Very Loud Buzzing !!hh

[258rp]

Flying Scottman & E-Link, to alarming high pitched sqweeling ??

[Chrissaf]

Are you absolutely sure that your Scotsman has actually got a DCC decoder fitted inside it. Very loud squealing is a symptom of putting a DC loco electric motor across the 28 volt peak to peak 7Khz** DCC signal. The DCC decoder converts this alternating DCC signal into controlled DC to operate the motor. Without the decoder in circuit, the electric motor will be vibrating at this high frequency like a high pitched buzzer.

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If your Scotsman does not have a decoder fitted, you have a very high risk of burning out the motor. Do not let this squealing noise continue until you have confirmed whether or not a decoder is fitted.

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Note ** 7Khz = a frequency of 7,000 alternating cycles per second. The DCC signal is typically in the range 7Khz to 12Khz or thereabouts. This is in the audible hearing range of a normal person.

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Note: If the Scotsman loco box says 'DCC Ready' then it hasn't got a decoder fitted, it just has a socket where the decoder can be plugged into it.

[258rp]

Well l never !!!

Why doesnt Hornby state that in some fashion, even if just a piece of paper inside the box. lv spent hours messing about with this.

To the point lv replaced my E-Link twice, thingking l must of done somethink wrong as, shorted it out or my Scotsman....

Go on, tell me Hornby has, in some obscure way stated just that the DCC ready isnt actually DCC ready ?

.....Ahh, some times you just have to take it on the 'chin n grin'  ( grrrrr !! )

Well many thanx for the reply and help.

[Rog RJ]

You aren't the first to be caught out by the "DCC ready" description and you won't be the last!  

 

All it means is that the loco has been prepared READY for a decoder to be installed.

DCC fitted means it already has a decoder fitted.

[258rp]

So ?, What l should look for is "DCC Fitted" & not 'DCC Ready'.

Also, as l have your wisdom. is TTS compatible with DCC ?....& what is the diffrence, l cant find info on this. lv read what they both can do, but cant find if they are compatable.

lf you can point me in the right direction that would be of great help.

[Rog RJ]

A TTS decoder is a DCC decoder made by Hornby which is capable of producing sounds and should work with any DCC system, though there are reports of people having problems with non Hornby systems. It can be fitted in place of an ordinary decoder if there is room in the model for the decoder, which is slightly bigger than a Hornby R8249 decoder, and the associated speaker.  The R8249 decoder is the standard decoder which Hornby usually fit in DCC fitted locos.

[Chrissaf]

Well l never !!!

Why doesnt Hornby state that in some fashion, even if just a piece of paper inside the box. lv spent hours messing about with this...........

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Do you not remember when High Definition was about to come out for TV's in the UK. TV sets were sold as "HD Ready" but when HD was actually launched as a service none of the HD Ready TVs would show a HD picture as they didn't have a HD tuner inside them. All the 'HD Ready" logo meant on the TVs was that the screen was capable of displaying a 1080P resolution picture from a suitably fitted tuner (usually in the form of a 'set-top' box).

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'Ready' & 'Fitted' have always meant something different to each other.

[Fishmanoz]

258rp, for your future reference it is most unlikely that any problem will require you to uninstall and reinstall RM.  Once set up, it will continue to be ok under almost all circumstances.  That includes installing updates which go in over the top of your existing installation and don't need to be run as administrator if you have already set up that way.  In fact, updates will leave all of your settings unchanged.