Re: Star Castle Signature analysis

Yes I am using the Cinematronics version. I have an external power supply,
however it is supplying both the board, and exerciser.

I've gone through and cleaned the ic clips, and the legs on the ics. Haven't
checked wiring from the exerciser but it looks solid enough.

Just odd that I should have to run the voltage up that much to even get the
gate to start toggling. Signatures so far have looked good, up until I hit
the arithmetic section, it's completely unstable. L4 the ls182 pin 9 the not
carry is unstable, as is the ls181's. I'm checking the sockets on those now.
Will wind up replacing them with dual wipes.

But that's were I am so far.

On Mon, May 17, 2010 at 4:38 PM, Matthew Rossiter <matt@rossiters.com>wrote:

> Are you using the Cinematronics Exerciser or the Kurz Kasch version?
> If the Exerciser is plugged in, then you will definitely get the Red LED.
> In normal operating mode, the LED should turn off.
> I get the most stable signatures if I don't use the Exerciser to power the
> board. I prefer using an external switching power supply with no other
> power source. At least for the Kurz Kasch version.
>
> Make sure the IC clips are making good contact with the IC pins and make
> sure there's no flakey wires between the Exerciser and the the clips.
>
> Matt
>
>
>
>
> On 5/17/2010 7:44 AM, Kevin Moore wrote:
>
> Might help if I was reading pin 12 on C8. Anyways, it reads correctly. But
> the voltage thing still bugs me.
>
> I shouldn't have to go above 5.1v should I?
>
> Kevin
>
>
> On Mon, May 17, 2010 at 7:38 AM, Kevin Moore <talon.k@gmail.com> wrote:
>
>> Ok here's the quick of it.
>>
>> I've got a Cinematronics Exerciser, and HP5004 I'm used to doing sigs on
>> Asteroids and the like.
>>
>> But Cinematronics boards are new to me, as is the whole signature stuff.
>>
>> The board has solid LED, will not play blind.
>>
>> Hook it up on the bench, hook the exerciser up, and start trying to do
>> analysis.
>>
>> Having a bit of a problem.
>>
>> First problem, is unstable sigs until the voltage is cranked up to 5.25v
>>
>> Next problem is initial check on C8 pin 12 gives 665F pin 5, and 6 give
>> the expected C32P
>>
>> But I shouldn't have to crank they voltage that high to get things to run
>> in the first place should I?
>>
>> Also I'm not sure what I should be seeing as far as the LED with the
>> exerciser hooked up, should the led be solid, go out or blinking? I know
>> when the game is running it should come on for a few seconds, then go out.
>> But since I obviously have a problem with the board it doesn't. Of course
>> adjusting the +5 will result in a LED t hat blinks.
>>
>> Do anyone have any insights they can impart to me :)
>>
>> Thanks,
>>
>> Kevin
>>
>>
>>
>>
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Received on Mon May 17 17:51:33 2010