(Topic ID: 305875)

Question on opto switch

By crujones4life

2 years ago



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#1 2 years ago

I have a Maverick. There is an opto switch (transmitter and receiver) at the entrance to the paddle wheel. This opto loves to crap out due to the high vibration in the area which leads to failure usually due to cracked solder. The opto in this game emits a visible red light (transmitter). Game works fine until it warms up for a few minutes then opto has phantom closures over and over...

My question is this...If the opto is failing but the light is always visible (never flickers)...would the most likely point of failure be the receiver and not the transmitter?

I bought a NOS pair of optos a few years back after reflowing solder on the transmitter several times failed to fix the opto. I never tried reflowing solder on the receiver because it fecking sucks to remove and I just wanted to be done with it so I bought a new set. Well now I can't find a new set.

So waddya think?

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#2 2 years ago
Quoted from crujones4life:

I never tried reflowing solder on the receiver

Try.

LTG : )

#3 2 years ago
Quoted from LTG:

Try.
LTG : )

Lol

So if the transmitter is emitting light...it's working correct? Isn't that all it does?

#4 2 years ago

Its possible the light is flickering so fast that its not visible to you, but is to the receiver. Reflow the solder.

#5 2 years ago

Although I have never seen it, it is possible the whisker wire within the LED can be broken loose due to vibration as well.

As Billc479 said - it should be on all the time. Your eyes will never catch a slight flicker but the receiver sure will. Could be the solder joint on either emitter or receiver, at the LEDs or the other components.

Looking at R2 - I don't see any solder joint meniscus on top joint. In a high vibration environment, this is reqruied. I would reflow his resistors.

Solder_Joint (resized).jpgSolder_Joint (resized).jpg
1 month later
#6 2 years ago

Update. Reflowed solder on every component of both boards a few weeks ago. Been solid ever since!

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