On 2023/01/26 10:03 a.m., MySeeburg wrote:
> On Monday, January 23, 2023 at 1:41:49 PM UTC-6, John Robertson wrote:
>> On 2023/01/22 2:34 p.m., MySeeburg wrote:
>>> I am getting no sound during game play. I don't have a manual yet (ordering one tomorrow) but I don't think it will do me much good in this case. I have switch 25 on the cpu in the on position. The attract mode sounds nice and clear and plays every 5 minutes. All the 7400, 7404's and the 7432 above the switches have been replaced sometime before I got the game. Any other ideas out there?
>> The sounds are enabled by the Lamp/Solenoid driver board. The schematics
>> will show the driver IC - a 7404 as I recall - so check it. The sound
>> control lines are S1, S2, S4, and S8...
>> John :-#)#
> Well, I thought one of the replaced 7404's would be dead and the first one I pulled was dead. All I have around is 74LS04's and they must not work right for that spot. I pulled a couple other ic's near the dead one and they all passed. Looking around I found a salvage one that tested good, but like an idiot I put it in upside down and caused a crapload of problems. I gave up on that CPU alltogether. Put in one I fixed years ago and problem solved! All I need to do John is buy that NOS backglass you have stached in back and I'll have a nice game I won't want to sell. I do actually like this game. Steve at Pinball Resources told me most of them got exported to France. He told me I was very lucky to find this as a barn find for $300 bucks. He asked me if I was wearing a mask when I bought it, lol.
You probably can get away with using 74LS04 for the sound drivers - as
LS series can drive one or two conventional TTL gates and there is only
one gate for each sound to be driven on the sound board...
As for the Panthera b/g, I wish I had a NOS one, as I'd use it in my
Panthera game that came in recently with a 6 - 7 level backglass.