-TECH- Pinbot no music but sound/voice ok

Bumping for the evening guys

#3 10 years ago

CMX

viperrwk

Inactive member

New Haven, CT

12y 42,650 4,167

Any bongs when you turn the machine on? Did you press the sound test button? What happens?

viperrwk

#4 10 years ago

TBM

travisbmartin

Pinside member

No bongs. I hear 5 or so taps. Very faint in the speaker. Not the game's knocker. Sound test button only gives me one sound. Doing the actual sound tests gives me sounds on every test but number 5.

#5 10 years ago

CMX

viperrwk

Inactive member

New Haven, CT

12y 42,650 4,167

You get *five* "taps" when you turn the machine on and not four? What happens when you run the sound and music tests?

viperrwk

#6 10 years ago

TBM

travisbmartin

Pinside member

It's either four or five taps from the speaker, sort of like if you move a speaker wire sometime and it makes a pop sound. It's not the knocker coil doing it. Sound tests through diagnostics I get a sound but Sound 5. Music test gives me nothing at all.

The tapping sound I hear when I turn it on is very faint. If I hadn't been in a completely quiet room I wouldn't have heard it.

#7 10 years ago

TBM

travisbmartin

Pinside member

Thinking about ordering the 1458 op amps that are on the sound board. If I remember correctly, op amps are easy to screw up, especially if you do like I did and put a plug in wrong. Thoughts?

#8 10 years ago

ADL

Pinchroma

Pinside member

12y 62,050 8,035 1

Ribbon cable. Sounds and music are different cables I believe on sys11

#9 10 years ago

KLB

kbliznick

Pinbot is the weirdest of the system 11 as the CPU generates sound and speech, and the remote sound board generates music AND sound AND speech. as far as I know it's the only one to utilize the CVSD speech chip on both boards.

Start with the op amps (the last one in line is OK otherwise you would have no sounds getting to the amps.

Then the 6116 Ram, the eproms and the processor all on the sound board.

#10 10 years ago

KLB

kbliznick

Also could be the small ribbon cable as Pinchroma said. see if you have one end flipped 180 degrees. Red stripe on pin 1 on both boards.

#11 10 years ago

TBM

travisbmartin

Pinside member

Pretty sure I have the ribbon cable in right, but I'll double check. I have a hard time seeing that is the problem if everything worked fine sound/music wise until I plugged in a connector wrong. Going to order some op amps off mouser when I get in from work tonight.

#12 10 years ago

KLB

kbliznick

yeah, but the small ribbon cable had to come off from the MPU when you pulled the board. Was assuming you put the cable on wrong when putting the MPU back into the game.

Do you get a bong when you turn on the game? If so then your sound board is booting and just not receiving commands from the MPU.

#13 10 years ago

KLB

kbliznick

sorry, just went back to the top of the thread and see the no bongs part. So this likely wouldn't be a ribbon cable problem.

#14 10 years ago

TBM

travisbmartin

Pinside member

Quoted from kbliznick:
sorry, just went back to the top of the thread and see the no bongs part. So this likely wouldn't be a ribbon cable problem.

It's cool. I know that whatever happened was because I plugged in something wrong because I missed a pin on the connector. So I think I had Voltage go to something that wasn't supposed to happen and popped. Which is my guess the op amps.

2 weeks later

#15 10 years ago

ESM

erok

Inactive member

Cayce, SC

10y 28,400 82 5 15

Just to tag on to this already discussion on Pin Bot sound issues, mine all the sounds work when first cut on. After about 5 games the speech stops. If you run the sound test after it stops all sounds work except for I think 6 and 7 which I assume should be speech. When cut back on the speech will come back for again 5 or 6 games. Any thoughts?

2 weeks later

#16 10 years ago

KLB

kbliznick

For Eroks problem, I fixed this exact issue many years ago. it was the 55536 CVSD chip on the MPU board (U5 or U3 I think). Speech would work for a few games, then get a little distorted and then cut out completely after 30 seconds. Turning game off and on again would fix it for another couple of games. Got the chip from www.arcadechips.com Could also be the 1458 op amps associated with the speech chip.

#17 10 years ago

TBM

travisbmartin

Pinside member