you have switch matrix issues captain neo. Check your switch test. Also you may have a shorted cap on the slingshot switches. Seen those cause weird behavior when shorted or failing.
Trade you games! I hate sound problems now! lol

Awesome! i will see what I see and report back. Just got a RnB so looking that over . But now I'm back in...Thanks for sticking with me defog! I'll get you back....
Cheers

so tested both ic's with DMM and they test good. The 74hc74 at 3d was replaced before but pin checks out . Although the schematic is wrong. pins 5 and 4 on the 6e chip are reversed on the board. and therefore labeled wrong in the schematic. Pin 5 goes where pin 4 should and pin 4 goes where pin 5 should on chip 6E.
Not sure where to go from here. Might wait for my friend to come back from the pinball show on monday with a scope.
Thoughts? Might go work on my new rocky and bullwinkle to clear my head.......

so replace the 74hc74? Is that where we were at? My friend with the scope is quite busy..

oh yea...checked the switches and disconnected one at a time to see if diode weirdness was partially causing this...You just never know as this really a strange one. But no change. Finding a 74hc74 as we speak and a 74ls32 as well

yea ..thats true. Also risk board damage. But I will cut the rest of the ics off to minimize it. I have the 74ls32 but still need to find a 74hc74

ok ls32 socketed and done and drum roll please...........still the same. I need to find an hc74 now.

ok That was funny! Thanks man..I needed that..lol

replaced and socket stripped the 74hc74 and ......... still the same..still missing sounds. Although as always you can hear a faint sound being made like it is trying to play the sounds when it calls for them but nothing comes out. Well back to the ol' drawing board..

might have to find another data east game to help in fixing this

Thanks man... Yea this is a real spanker.

I think I am going to try the ls273 at 5E. It tests a little high at pins 5,6 which connect to the 5205 voice chip. The ls273 at 4E and on another board test at .551 not .661 at pins 5,6 so I may have found the fault. Or at least lets hope so. Off to get more chips..
Thoughts?

You got er captains! I will meter every resistor on the board right now. Also I will take note of any ceramic/tantalum/poly caps and replace them as you cannot really check them like resistors.
Thanks for sticking with me boys!

ok update! All these tests done with the board out of game with ground attached.

When I test RA2 the 10k x9 i get low readings on a couple pins...down to 8.3k and 1 a little high at 10.8k . After I remove the msm5205 it reads great at all pins at 10k except the one same pin which is the same at 10.8k.

Makes me think the 5205 or caps by the 5205 are dragging it down. Perhaps right above the 5205 c77 and c76 by the x3 clock 220p i think. Thoughts?

The 5205 was just replaced to get me back voices but some still missing. 2 that we know of. Could it be partially bad?
Also when I test the 5E ls273 pins 5,6 they read at .323 and the 4E ls273 reads .542 pins 5,6 . Both whether or not the 5205 is in.

Got the msm 5205 from John at John 's Jukes. He has all sorts of rare stuff. I should just bring the game down there and let him have a look. I'm actually sure he has another we can try. That is quite a job though.
Be nice to just find a couple chips...

OK I put board back in and tested ....... ..... [the fire again sound for extra ball serve is much harder to activate so I only did the feeder lane missing sound for this test] in addition to other common voice sounds.

when you try to play the missing sounds pin one on 5205 stays high and the pin 2 flashes low for a second and stays high. If you let the game run for a second or 2 she says " blow main ballast" and when that is heard pin 1 says high and pin 2 goes low until speech finished then goes back high.
When other voices [or voice/sound callouts ] are triggered it does the same thing and pin 2 remains low until speech is finished.
Thoughts

also tested ra1 and ra3. ra1 pins all fine at 4.7k except pin 4 on ra3 tested at 2.236k and pin 7 on ra1 which tested basically 2.236 as well.

Wow thanks so much for the offer! You are extremely generous! Many thank yous again kind sir. If that would work i actually have my rocky and bullwinkle right beside the sick/wounded torpedo alley. I think we need an earlier game though. TMNT or before will work for sure . I just need to change jumpers.
Hmm so you think the 5205 could be bad eh. I could not make the first pin go low no matter what sound I got to play. I will go and try to play more sounds and try to make it change state or even flash which it has not as of yet.
I need to find a couple/few msm5205 chips to order for cheap and just try another one.

I cannot for the life of me get the pin 1 to read anything other than high. Does not even flinch.

5E ls273 at pin 2 feeds that dead pin s1 on the 5205 and same ls273 feeds s2 on the 5205 from pin 5 and pin 6 feeds the 5205 reset signal from again the same ls273 at 5E

Ra2 reads funny with the 5205 installed as well if that matters.And fine when the 5205 is out

SOLVED !!! First off..Many thanks to the defog for sticking this out with me. And to Cactus jack and the others who contributed their time and wealth of knowledge. This sweet sweet victory is for us all! Thanks brothers!

Here is how it was found...After much tracking down we realized we could get no action on pin1 of the msm5205 no matter what....Pin 2 is the output of the ls273 at 5E driving the 5205 input at pin 1 . When I pin check this trace/connection on the underside of the board it pin checks out. But when you flip the board over and pin check the chip pins there was no continuity. Flipped the board back over and the ls273 at 5E had what looked like a little lack of solder on that chip from the factory on a couple pins only and one of them was pin 2!!!!!
Removed the solder and redid them with new and BAM beautiful data east 80's goodness. My missing sounds have come home!!

lol Hey thanks man.This part your victory too.Thanks for your posts as always !
Was it you I was talking to in another thread about the system 11 early boards and the sound reset trace we found bad on them etc?

Thanks eh. Your source for missing sounds will be different than mine as I had an older version sound board. You should examine all your eprom sockets and eproms first. Make sure legs are clean , sockets are clean and undamaged etc. Also try reseating and /or different ribbon cable or swap yours end for end and see if it changes.