v reg. I put my
>> other Reg/Aud board in (has not been rebuilt) and I get all the correct
>> voltages including - 4.99 at the - 5v reg so this tells me the problem must
>> be on the other board. Could the new - 5v reg(7905) in the kit be bad? I had
>> ordered 2 kits from Bob so I installed the - 5v reg from the other kit and
>> still get - 12 volts :-o, could both the regulators in the kits be bad? Well,
>> I installed the old - 5v reg that came off this board as I do believe the -
>> 5volts was working before I installed the kit. Now I am getting - 6.5 volts
>> out of the -5v reg, is this OK? I don't believe my luck, can the 2 new
>> regulators have been bad? I just got my new Star Wars board set in the mail
>> today and it is supposed to be tested and 100% working. I don't want to try
>> it until I get the power supply working 100%. I believe that's what may have
>> happened to the board set that was in the game when I got it. All the LED's
>> stay on and it does nothing. Don't want to mess up this board. I will try to
>> find a new 7905 - 5volt regulator tomorrow but doubt my local supply store
>> will have them, if they do it will shock me. Thanks again in advance for any
>> opinions and suggestions.
>> Thanks,
>> Sam
>> ---------------------------------------------------------------------------
>> ** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
>> ** message body to vectorlist-request@synthcom.com. Please direct other
>> ** questions, comments, or problems to neil@synthcom.com.
>
>---------------------------------------------------------------------------
>** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
>** message body to vectorlist-request@synthcom.com. Please direct other
>** questions, comments, or problems to neil@synthcom.com.

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Fri Dec 28 22:18:15 2001