|
|
Post by shrimpeater on Feb 20, 2023 18:49:11 GMT
Some buttons work,some don't. The write in always starts after buttons are pressed,but sometimes it don't find certain selections and just spins. I'm pretty sure the contacts need cleaning on the button assembly.I have sprayed deoxit on them several times,and seems to help,but still not all make a selection.
Question is,what is the best way to clean this assembly.Should I remove it and put in a degreaser,or remove it or just spray by hand, or some other type cleaning,adjusting.
Tried looking for a u tube video but found nothing. The selector "drum" has already been cleaned and deoxed so I'm sure it's not that. Thank you
|
|
|
|
Post by jukenorman on Feb 20, 2023 19:39:18 GMT
|
|
|
|
Post by shrimpeater on Feb 20, 2023 22:34:05 GMT
Thank you . Looks like I should go ahead and remove and degrease. I can see how these buttons would get crude in the mechanics since they are in a flat plane.
I'll be able to see the contacts and check for continuity while they are out also.Just wanted to make sure it was a good way.
Read sticky--Didn't even think about that.
|
|
|
|
Post by shrimpeater on Feb 27, 2023 21:16:24 GMT
OK - So I degreased the selector assembly,and that apparently helped a little,but some combinations don't get selected.The write in just spins. So what else should I look at?I've checked the cabling and connectorss,but maybe there is a fault I just haven't hit on yet.
Thank you
|
|
|
|
Post by jukenorman on Feb 27, 2023 22:22:06 GMT
Had you cleaned the write-in printed circuit contact plate (shown on page 14 of the manual)? And the rotating wipers? It's difficult sometimes to remember what's already been suggested! That contact plate and the selector switches are normally the problem for these sort of issues. However if you had some particular selections that were failing, it might be something like a bad joint on the wiring to the contact plate or even wiring to the selector switches.
Norman.
|
|
|
|
Post by shrimpeater on Mar 12, 2023 20:13:37 GMT
I cleaned the circuits with alcohol and then used deoxit on a rag.Also gave the wipers a good cleaning.
So....I even changed the selector drum,thinking I had a wire issue.Of course,same problems.
But I got it down to the 6-7-8 .
I'm guessing they are not getting power to the selector drum so the write in circuit doesn't see it and just keeps spinning.
I'm gong to pull the power supply (again) and start looking at what color wires are what and where they go in the there.
|
|
|
|
Post by jukenorman on Mar 12, 2023 21:25:31 GMT
If you have it down to 6-7-8, it will be the selector switches. There's a series link through the switches, it will be failing between 5 & 6.
Norman.
|
|
|
|
Post by shrimpeater on Mar 14, 2023 2:31:49 GMT
Thanks Norm. Always appreciate your input.
I took the number side of the selector button assembly apart and cleaned all sliders and contacts by hand,then reassembled.Guess I need to remove and disassembble again.Maybe I missed something. I was wondering why a person couldn't jumper the wires to find this problem,but I guess you need to know what colored wire to jump and such. I did order a wiring diagram for this machine.I can follow a schematic. The diagrams in the manuel is good,but leaves just enough out to make a problem like this hard to pinpoint . The manuel says nothing about a series link that I know of.
Thanks
|
|
|
|
Post by jukenorman on Mar 14, 2023 9:19:36 GMT
Look at the schem-a-gram on page 29 and find the highlighted black box "6". From there if you follow the PUR-ORN, you will see that it passes through the number pushbutton switches (series link). In the example on page 29, the letter number "7" is shown depressed - so the circuit runs through all number switches lower than 7. When 7 is released, it re-makes the series link; however if that contact is poor, selections above that number cannot be made.
This is a common problem and I would be very surprised if it wasn't covered in the "stickies".
Norman.
|
|
|
|
Post by shrimpeater on Mar 15, 2023 19:54:08 GMT
I see it. Whats odd here is the numbers go 1 - 0 ,my keyboard goes 1-8,but I underastand now about the seies link,and will most likely have to remove and dissassmble again.But thats fine. I would just like to get it working properly so I can tun my attention to the amp.
I don't however understand what "top level" and "bottom level" stand for on page 30 at the numbers and letters.
Thank you
|
|
|
|
Post by jukenorman on Mar 15, 2023 20:54:12 GMT
Top level and bottom level just means that there are more than one set of contacts associated with each button - bottom level is in the circuit that operates the write-in relay and top level is in the circuit that operates the hammer coils. It should be covered in the manual although I can't find it but I only have a pdf and it's difficult to find the explanation boxes relevant to the schem-a-gram circuits.
Norman.
|
|
|
|
Post by shrimpeater on Mar 19, 2023 17:04:01 GMT
I hate to say it,but no matter what I do,I can't get this to make all selection,so I have decided to part it out.
The machine was not in top shape when I started. Can't read where the records in carousel go,missing coin windows,etc.. I just though it might be worth a shot. I like fixing things . I took the button assembly apart twice.It's not coming apart again,because I don't think it"ll reassemble.They weren"t really made to take apart.
.I've turned my attention to a 425 I have,which is in much better condition.
|
|
