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(Topic ID: 140744)

Evil Knievel solenoids weak

By Anothertoy

7 years ago



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#1 7 years ago
OP
 
RIK

Anothertoy

Pinside member

8y 31,800 97

it seems that all of my EK solenoids, flippers, pop bumpers, sling shots, etc are weakening. I have an altek solenoid board, MPU board and rectifier board. Any suggestions are appreciated.

RK

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#2 7 years ago
 
KLH

KenH

Pinside member

US Sierra Vista, AZ

10y 46,900 727 11

If they're ALL weak, then maybe a connector issue on the 43v supply?

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#3 7 years ago
 
CDY

cody_chunn

Pinside member

US Mobile, AL

8y 64,800 4,520

Line voltage drooping?

What's the voltage reading on any coil's lugs?

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#4 7 years ago
OP
 
RIK

Anothertoy

Pinside member

8y 31,800 97

I got 38v on all coils.

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#5 7 years ago
 
CDY

cody_chunn

Pinside member

US Mobile, AL

8y 64,800 4,520

That's pretty close. What does J1.6 on the rectifier board look like? Any signs of scorching/discoloration?

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#6 7 years ago
OP
 
RIK

Anothertoy

Pinside member

8y 31,800 97

Brand new Great Plains rectifier board and repinned. I will check that specific pin again.

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#7 7 years ago
 
CDY

cody_chunn

Pinside member

US Mobile, AL

8y 64,800 4,520

Are the chimes and knocker weak as well?

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#8 7 years ago
 
???

Validpowerdetect

Inactive member

US Ocala, FL

10y 35,650 337 15

Coil sleeves old? A new sleeve will improve any coil operation.

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