Re: Tempest issue

For the self test switch. Put your meter on Ohms, if it has a continuity
test that's even better. Place one lead on the center (should be ground as
well) and the other lead on the top. close the switch and check to make sure
it get's continuity. Then do the same for the bottom (aka the momentary
position) If that checks out. Then check for continuity from the top of the
switch to R62 on the main board. To make sure there is not a problem in the
plug, or the edge connector. You can then close the switch and check for
continuity from the center to R62.

Another quick test is to clip a lead from a ground lug, to R62 and see if it
goes into test mode. If not then you might have a problem with R9 74ls244
provided the slam switch, and the coin switches work. If those don't work
you might have a problem with 3Khz clock, or the /sinp which is doubtful.

As for the player 1 button not working. Again do continuity checks of the
switch, then to R64 of the aux board.
Could also be a bad pokey @ C/D2 try swapping it with B/C2 if memory serves
that line on B/C2 is not used.

Both problems can be caused by the molex plug going from the door to the
game harness, and the CP to game harness.

As for no blue. That could be a bad Q4 on the game board. You'll need to
measure the voltage on the emitter to ground. If you are getting voltage out
that is comparable with Q2, and Q3 then I would suspect a wiring problem to
the monitor, or the Blue drive on the monitor is not working.

I know you cleaned the interconnects, but did you also re-solder the header
pins. That's the #1 problem with these boards.

Kevin

On Mon, Jan 24, 2011 at 11:58 PM, brett Jacquot <arcadehell1970@yahoo.com>wrote:

> good call, that fixed the level jumping. Still have no blue, player one
> button is non responsive, and test mode switch does nothing, before or after
> dip switch changed. Could be a bad button, but i am curious about another
> issue since test switch is also not working. thanks for the help thus far!
> Brett
>
> ------------------------------
> *From:* Rodger Boots <rlboots2@gmail.com>
> *To:* vectorlist@vectorlist.org
> *Sent:* Tue, January 25, 2011 12:40:09 AM
> *Subject:* Re: VECTOR: Tempest issue
>
> This sounds like the demo mode that is selected by the DIP switch on the
> vector generator board at location N13. Switch 7 is probably off and switch
> 8 on to select free play mode. If switch 1 is on and 2 is off you get demo
> mode. Turn switch 2 on and you should be good.
>
>
>
> On Mon, Jan 24, 2011 at 8:15 PM, brett Jacquot <arcadehell1970@yahoo.com>wrote:
>
>> I finally got my tempest built, and it has issues. I bought it from a
>> friend, he had it 100% working, took all the guts out, started restoring the
>> cab, and lost interest and i purchased it. I put all guts to it, and fire it
>> up and here's what's happening.
>>
>>
>>
>> 1. No blue color in the monitor
>>
>> 2. both start buttons are flashing, only player 2 button is responsive.
>>
>> 3. Once i start a game, it warps in to the first level like normal, then
>> it acts like the round is cleared, and just warps to the next level, and
>> repeats over and over.
>>
>>
>>
>> I cleaned/reseated the edge connectors, and interconnect cables, and no
>> change. I suck at pulling and reseating chips, and i also suck at checking
>> voltages. I'm sure i probably should try those two first, but i just wanted
>> some opinions. thanks! Brett
>>
>>
>
>

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Received on Tue Jan 25 07:08:25 2011