70's sound of steam tender trouble shooting - Page 2 - Model Train Forum - the complete model train resource
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Old 09-17-2010, 11:49 PM   #11
T-Man
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Using a larger resistor you get less noise until you jump around it with a piece of wire

.
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Last edited by T-Man; 09-19-2010 at 11:07 AM..
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Old 09-24-2010, 09:01 AM   #12
Blk69
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Not sure how to link Youtube video. This is my bench test similar to yours. You can hear the incorrect sound my tender is making. Any idea what might me wrong?

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This is the under side of my Lionel 8304 engine. There is a flap on the smoke unit that has a set of contacts on it. As the wheels of the engine turn, the rods on the wheels activate this flap.

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Could find the camera, so made a video of my smoke unit. IF you look close you can see the contact that get activated when the flap gets pressed. It also is linked the the smoke bellow so the contacts get made as the smoke is forced out.

Last edited by T-Man; 10-12-2011 at 11:22 AM.. Reason: Fix you tube links
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Old 09-24-2010, 12:55 PM   #13
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My first impression is to isolate the speaker from the frame. Your magnet is on the frame. Don't use the rail. Use two wires from a transformer.
When you by pass the resistor touch the connector not the resistor wire. The conector should be cleaned up.

You may have a bad wire so skip the resistor power it up and jiggle wires.

These are just from a glimpse now.

I would like to know the color bands on the resistor on the smoke unit. I found the metal tab very interesting . Thanks!

Does you tender use a center rail pickup? After seeing the smole unit I guess not.

I got batteries today is there anything else I can show you?
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Old 09-24-2010, 11:48 PM   #14
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I watched the first video. WHy does it spark at 22 seconds?????
What transformer are you using???? Is it AC?

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Old 02-01-2011, 12:24 PM   #15
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Maybe this will help.

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File Type: jpg steamchart.JPG (42.5 KB, 250 views)
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Old 03-16-2012, 10:57 AM   #16
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Question

Appreciated the information on this thread. Here is my experience.

I have a 8303 loco which I bought years age at a yard sale. I just bought an "as-is" tender on eBay to go with the loco. Luckily I read your posts before powering the tender.

I opened it and found the speaker rotted and the circuit board insulation foam gone.

I replaced the speaker and foam. The board visually looks OK (no obvious burns,etc). (I also insulated the speaker body from the frame just in case.)

In first powering the tender I found the following.

When touching the tender power wire to center rail, a loud white noise comes from the speaker.
When I tap the tender's wire rhythmically to the center rail, I get a corresponding rhythmic white noise from the speaker....not a "steam chug" sound. When the wire is attached to the loco and run, based on speed, I hear a corresponding rhythmic soft clicking sound from the tender (no white noise or "chug"). Hard to hear because of the noise from the loco wheels. Does this mean the loco switch is working, but the tender electronics is shot? What parts may be at fault?

Is any of this expected? Can I repair the performance in any way?

Any help would be appreciated!
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Old 03-16-2012, 02:17 PM   #17
T-Man
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Use a tag search and see the "sound of steam" threads, A recent one shows the activator on the smoke unit. Without hearing it I doubt I can help.
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Old 03-16-2012, 09:47 PM   #18
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I f your tender has a center roller try to get the whistle to work.

To me if you get any sound that is what it is suppose to be. Yes it is static noise but placed under a tender shell the sound improves and it was a big hit back in the 70's.

I started the threads just to get a background on these tenders. They are around and still work, being the first generation of electronic sound. I really have no idea how to troubleshoot. One member just switched parts.

The simpliest way to fix is just get a replacement. I have seen lone tenders for 10 bucks at shows.
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