Just bought a 1998 set (421 and 422) Budd set from Williams.
No sound, except a burp once in a while.
Took apart shell, nothing weird.
Any suggestions ?
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Assuming they have not been modified, they do not have sound, only a horn. In my experience, they "burp" if the DC voltage offset is not strong enough/long enough. Running them with a postwar transformer seems to create this problem more than modern transformers, but it is possible with them as well. In the postwar transformers, I think it is related to the copper rectifier disc not working properly or not having enough current passing through it. Certain waveforms from modern transformers also create an issue. Which transformer are you using?
Internally, I think the potentiometers on the circuit board change the tone and pitch of the horn.
ZW, i tought about the fact of the transformer being the cause. There is 2 potentiometers on the board of the horn, one for the sound level ?, the other for the voltage input ?
Thanks,
Thanks for your input. I think i'll leave as is.
