(Topic ID: 218176)

Roadshow eyelids up coil stuck on


By SPARKY70

1 year ago



Topic Stats

  • 58 posts
  • 9 Pinsiders participating
  • Latest reply 7 months ago by german-pinball
  • Topic is favorited by 5 Pinsiders

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There have been 14 images uploaded to this topic. (View topic image gallery).

Fuse Roadshow (resized).JPG
C3C0A8B6-83A0-4954-A394-2C9EF35F2F78 (resized).jpeg
schematics q54 zoomed (resized).png
2019-01-13 00_03_41-TEDWIRING (resized).jpg
pasted_image (resized).png
pasted_image (resized).png
sol11 short (resized).jpg
99E3AB72-823D-4155-81EF-2A9A409EED96 (resized).jpeg
FA5F8F22-7118-4305-9E1E-845EC4A37C51 (resized).jpeg
test sol11 (resized).jpg
8529E70F-949F-40DF-9CF9-7140F8FEFC19 (resized).jpeg
97B54598-826D-4D1A-B915-DC921D677B13 (resized).jpeg
PDB Driver (resized).png
C1ADCA7C-22D2-441D-90B7-514DB79EAFBA (resized).jpeg

There are 58 posts in this topic. You are on page 2 of 2.
#51 1 year ago

The coil resistance should be @ 22 ohms.

#52 1 year ago

Thanks Grumpy and pin guy ill take a look. Soarky

6 months later
#53 7 months ago

I have a similar problem with my Roadshow, specifically with the SM-31-900-DC coil on Ted. The old coil was totally burnt up and had even melted. When I power on my Roadshow the new coil drags down the plunger and closes the eyes (good), which means the new coil and power works. However, the coil is stuck on and will obviously either blow a fuse and/or melt again. I have not allowed the game to have power on for more than like 3 seconds tops. Since I can hear the coil is stuck on.

So, there is a problem with my machine. When I bought it even parts in the Ted head was missing, I now have all the parts, but since there is so much job with removing and re-adding the head I obvisously need to test this first.

There is no sleeve and there is ridiculously much space for the plunger, guess that is what it is....

It looks like there has been work done by previous owners, which means I can't even trust what's currently mounted/wired.

Can anyone send me similar pictures and/or confirm wiring from my attached image?!

Some findings from earlier posts in thic topic :
* Q54 may be the problem (or any of the components in the zoomed in schematics)
* r90
* r91
* r92
* r93
* d22
* 47LS274 U4?

All help is much appreciated!

2019-01-13 00_03_41-TEDWIRING (resized).jpgschematics q54 zoomed (resized).png
1 week later
#54 7 months ago

Ted now seems to work, i replaced the Components on the image as well the large capacitors and all 5 br’s while at it, all on the power board.

The q54 (tip 102) was bad (confirmed), i also replaced q53 even though it measured good.

It’s not easy to get a connection top side on the large capacitors even though i have flux, needed to add extra wires on the backside to get a solid connection on c5, c7 and c9.

Now next step Will be to remove everything on the playfield, have a new plastic kit, rubbers,posts many hours still needed...

C3C0A8B6-83A0-4954-A394-2C9EF35F2F78 (resized).jpeg
#55 7 months ago
Quoted from zoda:

It’s not easy to get a connection top side on the large capacitors even though i have flux, needed to add extra wires on the backside to get a solid connection on c5, c7 and c9.

Doesn't look like the bridges were easy either

#56 7 months ago

In the past ive added a 1.5 amp slo blow fuse near the head assy on the power side that feeds the coils for the eyes. Just one fuse for the head power.Sometimes springs, links break inside the head and short on the little coils. The coil energizes and locks on but does not draw enough current to blow the 3 amp fuse on the driver board until more severe damage has been done such as burnt traces etc. Ive seen a few of these driver boards with holes burnt in them due to a failed coil in rudys or teds head. A small investment to save your driver board.

#57 7 months ago
Quoted from pinballplusMN:

In the past ive added a 1.5 amp slo blow fuse near the head assy on the power side that feeds the coils for the eyes. Just one fuse for the head power.Sometimes springs, links break inside the head and short on the little coils. The coil energizes and locks on but does not draw enough current to blow the 3 amp fuse on the driver board until more severe damage has been done such as burnt traces etc. Ive seen a few of these driver boards with holes burnt in them due to a failed coil in rudys or teds head. A small investment to save your driver board.

Great tip! I will make sure to add this to my heads!

Previous owners have NOT had proper solder knowledge, and some components were really badly mounted, with injuries to cables, components and traces. All fixed now...

#58 7 months ago
Quoted from pinballplusMN:

In the past ive added a 1.5 amp slo blow fuse near the head assy on the power side that feeds the coils for the eyes. Just one fuse for the head power.Sometimes springs, links break inside the head and short on the little coils. The coil energizes and locks on but does not draw enough current to blow the 3 amp fuse on the driver board until more severe damage has been done such as burnt traces etc. Ive seen a few of these driver boards with holes burnt in them due to a failed coil in rudys or teds head. A small investment to save your driver board.

GREAT TIP!!!

Did you add the fuse this way?

Fuse Roadshow (resized).JPG

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There are 58 posts in this topic. You are on page 2 of 2.

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