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Flintstones upper flipper weak in multi ball

R

Renvil

Site Supporter
5Years
Joined
Dec 29, 2019
Messages
85
Location
Mansfield, uk
Hey everyone.

I’m not even sure if this is a fault or a feature as it’s so consistent.

During multi ball the upper flipper is really weak. All 3 flipper coils are quite new and work with perfect strength at all other times.

Any ideas where to start looking or is it normal behaviour? Thanks in advance :)


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f321119470bcd4209185e56b749725cb.jpg


Do you mean this one here?

Thanks for the advice. I wonder how multi ball affects that board. I’ll look to get one if that’s the part.


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Renvil said:
f321119470bcd4209185e56b749725cb.jpg


Do you mean this one here?

Thanks for the advice. I wonder how multi ball affects that board. I’ll look to get one if that’s the part.


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Click to expand...


The slotted optos start to fail over time and instead of being on solid they start to go on and off very fast, reducing the signal strength to the driver and creating a weird pwm scenario. As Chris mentioned to you, swap the boards over to see if the fault disappears, or stays. You know then if its the opto board, or something else so you've narrowed the issue down. The next thing to swap after this is the fliptronic board in the backbox.
 
Thanks for the advice both.

I’ve swapped them round. Now to play a few games to test! [emoji16]


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Sooooo the conundrum continues.

I swapped the boards round and it made little difference.

But... now the left flipper has started double flipping and I cannot cradle the ball. I’ve swapped the boards back and it’s the same behaviour.

The flippers are quite new and all the wires are well soldered on.

Help [emoji23] where do I look next? I’ve done some googling and could it be the fliptronics board (if there is such a thing)

Thanks all

d41730e334e029a73e079eea8d35ca0c.jpg



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Are you saying the fault has moved back to the rhs now you've swapped the opto boards back, or the left flipper is still problematic and the upper right flipper is aswell now?

myPinballs said:
The next thing to swap after this is the fliptronic board in the backbox.
Click to expand...

if you have a spare, Or send me the board and i will test if for you in one of my games and repair if necessary.
 
I’m saying it’s a new fault where the left flipper just does this quick double flip and will not stay up regardless of which way the board behind the flippers are.


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Renvil said:
I’m saying it’s a new fault where the left flipper just does this quick double flip and will not stay up regardless of which way the board behind the flippers are.


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Click to expand...

Then you need to swap the fliptronics board with another game or a spare or get someone to test it for you and repair.
 
Correct diagnosis @CHRIS B PINBALLS
Holding coil had gone open circuit. New coil fitted and cured the machine gunning problem. But back to @Renvil original question, does anyone know why when the bolder machine is running, it causes the upper flipper to become weaker? This happens during multiball and during the 'shoot the machine' mode.
 
Stags6969 said:
Correct diagnosis @CHRIS B PINBALLS
Holding coil had gone open circuit. New coil fitted and cured the machine gunning problem. But back to @Renvil original question, does anyone know why when the bolder machine is running, it causes the upper flipper to become weaker? This happens during multiball and during the 'shoot the machine' mode.
Click to expand...

we’ve already been through this . If the flipper opto boards were not the issue, swap the fliptronic board. I think I’ve said that twice now. There are input circuits on that board that can also cause this issue
 
Sorry Jim
I thought your post regarding the Fliptronic board was to do with the dead holding circuit on the left lower flipper, not the weak upper flipper in multiball.
What would cause this when the boulder machine is running though.
Are you saying at that time that there would be a drop in voltage? Electronics isn’t my strong point, but just trying to understand what would be the difference, during this time.
 
Stags6969 said:
Sorry Jim
I thought your post regarding the Fliptronic board was to do with the dead holding circuit on the left lower flipper, not the weak upper flipper in multiball.
What would cause this when the boulder machine is running though.
Are you saying at that time that there would be a drop in voltage? Electronics isn’t my strong point, but just trying to understand what would be the difference, during this time.
Click to expand...

Firstly my thoughts and suggestions are based on the assumed fact the actual upper flipper mech has been rebuilt and has a new (not 'looks new') coil and sleeve, the bushing is also new and the flipper shaft gap is set properly and also that the flipper opto boards are not at fault. Using an opto board from a known good machine may be a better option than ones in this machine. (A mechanical issue could be the problem here if its a time in play thing as the flipper mech heats up with use the flipper can start to bind if the gap isnt set correctly.)

So, with that said. The theory of the fliptronic board causing this type of weird fault is similar to the flipper opto issue where the length of pulse given to the flipper on the power stoke is messed up by the input signal not being clean. This can be the flipper opto and or the comparator on the fliptronic board. Its only a 2 sec job to swap and help inform the fault finding. Swapping parts is the best way to isolate faults that are intermittent. A drop in power is not really likely as it would be effecting all flippers.

Anyway, thats my advice.
 
Thanks Jim
Just trying to learn and appreciate the knowledge from such veterans as yourself.
Between Chris and myself, we don't have any spare opto boards, or Fliptronic boards. Chris's Flintstones is the only machine from that era that we have.
So unless someone in the Notts area would be prepared to loan us those parts to swap out, to assist with the diagnosis, then we are a little stuck.
Really do appreciate your help. Thanks again.
 
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