Fish Tales- Pissweak coil

[Strangeways]

Handy with a soldering iron, Wotto ?


You know I am Nino 

 

Unsolder one side of the coil and then set the multimeter to OHMS.. Measure the coil and report back !!

[pinnies4me]

AE-26-1200 are low power coils, used in the pop bumpers. AE-24-900 might be the right one, I've seen those in ball popper type applications. Do you have the manual??

Still interested in knowing if the coil is the correct one or not.

[Strangeways]

AE-26-1200 are low power coils, used in the pop bumpers. AE-24-900 might be the right one, I've seen those in ball popper type applications. Do you have the manual??

Still interested in knowing if the coil is the correct one or not.

wotto reported that it is correct as is in the manual - AE-027-1200 ..

I THINK they should measure around 7 Ohms.

[Wotto]

Yeah I checked the manual again just now ( section 2-20 , Point 9.e ) and it states an AE26-1200.

will test it but.

[Strangeways]

Yeah I checked the manual again just now ( section 2-20 , Point 9.e ) and it states an AE26-1200.

will test it but.

I stand corrected..

http://www.flippers.com/coil-resistance.html

Should be around 11 Ohms.

[The pinballist formally known as Dean Morgan]

Without seeing it, this fault Sounds mechanical rather then electrical to me....

[Wotto]

Without seeing it, this fault Sounds mechanical rather then electrical to me....

Hi Dean,

I have changed the coil sleeve and checked the brackets, checked the spring to make sure it wasn’t catching on something , loosened ad re-done the nuts holding it the coil to the bracket in case it was out of ‘square’ and after all that it moves VERY freely when moving by hand, there is little to no effort required to move it back and forth.

I don’t think there is anything more mechanical to it?

[Extra Ball]

I only suggest this because all else has failed. Try making the little thing that actually comes into contact with the ball a little higher......and maybe this part is worn?

[dj10555]

If Wotto has checked all the mechanical side of the operation, I'm wondering if he has a blown driver which runs this coil?

[Wotto]

This reply will highlight my lack of knowledge even further but if the driver was gone wouldnt this not fire at all.
It does fire , its just REALLY weak and it JUST gets the ball out of the hole.

[ajlaird]

Try swapping in a replacement coil. That will eliminate another possibility.

[silverball]

Measure the voltage at the coil, try grounding the coil and see if it fires at full strength.

[Strangeways]

Measure the voltage at the coil, try grounding the coil and see if it fires at full strength.

A very good point here that I over looked.

I spoke to Wotto last week and the coil measures zero ohms out of circuit = Bizarre !

He has ordered another coil.

[stuba]

Measure the voltage at the coil, try grounding the coil and see if it fires at full strength.

i'm betting dave is on the right track given what else has been tried. its not getting full voltage for some reason. if it fires at full strength when grounded then probably failing driver transistors. swap them out.

[Pinball Fixers]

Measure the voltage at the coil, try grounding the coil and see if it fires at full strength.

A very good point here that I over looked.

I spoke to Wotto last week and the coil measures zero ohms out of circuit = Bizarre !

He has ordered another coil.

Zero ohms out of circuit usually means that the diode has shorted, or if no diode then shorted turns inside the coil... but this would lead to a blown transistor also.

The coils works, although pissweak... Hmmm.