#90054 from sam's club

[noviceho]

the sound unit stopped working. everything is connected and a fresh battery, any ideas?

[Chuck N]

I don't know about that specific engine, but have you looked for a sound on/off switch? 

Chuck

[noviceho]

yes the on/off switch is in the cab and it is in the on position

[Hunt]

Some more usual suspects.

Check the polarity of the battery, the label is reversed on the battery compartment lid of some tenders.

There is a second on/off switch. The second is variable volume control located on the underside of the tender.

Turn both switches on/off several times in case of contact oxidation.

Check for broken wire at the plug.

Carefully plug and unplug several times to burnish the contacts.

[Hunt]

FYI -
The 90054 Holiday Special set sold by Sam's Club -- the included  locomotive is a Bachmann large scale (1:22.5) Big Haulers 4-6-0, Anniversary edition , chassis version 5.   

[Loco Bill Canelos]

Noviceho,

Hunt is correct, set 90054 from Sams Club has an Anniversary 4-6-0 which is is equipped for basic chuff sound.

The only thing I can add to Hunts help is that sometimes "fresh batteries" are not really fresh. Try another battery from a different package of if you have a multimeter check the one you are using.

[noviceho]

it does have sound, checked both switches and volume. I will try unplugging wire and plugging back in and I will try another battery

[Hunt]

The 4-6-0 in the #90054 set has the second version Bachmann simple sound system powered by battery triggered by cam  producing only the exhaust chuff effect.