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Anyone else have trouble with bad volume pots?

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  • Member since
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  • From: Baltimore, MD, USA
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Anyone else have trouble with bad volume pots?
Posted by 4kitties on Thursday, February 8, 2007 11:18 AM

Hi all,

I just purchased a Lionel PRR F-7 ABBA set (24584 and 24588) and it arrived on Monday.  I put it on the track and it performed flawlessly.  I went to run it for the 2nd time last night and I had no sounds.  Well, almost no sounds - I can very faintly hear the bell and the horn if I put my ear right up to the lead engine.  The other sounds probably are there too, but are too quiet to hear.  Running in conventional mode didn't make any difference.  Needless to say, I am very disappointed that a set so expensive (nearly $1000) would have such a defect after only 1 operating session.

I called Lionel and one of the things they asked me to check was the volume knob.  I asked why I would need to check it if I had not touched it.  The person I spoke to said that they have a problem with volume pots, that some of them are touchy.  She recommended I try moving it through its range and see if the sounds return.  If so, she will send me a pot to install myself and save the 2-month-plus (!) wait for factory service.  If not, then she was out of suggestions and I will have to have someone look at it.  I hesitate to take it to an authorized service station because the last time I did so with a Lionel product, it sat there 3 months before they finally called me to tell me they couldn't fix it and would have to send it to the factory.  By then the warranty had expired.  Fortunately the repair was still covered.  That repair took 5 months total.  Needless to say, I want to avoid a repeat of that scenario.

I sure hope the volume pot is to blame, and I am wondering if other forum members have had the same type of problem.  I would feel better knowing I am not alone in this.

By the way, the set is fabulous and I really like it other than the sound problem.

Joel

 

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Posted by Anonymous on Thursday, February 8, 2007 11:41 AM
Joel,
How close are you to Sykesville?

Brent
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Posted by Roger Bielen on Thursday, February 8, 2007 12:00 PM
Have you tried an engine reset, or reprogram?  Or tried increasing volume with the CAB-1?  Sometimes they'll do quirky things that a reprogram will cure.  Instructions with the program codes are usually at the end of the owner's manual.
Roger B.
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Posted by chuck on Thursday, February 8, 2007 1:44 PM
The mini-pots on the toy train sound boards are pretty small and a bit delicate.  It is very easy to wrench the pot past one of the limits and damage it.  In some cases you can get it back on track, sometimes not.  Sometimes the shaft will get bent an lift the wiper off of the resistor grid.
When everything else fails, play dead
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Posted by Anonymous on Thursday, February 8, 2007 2:15 PM
Joel,
The reason I ask is there is an excellent Train store in Sykesville - Purkey's Toy Trains.  Tom has done a lot of work for me, they are very reasonable and pretty quick.

I'm actually taking an engine in this afternoon for inspection, possible repair!

Brent
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  • From: Baltimore, MD, USA
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Posted by 4kitties on Friday, February 9, 2007 11:30 AM

 lionroar88 wrote:
Joel,
How close are you to Sykesville?

Brent

I am about 18 miles away, roughly a half hour door-to-door from my house.

Joel

  • Member since
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Posted by 4kitties on Friday, February 9, 2007 11:39 AM

Hi all, and thanks for your input.  Update:  last night I tried adjusting the pot - no luck.  Then I tried flipping the sound on/off switch a few times.  I thought that worked because after I flipped it one time, I got some hiss and static from the speaker.  I flipped it a couple more times and the sounds returned, only to drop out again a few minutes later.  I was able to get the sounds back again - I don't know whether the problem is related to the switch - but they keep dropping out.  As before, I can faintly hear them when I'm up close.  I will pull the body off this weekend and look for bad connections, which this is acting like.  I would not expect a sound board to "repair" itself several times.

Purkey's is my favorite hobby shop and I know Tom as he has serviced several of my MTH engines.  However, Wiley once told me that they are not a Lionel Service Center and that I would have to pay for repairs done there, even if the item is under warranty.  That's what led me to take my TMCC crane elsewhere, where it sat for the 3 months I wrote about last time.

Joel

 

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Posted by Anonymous on Friday, February 9, 2007 12:21 PM
Joel,
OK, I think I know where you took your engine... a little place in Mount Airy?  They had an engine of mine for over 6 months!

I've been trying to find a reputable Authorized Service Center in the area.  I'll let you know if I ever find one!

Brent
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Posted by chuck on Friday, February 9, 2007 1:07 PM
It may not be the pot at all.  You might have a bad speaker or a bad speaker wire or just poorly soldered connections.
When everything else fails, play dead
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Posted by 4kitties on Friday, February 23, 2007 10:49 AM

Good news, it is the volume pot.  I had to take the body off to confirm, but wiggling the terminals of the pot made the sound come and go.  I thought it was a cold solder joint on one terminal so I took off the shrink tube and resoldered it.  The problem moved to the next terminal.  I called Lionel yesterday and they are sending me a new pot with wiring harness.  Apparently this is a widespread problem.  I'm just glad I don't have to send this in and wait 2 months or more.

Joel

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Posted by sulafool on Friday, February 23, 2007 11:13 AM
Yeah, I had one too, on my Rio Grande tunnel motor. Lionel took care of it for me, but I gotta think it would have been cheaper for them to spend a few extra cents for a better component than to fix all the bad ones. I lament the day the beancounters took over; not unlike military generals planning on an "acceptable number of casualties".Sad [:(]
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Posted by ChiefEagles on Friday, February 23, 2007 3:06 PM
Chuck is right but they do have "pot" problems.  Had one Scale Lionel SD80 that was LOUD and an identical one that was LOW.  Dick Teal suggested I change the pot as that was usually the problem.  YES it was.  They are easy to change.  Also, on two speakers, wires from one speaker to the other are suppose to be crossed.

 God bless TCA 05-58541   Benefactor Member of the NRA,  Member of the American Legion,   Retired Boss Hog of Roseyville Laugh,   KC&D QualifiedCowboy       

              

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Posted by IronHoarse on Friday, February 23, 2007 4:45 PM

Joel wrote...

 "...and I am wondering if other forum members have had the same type of problem..."

 

Joel,,  I have that same set but fortunately mine has worked flawlessly.  Sorry to hear that yours doesn't.   Hope you get it fixed with out too much trouble.  Like you,  I really like the set too.

Ironhoarse "Time is nature's way of preventing everything from happening all at once."
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Posted by 4kitties on Wednesday, February 28, 2007 10:52 AM
 IronHoarse wrote:

...Hope you get it fixed with out too much trouble.  Like you,  I really like the set too.

Lionel sent me the pot quickly.  Looks like I'll have to move the smoke unit and possibly some other things out of the way in order to unplug the wiring harness.  But I'm glad I didn't have to send the lead unit in and wait several months.  I call this a happy ending.

Joel

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