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(Topic ID: 261582)

Sound keeps cutting out on Gorgar


By BRW84

8 months ago



Topic Stats

  • 17 posts
  • 4 Pinsiders participating
  • Latest reply 7 months ago by KingHebes
  • Topic is favorited by 1 Pinsider

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#1 8 months ago

A few months back, the sound on my Gorgar started cutting out. It would usually be fine on startup, but halfway through a game, it would cut out; no hum from the speaker at all. I reflowed and replaced all the sound board connectors; the problem persisted. I sent my sound board to Clive at Coin-Op Cauldron; he gave it the full overhaul, but the problem still persists. Tonight, I reflowed all the connectors on my power board, but the problem is still occurring. I haven't yet replaced the connectors on my power board, simply because I need to order more connectors. However, it seems to me that if the problem was a power board connector, wiggling the connector would cause the sound to come back on, however briefly, but that isn't the case. No matter how I wiggle them around, the sound stays off. Does anyone have any suggestions for what to check next? Also, is it possible for a dying speaker to cause symptoms like this?

#2 8 months ago

Have all the electrolytic capacitors been replaced on the sound board and the power supply?

#3 8 months ago
Quoted from PinballManiac40:

Have all the electrolytic capacitors been replaced on the sound board and the power supply?

They have; the sound board caps were professionally replaced last week, and the power board caps were replaced probably within the last five years.

#4 8 months ago

No bad connection at the speaker?

#5 8 months ago
Quoted from PinballManiac40:

No bad connection at the speaker?

It looked solid, but I might check it again and reflow the solder.

#6 8 months ago

I just went down a similar no Gorgar sound issue, or issues. Mine quit talking, then no sound, then sound but not talking when I replaced all the sound roms. I finally dropped $110 on a new board and the problem is fixed.

Have you reset the sound roms? If you attempt this, be careful not to bend or break pins on removal.
If you think it might be the speaker and you are on the factory speaker replacing it wouldn't be a bad idea.

#7 8 months ago

I'm confident the problem isn't with the sound board, because as I mentioned, Clive at Coin-Op Cauldron did a complete overhaul of the board and I got it back last week. It looks like I have the factory speaker, so that may be the issue. I've noticed the heartbeat effect sounds a little scratchy, too.

#8 8 months ago

If the speaker is the issue, you got lucky. Keep us posted.

#9 8 months ago
Quoted from nosmr2:

If the speaker is the issue, you got lucky. Keep us posted.

Update: It ain't the speaker -- or at least I'm pretty sure it isn't. I reflowed the solder on the speaker wires tonight, but I still don't have sound. As of last night, I don't even get sound at startup; now there's just no sound at all. Through process of elimination, I'm guessing it has to be an issue with the power board. Can anyone tell me which power board connector(s) supplies juice to the sound board?

#10 8 months ago

I would try another speaker especially since all you did was solder on the speaker terminals. I had a bad speaker wire in my CV from the back of the speaker terminal to the cone.

#11 8 months ago
Quoted from PinballManiac40:

I would try another speaker especially since all you did was solder on the speaker terminals. I had a bad speaker wire in my CV from the back of the speaker terminal to the cone.

Thanks, I'll do that; it's the original speaker, so I wouldn't be surprised if it's given out after 40 years. I'd much rather it be a speaker than a board issue!

#12 8 months ago

Posting here to follow this. Let me know if you've solved this. Considering making my own thread, but might make sense to collab here. My gorgar sound stopped working 6 days ago. I did a flipper rebuild earlier that day. All sound was working fine for a couple hours after the rebuild. I had to play it later in league that night and the sound was extremely low, like i could barely hear anything when i started my game, and that slowly faded out to no sound by the end of my first ball. The previous player mentioned she could barely hear the sound as well. Now there is absolutely no sound, even with the volume up all the way. All fuses are ok and all wires/connections look ok. I will be trying to diagnose this soon, but not too sure what i should look for.

#13 8 months ago

I'll keep you posted. I haven't had much time to fiddle with it lately, but I'm hoping it's a bad speaker.

1 week later
#14 8 months ago

kinghebes
Just resolved it (or at least it appears that way). Turns out my speaker had gone bad. I popped a new one in and the sound seems to be working fine!

#15 8 months ago

Nice

#16 8 months ago

Like you said, I definitely got lucky.

3 weeks later
#17 7 months ago

Updating my issue, incase it helps anyone in the future. I had a guy walk me through over the phone some test points with a multimeter on the sound board. It appeared my negative line wasnt giving a proper reading. The tests lead my friend to believe the bridge rectifier was bad. I got a replacement mda200 and put it on the board. I also reflowed all the headers for good measure. GORGAR! SPEAKS! AGAIN!

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