(Topic ID: 104189)

Comet Club - Admit One


By midcoastsurf

3 years ago



Topic Stats

  • 373 posts
  • 80 Pinsiders participating
  • Latest reply 3 days ago by vid1900
  • Topic is favorited by 29 Pinsiders

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There are 373 posts in this topic. You are on page 8 of 8.
#351 8 days ago

No pierre, thats the direction I will head next as I wanted to knock out all the straightforward stuff first. Now that I have eliminated these steps as stated earlier what exactly am I looking for on the board itself?

#352 8 days ago

Do you think installing Superbands would increase the chances of damaging the ramps? I recently installed some and noticed a lot more glass hitting on the center ramp and the ball actually flying off the back of the ramp. This never happened with the original flipper bands. Thanks.

#353 8 days ago
Quoted from PinDeLaPin:

Thank you Jay for the pick and th he wiring info.Turns out my wires were backwards on the left side of the plug. Unfortunately i still have the original issue that all lights associated with row 5 are out. I have unplugged and then reattached every plug associated with the red/green striped wire leading to every lamp in row 5. I am really confused at this point because I have traced that wire looking for any loose connections or defective diodes and am coming up short. Any more thoughts from anyone as to what I am missing? I would almost bet its something thats staring me square in the face but i'm just missing it.

Sounds like a bad transistor. I had one fail on my Comet, lighting up another row when it wasn't supposed to be lit. Since you have to pull them off to test, it is just simpler to replace the one you feel is bad.

#354 8 days ago

I wouldn't use them on comet I put them on and experienced the same things you stated. I went back to the Perfectplay silicon ones terry sel los over at pinball life.

#355 8 days ago
Quoted from Kawydud:

Sounds like a bad transistor. I had one fail on my Comet, lighting up another row when it wasn't supposed to be lit. Since you have to pull them off to test, it is just simpler to replace the one you feel is bad.

Was the transistor on the mpu board?

#356 8 days ago
Quoted from PinDeLaPin:

Was the transistor on the mpu board?

Yes, I believe they are tip122.

#357 8 days ago
Quoted from Kawydud:

Yes, I believe they are tip122.

Thank you will start testing those later on today.

#358 8 days ago

Make sure you remove them to test them. Otherwise they can test good. I changed all sorts of things trying to fix my light issue years ago, since my transistors tested good. But I tested them on the board. Should have went with my gut and changed the transistor first.

#359 8 days ago
Quoted from Kawydud:

Make sure you remove them to test them. Otherwise they can test good. I changed all sorts of things trying to fix my light issue years ago, since my transistors tested good. But I tested them on the board. Should have went with my gut and changed the transistor first.

I've never had a shot transistor test good on or off the board. If you're not sure which one it might be, test the whole group. When you find a bad one, remove and replace it along with its predriver (even if the predriver checks out okay).

#360 8 days ago
Quoted from pinheadpierre:

I've never had a shot transistor test good on or off the board. If you're not sure which one it might be, test the whole group. When you find a bad one, remove and replace it along with its predriver (even if the predriver checks out okay).

My light issue just kicked my ass, all transistors tested fine on the board. So I went and changed out logic chips. Still same problem. Went through everything else on the board and still same issue. Finally just replaced the one transistor that I thought was my issue, and light issue was gone.

Since they are so cheap, figure it would just make sense to change out the one I thought was a problem right off the bat in the future.

#361 8 days ago
Quoted from Kawydud:

My light issue just kicked my ass, all transistors tested fine on the board. So I went and changed out logic chips. Still same problem. Went through everything else on the board and still same issue. Finally just replaced the one transistor that I thought was my issue, and light issue was gone.
Since they are so cheap, figure it would just make sense to change out the one I thought was a problem right off the bat in the future.

Any chance you could post a pic of the transistor on the board you replaced and any pre drivers also plz and thk you.

#362 8 days ago
Quoted from PinDeLaPin:

Any chance you could post a pic of the transistor on the board you replaced and any pre drivers also plz and thk you.

I sold my game at Allentown this year. I can try to get some pictures of my Sorcerer board when I get home.

#364 8 days ago

Thanks will definitely try testing those next and updating on my results.

#365 8 days ago

Very little time today to mess with my machine. A 9 week old child doesnt work with your schedule very well. I noticed those transistors have 3 leads on them. What is the process to test them to find if one is faulty with 3 leads instead of 2? Thks

#366 8 days ago
Quoted from PinDeLaPin:

Very little time today to mess with my machine. A 9 week old child doesnt work with your schedule very well. I noticed those transistors have 3 leads on them. What is the process to test them to find if one is faulty with 3 leads instead of 2? Thks

Some help here - http://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11#Lamp_Matrix

Scroll down for transistor info here - https://pinballrehab.com/1-articles/solid-state-repair/tutorials/120-electronics-tutorial-transistors

#367 8 days ago

Anyone know where I can get a spiral ramp?

#368 8 days ago
Quoted from mikusm:

Anyone know where I can get a spiral ramp?

Send a PM to @freeplay40 - he just made some and they are awesome.

#369 7 days ago
Quoted from PinDeLaPin:

I wouldn't use them on comet I put them on and experienced the same things you stated. I went back to the Perfectplay silicon ones terry sel los over at pinball life.

Thanks. I agree, not worth taking the chance given the trouble to find parts for this game.

#370 5 days ago

Does anyone know what material is used to cover the speaker and/or where I can get some? Just purchased a Comet and it is missing. Can't find ant references.

#371 5 days ago
Quoted from mikusm:

Does anyone know what material is used to cover the speaker and/or where I can get some? Just purchased a Comet and it is missing. Can't find ant references.

Probably speaker cover fabric, look for similar at Parts Express

#372 3 days ago

Ok so I did a whole lot of testing now that I actually had a little spare time.

Quoted from Kawydud:

Yes, I believe they are tip122.

So Q35 which is a tip122 is only giving me a reading off 1 leg only. So with that i would assume (I know I know never assume right) that more than likely that is a bad transistor and is what is causing my lighting row problems.

#373 3 days ago

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There are 373 posts in this topic. You are on page 8 of 8.

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